FY_Recover_Data的另一个版本(内容略有差异）FY_Recover_Data.sql ，源码如下：
create or replace package FY_Recover_Data is
---------------------------------------------------------------------------
-- WWW.HelloDBA.COM ---
-- Created By: Fuyuncat ---
-- Created Date: 08/08/2012 ---
-- Email: Fuyuncat@gmail.com ---
-- Coyprigh (c), 2012, WWW.HelloDBA.COM All rights reserved. ---
-- Last Version: http://www.HelloDBA.com/download/FY_Recover_Data.zip ---
-- ---
-- Update Logs ---
-- 15/08/2012, Fuyuncat: ---
-- 1. Fixed Bug in Clean_Up_Ts (Not chage TS status correctly) ---
-- 2. Added Exception Handle when Restore Data ---
-- 3. Added Parameter in recover_table, ---
-- to balance Fault Tolerance and Performance ---
-- ---
-- 16/08/2012, Fuyuncat: ---
-- 1. Enhanced corrupted block processing, get rows as possilbe ---
-- ---
-- 17/08/2012, Fuyuncat: ---
-- 1. Ommit the LOB columns raised ORA-22922 exception ---
-- ---
-- 20/08/2012, Fuyuncat: ---
-- 1. Ommit the LOB columns via db link ---
-- ---
-- 22/08/2012, Fuyuncat: ---
-- 1. Updated logging and tracing interface ---
---------------------------------------------------------------------------
type r_cursor is REF CURSOR;
type o_fileprop is record (
file# number,
status$ number);
type t_fileprops is table of o_fileprop;
/************************************************************************
** Copy file
**
** srcdir: Directory of Source File;
** srcfile: Source File Name;
** dstdir: Directory of Destination File;
** dstfile: Destination File Name;
************************************************************************/
procedure copy_file(srcdir varchar2,
srcfile varchar2,
dstdir varchar2 default null,
dstfile varchar2 default null);
/************************************************************************
** Recover Table Data From Special Data File;
**
** oriobjid: Object Id of Table to be Recovered;
** recowner: Owner of Table to be used as recovering dummy table;
** rectable: Name of Table to be used as recovering dummy table;
** rstowner: Owner of Table to store the recovered data;
** rsttable: Name of Table to store the recovered data;
** srcdir: Directory of the Data File to be recovered;
** srcfile: Name of the Data File to be recovered;
** recdir: Directory of Data File that rectable is stored;
** recfile: Name of Data File that rectable is stored;
** copydir: Directory of Copy of Data File that rectable is stored;
** coryfile: Name of Copy of Data File that rectable is stored;
** blksz: Block size of the Tablespace Storing the Table to be recovered;
** selflink: database link refer to instance self connect to dba account;
************************************************************************/
procedure recover_table(oriobjid number,
recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2,
srcdir varchar2,
srcfile varchar2,
recdir varchar2,
recfile varchar2,
copydir varchar2,
copyfile varchar2,
blksz number default 8192,
fillblks number default 5,
selflink varchar2 default '',
endianess number default 1);
/************************************************************************
** Recover Table Data From Data Files of Targe Table;
**
** tgtowner: Owner of Target Table to be recovered;
** tgttable: Name of Target Table to be recovered;
** recowner: Owner of Table to be used as recovering dummy table;
** rectable: Name of Table to be used as recovering dummy table;
** rstowner: Owner of Table to store the recovered data;
** rsttable: Name of Table to store the recovered data;
** srcdir: Directory of the Data File to be recovered;
** srcfile: Name of the Data File to be recovered;
** recdir: Directory of Data File that rectable is stored;
** recfile: Name of Data File that rectable is stored;
** copydir: Directory of Copy of Data File that rectable is stored;
** coryfile: Name of Copy of Data File that rectable is stored;
** blksz: Block size of the Tablespace Storing the Table to be recovered;
** selflink: database link refer to instance self connect to dba account;
************************************************************************/
procedure recover_table(tgtowner varchar2,
tgttable varchar2,
recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2,
srcdir varchar2,
recdir varchar2,
recfile varchar2,
copydir varchar2,
copyfile varchar2,
blksz number default 8192,
fillblks number default 5,
selflink varchar2 default '');
/************************************************************************
** Prepare the data files to be use during recovering;
**
** tgtowner: Owner of Target Table to be recovered;
** tgttable: Name of Target Table to be recovered;
** datapath: Absolute path of Data Files;
** datadir: Directory to be created referring to datapath;
** rects: Tablespace to store the recovering dummy table;
** recfile: Name of Data File to store the recovering dummy table;
** rstts: Tablespace to store table storing the recovered data;
** rstfile: Name of Data File to store restoring table;
** blksz: Block size of the Tablespace Storing the Table to be recovered;
** rectsblks: block number of recovery tablespace
** rectsblks: block number of restore tablespace
************************************************************************/
procedure prepare_files(tgtowner varchar2,
tgttable varchar2,
datapath in varchar2,
datadir in out varchar2,
rects out varchar2,
recfile out varchar2,
rstts out varchar2,
rstfile out varchar2,
blksz out varchar2,
rectsblks number default 16,
rsttsblks number default 2560);
/************************************************************************
** Clean up existing Recover and Restore Tablespace. Drop tables in the tablespaces
**
** rects: Recover tablespace name
** rects: Restore tablespace name, default NULL, will not do cleaning up;
************************************************************************/
procedure clean_up_ts(rects varchar2,
rstts varchar2 default null);
/************************************************************************
** Fill Blocks of Recovering Table, to format the blocks;
**
** tgtowner: Owner of Target Table to be recovered;
** tgttable: Name of Target Table to be recovered;
** datadir: Directory to be created referring to datapath;
** rects: Tablespace to store the recovering dummy table;
** recfile: Name of Data File to store the recovering dummy table;
** rstts: Tablespace to store table storing the recovered data;
** blks: Number blocks in Initial Extent of the recovering dummy table;
** recowner: Owner of Table to be used as recovering dummy table;
** rstowner: Owner of Table to store the recovered data;
** rectable: Name of Table to be used as recovering dummy table;
** rsttable: Name of Table to store the recovered data;
** coryfile: Name of Copy of Data File that rectable is stored;
************************************************************************/
procedure fill_blocks(tgtowner varchar2,
tgttable varchar2,
datadir varchar2,
rects varchar2,
recfile varchar2,
rstts varchar2,
blks number default 8,
recowner varchar2 default user,
rstowner varchar2 default user,
rectab in out varchar2,
rsttab in out varchar2,
copyfile out varchar2);
/************************************************************************
** Testing recovering procedure, involved initializing tablespaces and data files
**
** tgtowner: Owner of Target Table to be recovered;
** tgttable: Name of Target Table to be recovered;
** datapath: Absolute path of Data Files;
** fbks: block number to be filled in recovery table;
************************************************************************/
procedure test_rec1( tow varchar2 default 'SYS',
ttb varchar2 default 'T_CHAIN',
fbks number default 1,
datapath varchar2 default 'D:\oracle\product\10.2.0\oradata\EDGAR\DATAFILE\');
/************************************************************************
** Testing recovering procedure, without initializing tablespaces and data files
**
** tgtowner: Owner of Target Table to be recovered;
** tgttable: Name of Target Table to be recovered;
** fbks: block number to be filled in recovery table;
************************************************************************/
procedure test_rec2( tow varchar2 default 'SYS',
ttb varchar2 default 'T_CHAIN',
fbks number default 1);
/************************************************************************
** Set Initial parameters
**
** tracing: trace the process for debug;
** logging: show logging information;
** repobjid: replace the data object id wiht the recover table data object id;
************************************************************************/
procedure init_set( tracing boolean default true,
logging boolean default true,
repobjid boolean default true);
end FY_Recover_Data;
/
create or replace package body FY_Recover_Data is
---------------------------------------------------------------------------
-- WWW.HelloDBA.COM ---
-- Created By: Fuyuncat ---
-- Created Date: 08/08/2012 ---
-- Email: Fuyuncat@gmail.com ---
-- Coyprigh (c), 2012, WWW.HelloDBA.COM All rights reserved. ---
-- Last Version: http://www.HelloDBA.com/download/FY_Recover_Data.zip ---
---------------------------------------------------------------------------
s_tracing boolean:= true;
s_logging boolean:= true;
s_repobjid boolean:= false;
procedure init_set (tracing boolean default true,
logging boolean default true,
repobjid boolean default true)
as
begin
s_tracing := tracing;
s_logging := logging;
s_repobjid := repobjid;
end;
procedure trace (msg varchar2)
as
begin
if s_tracing then
dbms_output.put_line(to_char(sysdate, 'HH24:MI:SS')||': '||msg);
end if;
end;
procedure log (msg varchar2)
as
begin
if s_logging then
dbms_output.put_line(to_char(sysdate, 'HH24:MI:SS')||': '||msg);
end if;
end;
function d2r (dig varchar2,
len number default 0)
return raw
is
begin
--trace('[d2r] hextoraw(lpad(trim(to_char('||dig||', ''XXXXXXXX'')),'||len||',''0''))');
return hextoraw(lpad(trim(to_char(dig, 'XXXXXXXX')),len,'0'));
end;
procedure copy_file(srcdir varchar2,
srcfile varchar2,
dstdir varchar2 default null,
dstfile varchar2 default null)
as
bfr utl_file.file_type;
bfw utl_file.file_type;
-- vrw raw(8192);
frw raw(8192);
bsz number := 8192;
--p_srcdir varchar2(255) := upper(srcdir);
--p_srcfile varchar2(255) := upper(srcfile);
--p_dstdir varchar2(255) := upper(dstdir);
--p_dstfile varchar2(255) := upper(dstfile);
p_srcdir varchar2(255) := srcdir;
p_srcfile varchar2(255) := srcfile;
p_dstdir varchar2(255) := dstdir;
p_dstfile varchar2(255) := dstfile;
begin
if dstdir is null then
p_dstdir := p_srcdir;
end if;
if p_dstfile is null then
p_dstfile := p_srcfile||'$';
end if;
trace('[copy_file] begin copy file: '||srcdir||'\'||srcfile||' => '||dstdir||'\'||dstfile);
bfr := utl_file.fopen(p_srcdir, p_srcfile, 'RB');
bfw := utl_file.fopen(p_dstdir, p_dstfile, 'WB');
while true loop
begin
utl_file.get_raw(bfr, frw, bsz);
exit when frw is null;
utl_file.put_raw(bfw, frw);
utl_file.fflush(bfw);
exception when others then
exit;
end;
end loop;
utl_file.fclose(bfw);
utl_file.fclose(bfr);
trace('[copy_file] completed.');
end;
procedure replace_segmeta_in_file(srcdir varchar2,
srcfile varchar2,
dstdir varchar2,
dstfile varchar2,
tgtobjid number,
newobjid number,
dtail raw,
addpos number,
addinfo raw,
blksz number default 8192,
endianess number default 1)
as
bfr utl_file.file_type;
bfw utl_file.file_type;
hsz number := 24;
objr raw(4);
objn number;
dhead raw(32);
dbody raw(32767);
nbody raw(32767);
p_srcdir varchar2(255) := srcdir;
p_srcfile varchar2(255) := srcfile;
p_dstdir varchar2(255) := dstdir;
p_dstfile varchar2(255) := dstfile;
begin
if p_dstdir is null then
p_dstdir := p_srcdir;
end if;
trace('[replace_objid_in_file] replace object id in '||srcdir||'\'||srcfile||' ['||tgtobjid||' => '||newobjid||']');
bfr := utl_file.fopen(p_srcdir, p_srcfile, 'RB');
bfw := utl_file.fopen(p_dstdir, p_dstfile, 'WB');
while true loop
begin
nbody := '';
utl_file.get_raw(bfr, dhead, hsz);
exit when dhead is null;
utl_file.get_raw(bfr, dbody, blksz-hsz);
--objr := hextoraw(substrb(rawtohex(dbody), 1, 8));
objr := utl_raw.substr(dbody, 1, 4);
if endianess > 0 then
objn := to_number(rawtohex(utl_raw.reverse(objr)), 'XXXXXXXX');
else
objn := to_number(rawtohex(objr), 'XXXXXXXX');
end if;
-- replace data object id with the recover object id
--if objn = tgtobjid and substrb(rawtohex(dhead), 1, 2) = '06' then
if objn = tgtobjid then
if addpos <= hsz then
--utl_file.put_raw(bfw, utl_raw.concat(utl_raw.substr(dhead, 1, addpos-1), addinfo, utl_raw.substr(dhead, addpos+utl_raw.length(addinfo))));
nbody := utl_raw.concat(nbody, utl_raw.substr(dhead, 1, addpos-1), addinfo, utl_raw.substr(dhead, addpos+utl_raw.length(addinfo)));
else
--utl_file.put_raw(bfw, dhead);
nbody := utl_raw.concat(nbody, dhead);
end if;
--utl_file.put_raw(bfw, utl_raw.concat(utl_raw.substr(dhead, 1, 8), addinfo, utl_raw.substr(dhead, 9+utl_raw.length(addinfo))));
--nbody := utl_raw.concat(nbody, utl_raw.substr(dhead, 1, 8), addinfo, utl_raw.substr(dhead, 9+utl_raw.length(addinfo)));
--trace('[replace_objid_in_file] old id in raw: '||rawtohex(objr));
if endianess > 0 then
--trace('[replace_objid_in_file] new id in raw: '||utl_raw.reverse(d2r(newobjid, 8)));
--utl_file.put_raw(bfw, utl_raw.reverse(d2r(newobjid, 8)));
nbody := utl_raw.concat(nbody, utl_raw.reverse(d2r(newobjid, 8)));
else
--trace('[replace_objid_in_file] new id in raw: '||(d2r(newobjid, 8)));
--utl_file.put_raw(bfw, d2r(newobjid, 8));
nbody := utl_raw.concat(nbody, d2r(newobjid, 8));
end if;
-- skip objid
if addpos > hsz+5 and addinfo is not null then
trace('[replace_objid_in_file] old body len: '||utl_raw.length(dbody)||' new = 4 + '||utl_raw.length(utl_raw.substr(dbody, 5, addpos-hsz-5))||' + '||utl_raw.length(addinfo)||' + '||utl_raw.length(utl_raw.substr(dbody, addpos-hsz-4+utl_raw.length(addinfo), blksz-(addpos-1)-utl_raw.length(dtail)-utl_raw.length(addinfo)))||' + 4');
--utl_file.put_raw(bfw, utl_raw.concat(utl_raw.substr(dbody, 5, addpos-hsz-5), addinfo, utl_raw.substr(dbody, addpos-hsz, blksz-(addpos-1)-utl_raw.length(dtail)-utl_raw.length(addinfo))));
nbody := utl_raw.concat(nbody, utl_raw.substr(dbody, 5, addpos-hsz-5), addinfo, utl_raw.substr(dbody, addpos-hsz-4+utl_raw.length(addinfo), blksz-(addpos-1)-utl_raw.length(dtail)-utl_raw.length(addinfo)));
--trace('[replace_objid_in_file] new body len: '||utl_raw.length(nbody));
elsif addpos = hsz+5 and addinfo is not null then
--utl_file.put_raw(bfw, utl_raw.concat(addinfo, utl_raw.substr(dbody, addpos-hsz, blksz-(addpos-1)-utl_raw.length(dtail)-utl_raw.length(addinfo))));
nbody := utl_raw.concat(nbody, addinfo, utl_raw.substr(dbody, addpos-hsz, blksz-(addpos-1)-utl_raw.length(dtail)-utl_raw.length(addinfo)));
else
--utl_file.put_raw(bfw, utl_raw.substr(dbody, 5, blksz-hsz-4-utl_raw.length(dtail)));
nbody := utl_raw.concat(nbody, utl_raw.substr(dbody, 5, blksz-hsz-4-utl_raw.length(dtail)));
end if;
--trace('[replace_objid_in_file] tail in raw: '||dtail||'('||utl_raw.length(dtail)||')');
--utl_file.put_raw(bfw, dtail);
nbody := utl_raw.concat(nbody, dtail);
trace('[replace_objid_in_file] new body length: '||utl_raw.length(nbody));
else
--utl_file.put_raw(bfw, dhead);
--utl_file.put_raw(bfw, dbody);
nbody := utl_raw.concat(nbody, dhead, dbody);
end if;
--if utl_raw.length(nbody) != blksz then
-- trace('[replace_objid_in_file] new body length: '||utl_raw.length(nbody));
--end if;
utl_file.put_raw(bfw, nbody);
utl_file.fflush(bfw);
exception
when no_data_found then
exit;
when others then
trace('[replace_objid_in_file] '||SQLERRM);
trace('[replace_objid_in_file] '||dbms_utility.format_error_backtrace);
exit;
end;
end loop;
utl_file.fclose(bfw);
utl_file.fclose(bfr);
trace('[replace_objid_in_file] completed.');
end;
function gen_table_name(tgttable varchar2,
plus varchar2 default '',
genowner varchar2 default user)
return varchar2
as
gentab varchar2(30);
begin
select upper(tgttable||plus||surfix) into gentab from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_tables where owner = genowner and table_name = upper(tgttable||plus||surfix)) order by surfix nulls first) where rownum<=1;
return gentab;
end;
function gen_file_name( tgtfile varchar2,
plus varchar2 default '')
return varchar2
as
genfile varchar2(30);
begin
select tgtfile||plus||surfix||'.DAT' into genfile from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_data_files where file_name like '%\'||tgtfile||plus||surfix||'.DAT') order by surfix nulls first) where rownum<=1;
return genfile;
end;
function gen_ts_name( tgtts varchar2,
plus varchar2 default '')
return varchar2
as
gents varchar2(30);
begin
select tgtts||plus||surfix into gents from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_tablespaces where tablespace_name = tgtts||plus||surfix) order by surfix nulls first) where rownum<=1;
return gents;
end;
function get_cols_no_lob( recowner varchar2,
rectab varchar2)
return varchar2
as
cols varchar2(32767);
colno number := 0;
begin
cols := '';
for col_rec in (select column_name, data_type, nullable from dba_tab_cols where owner = recowner and table_name = rectab) loop
if col_rec.data_type NOT LIKE '%LOB' then
if colno > 0 then
cols := cols||',';
end if;
cols := cols||col_rec.column_name;
colno := colno + 1;
end if;
end loop;
return cols;
end;
function restore_table_row_no_lob(recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2,
cols varchar2,
rid rowid)
return number
as
recnum number := 0;
begin
begin
execute immediate 'insert /*+*/ into '||rstowner||'.'||rsttab||'('||cols||') select '||cols||' from '||recowner||'.'||rectab||' where rowid = :rid' using rid;
recnum := recnum + SQL%ROWCOUNT;
exception when others then
trace('[restore_table_row_no_lob] '||SQLERRM);
trace('[restore_table_row_no_lob] '||dbms_utility.format_error_backtrace);
null;
end;
return recnum;
end;
function restore_table_in_rows( recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2)
return number
as
recnum number := 0;
blk_cur r_cursor;
objid number;
fid number;
blkno number;
rnum number;
gnum number;
cols varchar2(32767);
begin
begin
--trace('[restore_table_in_rows] '||'select dbms_rowid.rowid_object(rowid) objid, dbms_rowid.rowid_relative_fno(rowid) fid, dbms_rowid.rowid_block_number(rowid) blkno, count(1) rnum from '||recowner||'.'||rectab||' group by dbms_rowid.rowid_object(rowid), dbms_rowid.rowid_relative_fno(rowid), dbms_rowid.rowid_block_number(rowid)');
open blk_cur for 'select dbms_rowid.rowid_object(rowid) objid, dbms_rowid.rowid_relative_fno(rowid) fid, dbms_rowid.rowid_block_number(rowid) blkno, count(1) rnum from '||recowner||'.'||rectab||' group by dbms_rowid.rowid_object(rowid), dbms_rowid.rowid_relative_fno(rowid), dbms_rowid.rowid_block_number(rowid)';
loop
fetch blk_cur into objid, fid, blkno, rnum;
exit when blk_cur%NOTFOUND;
trace('[restore_table_in_rows] expected rows: '||rnum);
gnum := 0;
--trace('[restore_table_in_rows] block: '||blkno);
for i in 1..rnum loop
begin
--trace('[restore_table_in_rows] row: '||i);
--execute immediate 'insert /*+*/into '||rstowner||'.'||rsttab||' select * from '||recowner||'.'||rectab||' where rowid = dbms_rowid.rowid_create(1, :objid, :fid, :blkno, :i)' using objid, fid, blkno, i-1;
execute immediate 'insert /*+*/into '||rstowner||'.'||rsttab||' select * from '||recowner||'.'||rectab||' where dbms_rowid.rowid_relative_fno(ROWID)=:fid and dbms_rowid.rowid_block_number(ROWID)=:blkno and dbms_rowid.rowid_row_number(ROWID)=:i' using fid, blkno, i-1;
recnum := recnum + SQL%ROWCOUNT;
gnum := gnum + SQL%ROWCOUNT;
exception when others then
if sqlcode = -22922 then
-- trace('[restore_table_in_rows] Warning: Unrecoverable Lob found!');
if cols is null then
cols := get_cols_no_lob(recowner, rectab);
end if;
recnum := recnum + restore_table_row_no_lob(recowner, rectab, rstowner, rsttab, cols, dbms_rowid.rowid_create(1, objid, fid, blkno, i-1));
else
trace('[restore_table_in_rows] '||SQLERRM);
trace('[restore_table_in_rows] '||dbms_utility.format_error_backtrace);
end if;
null;
end;
end loop;
if gnum != rnum then
log('Warning: '||(rnum-gnum)||' records lost!');
end if;
end loop;
exception when others then
trace('[restore_table_in_rows] '||sqlerrm);
trace('[restore_table_in_rows] '||dbms_utility.format_error_backtrace);
null;
end;
return recnum;
end;
function restore_table_in_rows_remote(recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2,
dblink varchar2)
return number
as
recnum number := 0;
blk_cur r_cursor;
objid number;
fid number;
blkno number;
rnum number;
cols varchar2(32767);
begin
begin
--rollback;
open blk_cur for 'select dbms_rowid.rowid_object(rowid) objid, dbms_rowid.rowid_relative_fno(rowid) fid, dbms_rowid.rowid_block_number(rowid) blkno, count(1) rnum from '||recowner||'.'||rectab||' group by dbms_rowid.rowid_object(rowid), dbms_rowid.rowid_relative_fno(rowid), dbms_rowid.rowid_block_number(rowid)';
loop
fetch blk_cur into objid, fid, blkno, rnum;
exit when blk_cur%NOTFOUND;
trace('[restore_table_in_rows_remote] expected rows: '||rnum);
for i in 1..rnum loop
begin
--execute immediate 'insert /*+no_append*/into '||rstowner||'.'||rsttab||' select * from '||recowner||'.'||rectab||'@'||dblink||' where rowid = dbms_rowid.rowid_create(1, :objid, :fid, :blkno, :i)' using objid, fid, blkno, i-1;
execute immediate 'insert /*+*/into '||rstowner||'.'||rsttab||' select * from '||recowner||'.'||rectab||'@'||dblink||' where dbms_rowid.rowid_relative_fno(ROWID)=:fid and dbms_rowid.rowid_block_number(ROWID)=:blkno and dbms_rowid.rowid_row_number(ROWID)=:i' using fid, blkno, i-1;
recnum := recnum + SQL%ROWCOUNT;
--commit;
exception when others then
if sqlcode = -22922 then
if cols is null then
cols := get_cols_no_lob(recowner, rectab);
end if;
recnum := recnum + restore_table_row_no_lob(recowner, rectab, rstowner, rsttab, cols, dbms_rowid.rowid_create(1, objid, fid, blkno, i-1));
else
trace('[restore_table_in_rows_remote] '||SQLERRM);
trace('[restore_table_in_rows_remote] '||dbms_utility.format_error_backtrace);
--commit;
end if;
null;
end;
end loop;
end loop;
end;
return recnum;
end;
function restore_table_ctas(recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2)
return number
as
recnum number := 0;
tmptab varchar2(30);
begin
tmptab := gen_table_name(rsttab, '', rstowner);
begin
execute immediate 'create table '||rstowner||'.'||tmptab||' as select /*+full(t)*/* from '||recowner||'.'||rectab||' t';
execute immediate 'insert /*+append*/ into '||rstowner||'.'||rsttab||' select /*+full(t)*/* from '||recowner||'.'||tmptab||' t';
recnum := SQL%ROWCOUNT;
execute immediate 'drop table '||rstowner||'.'||tmptab;
exception when others then
--trace('[restore_table_ctas] '||SQLERRM);
--trace('[restore_table_ctas] '||dbms_utility.format_error_backtrace);
null;
end;
return recnum;
end;
function restore_table_no_lob(recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2)
return number
as
recnum number := 0;
cols varchar2(32767);
begin
cols := get_cols_no_lob(recowner, rectab);
begin
--execute immediate 'alter system flush buffer_cache';
execute immediate 'insert /*+append*/ into '||rstowner||'.'||rsttab||'('||cols||') select /*+full(t)*/'||cols||' from '||recowner||'.'||rectab||' t';
recnum := recnum + SQL%ROWCOUNT;
exception when others then
--raise;
if sqlcode = -22922 then
null;
else
recnum := recnum + restore_table_in_rows(recowner, rectab, rstowner, rsttab);
end if;
end;
trace('[restore_table_no_lob] '||recnum||' records recovered');
return recnum;
end;
function restore_table( recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2,
selflink varchar2 default '')
return number
as
recnum number := 0;
expnum number := 0;
begin
begin
trace('[restore_table] Trying to restore data to '||rstowner||'.'||rsttab);
execute immediate 'alter system flush buffer_cache';
if s_tracing then
execute immediate 'select /*+full(t)*/count(*) from '||recowner||'.'||rectab||' t' into expnum;
trace('[restore_table] Expected Records in this round: '||expnum);
end if;
execute immediate 'insert /*+append*/ into '||rstowner||'.'||rsttab||' select /*+full(t)*/* from '||recowner||'.'||rectab||' t';
recnum := recnum + SQL%ROWCOUNT;
if s_tracing and expnum != SQL%ROWCOUNT then
trace('[restore_table] '||(expnum-SQL%ROWCOUNT)||' records lost!');
return -1; -- for test
end if;
exception when others then
--raise;
if sqlcode = -22922 then
log('Warning: Unrecoverable Lob found!');
recnum := recnum + restore_table_in_rows_remote(recowner, rectab, rstowner, rsttab, selflink);
--recnum := recnum + restore_table_no_lob(recowner, rectab, rstowner, rsttab);
else
trace(SQLERRM);
trace('[restore_table] '||dbms_utility.format_error_backtrace);
--recnum := recnum + restore_table_in_rows_remote(recowner, rectab, rstowner, rsttab, selflink);
--return -1; -- test
recnum := recnum + restore_table_in_rows(recowner, rectab, rstowner, rsttab);
end if;
end;
execute immediate 'alter system flush buffer_cache';
trace('[restore_table] '||recnum||' records recovered');
return recnum;
end;
procedure recover_table(oriobjid number,
recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2,
srcdir varchar2,
srcfile varchar2,
recdir varchar2,
recfile varchar2,
copydir varchar2,
copyfile varchar2,
blksz number default 8192,
fillblks number default 5,
selflink varchar2 default '',
endianess number default 1)
as
-- blk blob;
--vrw raw(32767);
frw raw(32767);
tsz number := 4;
hsz number := 28;
objr raw(4);
objn number;
dtail raw(4);
dhead raw(32);
dbody raw(32767);
--bfr bfile;
bfo utl_file.file_type;
bfr utl_file.file_type;
bfw utl_file.file_type;
fillednum number := 0;
dummyheader number;
dummyblks number;
blkstofill number := fillblks;
recnum number := 0;
rstnum number := 0;
i number := 0;
j number := 0;
truncblks number := 0;
begin
execute immediate 'truncate table '||rstowner||'.'||rsttab;
execute immediate 'alter system set db_block_checking=false scope=memory';
execute immediate 'alter system set db_block_checksum=false scope=memory';
execute immediate 'alter system set "_db_block_check_objtyp"=false scope=memory';
execute immediate 'alter session set events ''10231 trace name context forever, level 10''';
execute immediate 'alter session set events ''10233 trace name context forever, level 10''';
select header_block+1, blocks-3 into dummyheader, dummyblks from dba_segments where owner = recowner and segment_name = rectab;
if blkstofill > dummyblks then
blkstofill := dummyblks;
end if;
bfo := utl_file.fopen(srcdir, srcfile, 'RB');
--utl_file.get_raw(bfo, dbody, blksz-hsz-tsz);
--utl_file.get_raw(bfo, dtail, tsz);
bfr := utl_file.fopen(copydir, copyfile, 'RB');
bfw := utl_file.fopen(recdir, recfile, 'WB');
-- reach to the transaction blocks to be filled
i := 0;
while true loop
begin
utl_file.get_raw(bfr, frw, blksz);
utl_file.put_raw(bfw, frw);
i := i+1;
exit when i=dummyheader+fillednum;
exception when others then
--raise;
--trace('[recover_table] block NO.: '||i);
exit;
end;
end loop;
-- go through the data file of truncated table
while true loop
begin
--trace('[recover_table] '||j);
j := j+1;
--objr := substrb(rawtohex(dhead), 49, 8);
utl_file.get_raw(bfo, dhead, hsz);
if hsz <= 24 then
utl_file.get_raw(bfo, dbody, blksz-tsz-hsz);
--objr := substrb(rawtohex(dbody), 49-hsz*2, 8);
objr := utl_raw.substr(dbody, 25-hsz, 4);
else
--objr := substrb(rawtohex(dhead), 49, 8);
objr := utl_raw.substr(dhead, 25, 4);
end if;
if endianess > 0 then
--objn := to_number(utl_raw.reverse(hextoraw(objr)), 'XXXXXXXX');
objn := to_number(rawtohex(utl_raw.reverse(objr)), 'XXXXXXXX');
else
--objn := to_number(hextoraw(objr), 'XXXXXXXX');
objn := to_number(rawtohex(objr), 'XXXXXXXX');
end if;
-- check if block belongs to truncated table
if objn != oriobjid or substrb(rawtohex(dhead), 1, 2) != '06' then
if hsz > 24 then
utl_file.get_raw(bfo, dbody, blksz-hsz);
else
utl_file.get_raw(bfo, dtail, tsz);
end if;
else
--trace('[recover_table] Find it.');
truncblks := truncblks + 1;
if hsz > 24 then
utl_file.get_raw(bfo, dbody, blksz-hsz-tsz);
end if;
utl_file.get_raw(bfo, dtail, tsz);
if not utl_file.is_open(bfr) then
bfr := utl_file.fopen(copydir, copyfile, 'RB');
end if;
if not utl_file.is_open(bfw) then
bfw := utl_file.fopen(recdir, recfile, 'WB');
end if;
-- filling the trans block
utl_file.get_raw(bfr, dhead, hsz);
utl_file.put_raw(bfw, dhead); -- put original header
utl_file.put_raw(bfw, dbody); -- replace body
utl_file.get_raw(bfr, dbody, blksz-hsz-tsz); -- forward pointer in original file copy
utl_file.get_raw(bfr, dtail, tsz); -- get original tail
utl_file.put_raw(bfw, dtail); -- put original tail
fillednum := fillednum+1;
i := i+1;
-- no trans data block left, copy recovered data to backup table and fill the left blocks
if fillednum >= blkstofill then
--if fillednum+blkstofill-1 >= dummyblks then
begin
while true loop
begin
utl_file.get_raw(bfr, frw, blksz);
utl_file.put_raw(bfw, frw);
i := i+1;
exception when others then
if utl_file.is_open(bfr) then
utl_file.fclose(bfr);
end if;
if utl_file.is_open(bfw) then
utl_file.fclose(bfw);
end if;
exit;
end;
end loop;
rstnum := restore_table(recowner, rectab, rstowner, rsttab, selflink);
-- for test
exit when rstnum < 0;
recnum := recnum+rstnum;
fillednum := 0;
commit;
bfr := utl_file.fopen(copydir, copyfile, 'RB');
bfw := utl_file.fopen(recdir, recfile, 'WB');
-- go to the transaction blocks again
i := 0;
while true loop
begin
utl_file.get_raw(bfr, frw, blksz);
utl_file.put_raw(bfw, frw);
i := i+1;
exit when i=dummyheader+fillednum;
exception when others then
--raise;
--trace('[recover_table] block NO.: '||i);
exit;
end;
end loop;
utl_file.fflush(bfw);
exception when others then
trace('[recover_table 2-1] '||sqlerrm);
trace('[recover_table 2-1] '||dbms_utility.format_error_backtrace);
null;
end;
end if;
end if;
exception
when no_data_found then
exit;
when others then
trace('[recover_table 2-2] '||sqlerrm);
trace('[recover_table 2-2] '||dbms_utility.format_error_backtrace);
exit;
end;
end loop;
-- last blocks not full filled dummy table
--if fillednum+blkstofill-1 < dummyblks then
if fillednum < blkstofill and rstnum>=0 then
begin
while true loop
begin
utl_file.get_raw(bfr, frw, blksz);
utl_file.put_raw(bfw, frw);
i := i+1;
exception when others then
if utl_file.is_open(bfr) then
utl_file.fclose(bfr);
end if;
if utl_file.is_open(bfw) then
utl_file.fclose(bfw);
end if;
exit;
end;
end loop;
recnum := recnum+restore_table(recowner, rectab, rstowner, rsttab, selflink);
--fillednum := 0;
commit;
end;
end if;
if utl_file.is_open(bfr) then
utl_file.fclose(bfr);
end if;
if utl_file.is_open(bfw) then
utl_file.fclose(bfw);
end if;
if utl_file.is_open(bfo) then
utl_file.fclose(bfo);
end if;
utl_file.fclose_all();
execute immediate 'alter session set events ''10233 trace name context off''';
execute immediate 'alter session set events ''10231 trace name context off''';
execute immediate 'alter system set "_db_block_check_objtyp"=true scope=memory';
execute immediate 'alter system set db_block_checksum=true scope=memory';
execute immediate 'alter system set db_block_checking=true scope=memory';
log(truncblks||' truncated data blocks found. ');
log(recnum||' records recovered in backup table '||rstowner||'.'||rsttab);
end;
procedure get_seg_meta( segowner varchar2,
segname varchar2,
srcdir varchar2,
dtail out raw,
addinfo out raw,
blksz number default 8192)
as
frw raw(32767);
firstblk number;
hdfile varchar2(255);
bfo utl_file.file_type;
i number := 0;
begin
select header_block+1 into firstblk from dba_segments where owner = segowner and segment_name = segname;
select substr(file_name,decode(instr(d.file_name, '\', -1), 0, instr(file_name, '/', -1), instr(file_name, '\', -1))+1) into hdfile from dba_data_files d, dba_segments s where s.header_file = d.file_id and s.owner = segowner and s.segment_name = segname;
bfo := utl_file.fopen(srcdir, hdfile, 'RB');
-- reach to the truncated data blocks
i := 0;
while true loop
begin
utl_file.get_raw(bfo, frw, blksz);
i := i+1;
exit when i = firstblk;
exception when others then
exit;
end;
end loop;
utl_file.get_raw(bfo, frw, blksz);
dtail := utl_raw.substr(frw, blksz-3, 4);
addinfo := utl_raw.substr(frw, 39, 2);
utl_file.fclose(bfo);
end;
function get_seg_data_id( segowner varchar2,
segname varchar2,
srcdir varchar2,
blksz number default 8192,
endianess number default 1)
return number
as
frw raw(32767);
hsz number := 28;
firstblk number;
hdfile varchar2(255);
bfo utl_file.file_type;
i number := 0;
objr raw(4);
objn number;
begin
select header_block+1 into firstblk from dba_segments where owner = segowner and segment_name = segname;
select substr(file_name,decode(instr(d.file_name, '\', -1), 0, instr(file_name, '/', -1), instr(file_name, '\', -1))+1) into hdfile from dba_data_files d, dba_segments s where s.header_file = d.file_id and s.owner = segowner and s.segment_name = segname;
bfo := utl_file.fopen(srcdir, hdfile, 'RB');
-- reach to the truncated data blocks
i := 0;
while true loop
begin
utl_file.get_raw(bfo, frw, blksz);
i := i+1;
exit when i = firstblk;
exception when others then
exit;
end;
end loop;
utl_file.get_raw(bfo, frw, hsz);
objr := utl_raw.substr(frw, 25, 4);
if endianess > 0 then
objn := to_number(rawtohex(utl_raw.reverse(objr)), 'XXXXXXXX');
else
objn := to_number(rawtohex(objr), 'XXXXXXXX');
end if;
utl_file.fclose(bfo);
return objn;
end;
procedure recover_table(tgtowner varchar2,
tgttable varchar2,
recowner varchar2,
rectab varchar2,
rstowner varchar2,
rsttab varchar2,
srcdir varchar2,
recdir varchar2,
recfile varchar2,
copydir varchar2,
copyfile varchar2,
blksz number default 8192,
fillblks number default 5,
selflink varchar2 default '')
as
tgtobjid number;
recobjid number;
endianess number;
tmpcopyf varchar2(256);
tsname varchar2(30);
readprop varchar2(30);
dtail raw(4);
addinfo raw(32);
begin
select instr(platform_name, 'Windows') into endianess from v_$database where rownum<=1;
select data_object_id into recobjid from dba_objects where owner = recowner and object_name = rectab and object_type='TABLE' and rownum<=1;
log('begin to recover table '||tgtowner||'.'||tgttable);
tgtobjid := get_seg_data_id(tgtowner, tgttable, srcdir, blksz, endianess);
if s_repobjid then
get_seg_meta(recowner, rectab, srcdir, dtail, addinfo, blksz);
select tablespace_name into tsname from dba_tables where owner = tgtowner and table_name = tgttable and rownum<=1;
select STATUS into readprop from dba_tablespaces where tablespace_name = tsname;
if readprop != 'READ ONLY' then
execute immediate 'alter tablespace '||tsname||' read only';
execute immediate 'alter system flush buffer_cache';
end if;
for file_rec in (select substr(file_name,decode(instr(d.file_name, '\', -1), 0, instr(file_name, '/', -1), instr(file_name, '\', -1))+1) as filename from dba_data_files d, dba_tables t where d.tablespace_name = t.tablespace_name and t.owner = tgtowner and t.table_name = tgttable) loop
begin
tmpcopyf := gen_file_name(file_rec.filename, '$');
copy_file(srcdir, file_rec.filename, srcdir, tmpcopyf);
--replace_segmeta_in_file(srcdir, tmpcopyf, srcdir, file_rec.filename, tgtobjid, recobjid, dtail, 39, addinfo, blksz, endianess);
replace_segmeta_in_file(srcdir, tmpcopyf, srcdir, file_rec.filename, tgtobjid, recobjid, dtail, 39, '', blksz, endianess);
recover_table(recobjid, recowner, rectab, rstowner, rsttab, srcdir, file_rec.filename, recdir, recfile, copydir, copyfile, blksz, fillblks, selflink, endianess);
--recover_table(tgtobjid, recowner, rectab, rstowner, rsttab, srcdir, file_rec.filename, recdir, recfile, copydir, copyfile, blksz, fillblks, selflink, endianess);
copy_file(srcdir, tmpcopyf, srcdir, file_rec.filename);
utl_file.fremove(srcdir, tmpcopyf);
trace('[recover_table 1] '||tmpcopyf||' removed.');
exception when others then
trace('[recover_table 1] '||sqlerrm);
trace('[recover_table 1] '||dbms_utility.format_error_backtrace);
end;
end loop;
if readprop != 'READ ONLY' then
execute immediate 'alter tablespace '||tsname||' read write';
end if;
else
for file_rec in (select substr(file_name,decode(instr(d.file_name, '\', -1), 0, instr(file_name, '/', -1), instr(file_name, '\', -1))+1) as filename from dba_data_files d, dba_tables t where d.tablespace_name = t.tablespace_name and t.owner = tgtowner and t.table_name = tgttable) loop
begin
recover_table(tgtobjid, recowner, rectab, rstowner, rsttab, srcdir, file_rec.filename, recdir, recfile, copydir, copyfile, blksz, fillblks, selflink, endianess);
exception when others then
trace('[recover_table 1] '||sqlerrm);
trace('[recover_table 1] '||dbms_utility.format_error_backtrace);
end;
end loop;
end if;
log('Recovery completed.');
end;
procedure prepare_files(tgtowner varchar2,
tgttable varchar2,
datapath varchar2,
datadir in out varchar2,
rects out varchar2,
recfile out varchar2,
rstts out varchar2,
rstfile out varchar2,
blksz out varchar2,
rectsblks number default 16,
rsttsblks number default 2560)
as
ext_mgmt varchar2(30);
ss_mgmt varchar2(30);
begin
select block_size, extent_management, segment_space_management into blksz, ext_mgmt, ss_mgmt from dba_tablespaces ts, dba_tables t where t.tablespace_name = ts.tablespace_name and t.owner = upper(tgtowner) and t.table_name = upper(tgttable);
select datadir||surfix into datadir from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_directories where directory_name = datadir||surfix) order by surfix nulls first) where rownum<=1;
log('Directory Name: '||datadir);
execute immediate 'create directory '||datadir||' as '''||datapath||'''';
--select 'FY_REC_DATA'||surfix into rects from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_tablespaces where tablespace_name = 'FY_REC_DATA'||surfix) order by surfix nulls first) where rownum<=1;
--select 'FY_REC_DATA'||surfix||'.DAT' into recfile from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_data_files where file_name like '%\FY_REC_DATA'||surfix||'.DAT') order by surfix nulls first) where rownum<=1;
rects := gen_ts_name('FY_REC_DATA','');
recfile := gen_file_name('FY_REC_DATA','');
log('Recover Tablespace: '||rects||'; Data File: '||recfile);
execute immediate 'create tablespace '||rects||' datafile '''||rtrim(datapath, '\')||'\'||recfile||''' size '||to_char(blksz*rectsblks/1024)||'K autoextend off extent management '||ext_mgmt||' SEGMENT SPACE MANAGEMENT '||ss_mgmt;
select 'FY_RST_DATA'||surfix into rstts from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_tablespaces where tablespace_name = 'FY_REST_DATA'||surfix) order by surfix nulls first) where rownum<=1;
--select 'FY_RST_DATA'||surfix||'.DAT' into rstfile from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_data_files where file_name like '%\FY_REST_DATA'||surfix||'.DAT') order by surfix nulls first) where rownum<=1;
rstts := gen_ts_name('FY_RST_DATA','');
rstfile := gen_file_name('FY_RST_DATA','');
log('Restore Tablespace: '||rstts||'; Data File: '||rstfile);
execute immediate 'create tablespace '||rstts||' datafile '''||rtrim(datapath, '\')||'\'||rstfile||''' size '||to_char(blksz*rsttsblks/1024)||'K autoextend on extent management '||ext_mgmt||' SEGMENT SPACE MANAGEMENT '||ss_mgmt;
end;
procedure clean_up_ts(rects varchar2,
rstts varchar2 default null)
as
readprop varchar2(30);
begin
select STATUS into readprop from dba_tablespaces where tablespace_name = rects;
if readprop = 'READ ONLY' then
execute immediate 'alter tablespace '||rects||' read write';
end if;
for tab_rec in (select owner, table_name from dba_tables where tablespace_name = rects) loop
execute immediate 'drop table '||tab_rec.owner||'.'||tab_rec.table_name;
end loop;
if rstts is not null then
for tab_rec in (select owner, table_name from dba_tables where tablespace_name = rstts) loop
execute immediate 'drop table '||tab_rec.owner||'.'||tab_rec.table_name;
end loop;
end if;
end;
procedure fill_blocks(tgtowner varchar2,
tgttable varchar2,
datadir varchar2,
rects varchar2,
recfile varchar2,
rstts varchar2,
blks number default 8,
recowner varchar2 default user,
rstowner varchar2 default user,
rectab in out varchar2,
rsttab in out varchar2,
copyfile out varchar2)
as
blksz number;
blkno number;
cols varchar2(32767);
vals varchar2(32767);
colno number := 0;
begin
if rectab is null then
select block_size into blksz from dba_tablespaces ts, dba_tables t where t.tablespace_name = ts.tablespace_name and t.owner = upper(tgtowner) and t.table_name = upper(tgttable);
-- select upper(tgttable||'$'||surfix) into rectab from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_tables where owner = recowner and table_name = upper(tgttable||'$'||surfix)) order by surfix nulls first) where rownum<=1;
rectab := gen_table_name(tgttable, '$', recowner);
log('Recover Table: '||recowner||'.'||rectab);
--trace('[fill_blocks] create table '||recowner||'.'||rectab||' tablespace '||rects||' storage(initial '||to_char(blks*blksz/1024)||'K) as select * from '||tgtowner||'.'||tgttable||' where 1=2');
execute immediate 'create table '||recowner||'.'||rectab||' tablespace '||rects||' storage(initial '||to_char(blks*blksz/1024)||'K) as select * from '||tgtowner||'.'||tgttable||' where 1=2';
else
--execute immediate 'truncate table '||recowner||'.'||rectab;
execute immediate 'delete from '||recowner||'.'||rectab;
commit;
end if;
cols := '';
vals := '';
for col_rec in (select column_name, data_type, nullable from dba_tab_cols where owner = recowner and table_name = rectab) loop
if col_rec.nullable = 'N' then
execute immediate 'alter table '||recowner||'.'||rectab||' modify '||col_rec.column_name||' null';
end if;
if colno < 6 then
if col_rec.data_type like '%CHAR%' or col_rec.data_type like '%RAW%' then
if colno > 0 then
cols := cols||',';
vals := vals||',';
end if;
cols := cols||col_rec.column_name;
vals := vals||'''A''';
colno := colno + 1;
elsif col_rec.data_type like '%NUMBER%' or col_rec.data_type = 'FLOAT' then
if colno > 0 then
cols := cols||',';
vals := vals||',';
end if;
cols := cols||col_rec.column_name;
vals := vals||'0';
colno := colno + 1;
elsif col_rec.data_type LIKE '%TIMESTAMP%' or col_rec.data_type = 'DATE' then
if colno > 0 then
cols := cols||',';
vals := vals||',';
end if;
cols := cols||col_rec.column_name;
vals := vals||'sysdate';
colno := colno + 1;
end if;
end if;
end loop;
--select upper(tgttable||'$$'||surfix) into rsttab from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_tables where owner = rstowner and table_name = upper(tgttable||'$$'||surfix)) order by surfix nulls first) where rownum<=1;
if rsttab is null then
rsttab := gen_table_name(tgttable, '$$', rstowner);
log('Restore Table: '||rstowner||'.'||rsttab);
execute immediate 'create table '||rstowner||'.'||rsttab||' tablespace '||rstts||' as select * from '||recowner||'.'||rectab||' where 1=2';
else
execute immediate 'truncate table '||rstowner||'.'||rsttab;
end if;
--trace('[fill_blocks] insert into '||recowner||'.'||rectab||'('||cols||') values ('||vals||')');
while true loop
execute immediate 'insert into '||recowner||'.'||rectab||'('||cols||') values ('||vals||')';
execute immediate 'select count(unique(dbms_rowid.rowid_block_number( rowid ))) from '||recowner||'.'||rectab into blkno ;
exit when blkno >= blks-3;
end loop;
commit;
execute immediate 'alter system flush buffer_cache';
execute immediate 'delete from '||recowner||'.'||rectab;
commit;
execute immediate 'alter system flush buffer_cache';
trace('[fill_blocks] Data Blocks formatted.');
execute immediate 'alter tablespace '||rects||' read only';
select 'FY_REC_DATA_COPY'||surfix||'.DAT' into copyfile from (select surfix from (select null surfix from dual union all select level surfix from dual connect by level <= 255) where not exists (select 1 from dba_data_files where file_name like '%FY_REC_DATA_COPY'||surfix||'.DAT') order by surfix nulls first) where rownum<=1;
copy_file(datadir, recfile, datadir, copyfile);
log('Copy file of Recover Tablespace: '||copyfile);
end;
procedure test_rec1( tow varchar2 default 'SYS',
ttb varchar2 default 'T_CHAIN',
fbks number default 1,
datapath varchar2 default 'D:\oracle\product\10.2.0\oradata\EDGAR\DATAFILE\')
as
tgtowner varchar2(30):= upper(tow);
tgttable varchar2(30):= upper(ttb);
datadir varchar2(30);
rects varchar2(30);
recfile varchar2(30);
rstts varchar2(30);
rstfile varchar2(30);
blksz number;
rectab varchar2(30);
rsttab varchar2(30);
copyfile varchar2(30);
begin
datadir := 'FY_DATA_DIR';
prepare_files(tgtowner, tgttable, datapath, datadir, rects, recfile, rstts, rstfile, blksz);
rects := 'FY_REC_DATA';
rstts := 'FY_RST_DATA';
recfile := 'FY_REC_DATA.DAT';
fill_blocks(tgtowner, tgttable, datadir, rects, recfile, rstts, 8, tgtowner, tgtowner, rectab, rsttab, copyfile);
recover_table(tgtowner, tgttable, tgtowner, rectab, tgtowner, rsttab, datadir, datadir, recfile, datadir, copyfile, blksz, fbks, 'myself');
end;
procedure test_rec2( tow varchar2 default 'SYS',
ttb varchar2 default 'T_CHAIN',
fbks number default 1)
as
tgtowner varchar2(30):= upper(tow);
tgttable varchar2(30):= upper(ttb);
datadir varchar2(30);
rects varchar2(30);
recfile varchar2(30);
rstts varchar2(30);
blksz number;
rectab varchar2(30);
rsttab varchar2(30);
copyfile varchar2(30);
begin
datadir := 'FY_DATA_DIR';
rects := 'FY_REC_DATA';
rstts := 'FY_RST_DATA';
recfile := 'FY_REC_DATA.DAT';
clean_up_ts(rects, rstts);
select block_size into blksz from dba_tablespaces ts, dba_tables t where ts.tablespace_name = t.tablespace_name and t.owner = tgtowner and t.table_name = tgttable;
fill_blocks(tgtowner, tgttable, datadir, rects, recfile, rstts, 8, tgtowner, tgtowner, rectab, rsttab, copyfile);
recover_table(tgtowner, tgttable, tgtowner, rectab, tgtowner, rsttab, datadir, datadir, recfile, datadir, copyfile, blksz, fbks, 'myself');
end;
begin
null;
end FY_Recover_Data;
/
操作过程
步骤1：在linux中的oracle用户下解压FY_Recover_Data.zip包
$ unzip FY_Recover_Data.zip
Archive: FY_Recover_Data.zip
inflating: FY_Recover_Data.SQL
步骤2：恢复
1）在sys用户下执行存储过程
SQL> @/home/oracle/FY_Recover_Data.SQL
Package created.
Package body created.2）查看test_emp表在数据文件中的目录
SQL> select file_name from dba_data_files f, dba_tables t where t.owner='SCOTT' and t.table_name='TEST_EMP' and t.tablespace_name = f.tablespace_name;
FILE_NAME
--------------------------------------------------------------------------------
/u03/oracle/oradata/WUTONG/datafile/o1_mf_users_cx3xt940_.dbf3）通过脚本恢复，可以用sqlplus命令行或者plsql developer执行
declare
tgtowner varchar2(30);
tgttable varchar2(30);
datapath varchar2(4000);
datadir varchar2(30);
rects varchar2(30);
recfile varchar2(30);
rstts varchar2(30);
rstfile varchar2(30);
blksz number;
rectab varchar2(30);
rsttab varchar2(30);
copyfile varchar2(30);
begin
tgtowner := 'SCOTT'; --table owner
tgttable := 'TEST_EMP'; --table name
datapath := '/u03/oracle/oradata/WUTONG/datafile/'; --必须和test.t1表所在的数据文件的目录相同
datadir := 'FY_DATA_DIR'; --oracle中目录的名字，可以修改
Fy_Recover_data.prepare_files(tgtowner, tgttable, datapath, datadir, rects, recfile, rstts, rstfile, blksz);
Fy_Recover_data.fill_blocks(tgtowner, tgttable, datadir, rects, recfile, rstts, 8, tgtowner, tgtowner, rectab, rsttab, copyfile);
Fy_Recover_data.recover_table(tgtowner, tgttable, tgtowner, rectab, tgtowner, rsttab, datadir, datadir, recfile,datadir, copyfile, blksz);
end;以上SQL脚本产生2个表空间(2个数据文件)，还有1个copy文件。
4）切换到scott用户下查看会发现多了些不一样以test_emp的表，这时找到相关有数据的表，把数据插入原表test_emp
SQL> conn scott/tiger
Connected.
SQL> select * from tab;
TNAME TABTYPE CLUSTERID
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
TEST_EMP TABLE
TEST_EMP$ TABLE
TEST_EMP$$ TABLE
7 rows selected.
SQL> insert into test_emp select from TEST_EMP$$;
14 rows created.
SQL> commit;
Commit complete.
SQL> select count(
) from test_emp;
COUNT(*)
14
当你看到这一步的时候，说明truncate的表已经完全恢复了，恭喜你数据恢复成功！
步骤3：恢复数据后，把恢复时产生的2个表空间删除，再删除对应数据文件
SQL> conn / as sysdba
Connected.
SQL> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
/u03/oracle/oradata/WUTONG/datafile/o1_mf_system_cx3xt90z_.dbf
/u03/oracle/oradata/WUTONG/datafile/o1_mf_sysaux_cx3xt930_.dbf
/u03/oracle/oradata/WUTONG/datafile/o1_mf_undotbs1_cx3xt93b_.dbf
/u03/oracle/oradata/WUTONG/datafile/o1_mf_users_cx3xt940_.dbf
/u03/oracle/oradata/WUTONG/datafile/o1_mf_wutong_cx415lcj_.dbf
/u03/oracle/oradata/WUTONG/datafile/FY_REC_DATA.DAT
/u03/oracle/oradata/WUTONG/datafile/FY_RST_DATA.DAT
7 rows selected.
SQL> drop tablespace FY_REC_DATA INCLUDING CONTENTS and datafiles ;
Tablespace dropped.
SQL> drop tablespace FY_RST_DATA INCLUDING CONTENTS and datafiles;
Tablespace dropped.
SQL> select name from v$datafile;
NAME
--------------------------------------------------------------------------------
/u03/oracle/oradata/WUTONG/datafile/o1_mf_system_cx3xt90z_.dbf
/u03/oracle/oradata/WUTONG/datafile/o1_mf_sysaux_cx3xt930_.dbf
/u03/oracle/oradata/WUTONG/datafile/o1_mf_undotbs1_cx3xt93b_.dbf
/u03/oracle/oradata/WUTONG/datafile/o1_mf_users_cx3xt940_.dbf
/u03/oracle/oradata/WUTONG/datafile/o1_mf_wutong_cx415lcj_.dbf此时已操作完成。
注意：恢复期间，原truncate表不能有操作，如果有数据生成，会影响后续的恢复。
来源：oschina
链接：https://my.oschina.net/u/4418236/blog/4784748