日志操作
查看日志局域
SQL> select file_id,path,rlog_size/1024/1024 as "Size" from V$RLOGFILE;
LINEID FILE_ID PATH Size
---------- ----------- ----------------------------------- --------------------
1 0 /dm/dmdbms/data/DAMENG/DAMENG01.log 256
2 1 /dm/dmdbms/data/DAMENG/DAMENG02.log 256
used time: 2.093(ms). Execute id is 9.
查看当前使用日志
SQL> select cur_file from V$RLOG;
LINEID CUR_FILE
---------- -----------
1 0
used time: 0.502(ms). Execute id is 10.
添加日志语句
SQL> alter database add logfile '/dm/dmdbms/data/DAMENG/DAMENG03.log' size 128;
executed successfully
used time: 24.975(ms). Execute id is 11.
SQL> select file_id,path,rlog_size/1024/1024 as "Size" from V$RLOGFILE;
LINEID FILE_ID PATH Size
---------- ----------- ----------------------------------- --------------------
1 0 /dm/dmdbms/data/DAMENG/DAMENG01.log 256
2 1 /dm/dmdbms/data/DAMENG/DAMENG02.log 256
3 2 /dm/dmdbms/data/DAMENG/DAMENG03.log 128
used time: 0.273(ms). Execute id is 12.
对日志文件进行resize
SQL> alter database resize logfile '/dm/dmdbms/data/DAMENG/DAMENG03.log' to 256;
executed successfully
used time: 3.970(ms). Execute id is 13.
SQL> select file_id,path,rlog_size/1024/1024 as "Size" from V$RLOGFILE;
LINEID FILE_ID PATH Size
---------- ----------- ----------------------------------- --------------------
1 0 /dm/dmdbms/data/DAMENG/DAMENG01.log 256
2 1 /dm/dmdbms/data/DAMENG/DAMENG02.log 256
3 2 /dm/dmdbms/data/DAMENG/DAMENG03.log 256
used time: 0.243(ms). Execute id is 14.
采用命令行进行开启归档
alter database mount;
alter database add archivelog 'DEST=/dm/dmarch,TYPE=local,FILE_SIZE=256,space_limit=0';
alter database archivelog;
alter database open;
SQL> alter database mount;
executed successfully
used time: 00:00:01.744. Execute id is 0.
SQL> alter database add archivelog 'DEST=/dm/dmarch,TYPE=local,FILE_SIZE=256,space_limit=0';
executed successfully
used time: 1.925(ms). Execute id is 0.
SQL> alter database archivelog;
executed successfully
used time: 11.557(ms). Execute id is 0.
SQL> alter database open;
executed successfully
used time: 00:00:01.732. Execute id is 0.
SQL> select arch_mode from v$database;
LINEID ARCH_MODE
---------- ---------
1 Y
used time: 1.970(ms). Execute id is 4.
采用配置文件配置归档模式
[dmdba@dm1 DAMENG]$ cat dm.ini |grep ARCH_INI
ARCH_INI = 1 #dmarch.ini
[dmdba@dm1 DAMENG]$ cat dmarch.ini
#DaMeng Database Archive Configuration file
#this is comments
ARCH_WAIT_APPLY = 1
[ARCHIVE_LOCAL1]
ARCH_TYPE = LOCAL
ARCH_DEST = /dm/dmarch
ARCH_FILE_SIZE = 256
ARCH_SPACE_LIMIT = 0
关闭归档：
alter database mount;
alter database noarchivelog;
alter database open;
SQL> alter database mount;
executed successfully
used time: 00:00:01.751. Execute id is 0.
SQL> alter database noarchivelog;
executed successfully
used time: 33.369(ms). Execute id is 0.
SQL> alter database open;
executed successfully
used time: 00:00:01.724. Execute id is 0.
SQL> select arch_mode from v$database;
LINEID ARCH_MODE
---------- ---------
1 N
[dmdba@dm1 DAMENG]$ cat dm.ini |grep ARCH_INI
ARCH_INI = 0 #dmarch.ini
图形化开关归档
几个关键视图
V$RLOG 、V$RLOGFILE、V$ARCHIVED_LOG
SQL> desc V$RLOG
LINEID NAME TYPE$ NULLABLE
---------- -------------- ------- --------
1 CKPT_LSN BIGINT Y
2 FILE_LSN BIGINT Y
3 FLUSH_LSN BIGINT Y
4 CUR_LSN BIGINT Y
5 NEXT_SEQ BIGINT Y
6 N_MAGIC INTEGER Y
7 DB_MAGIC BIGINT Y
8 FLUSH_PAGES INTEGER Y
9 FLUSHING_PAGES INTEGER Y
10 CUR_FILE INTEGER Y
11 CUR_OFFSET BIGINT Y
12 CKPT_FILE INTEGER Y
13 CKPT_OFFSET BIGINT Y
14 FREE_SPACE BIGINT Y
15 TOTAL_SPACE BIGINT Y
16 SUSPEND_TIME DATETIME(6) Y
17 UPD_CTL_LSN BIGINT Y
18 N_RESERVE_WAIT INTEGER Y
19 TOTAL_FLUSH_PAGES BIGINT Y
20 TOTAL_FLUSH_TIMES BIGINT Y
21 TOTAL_ECPR_FLUSH_PAGES BIGINT Y
22 GLOBAL_NEXT_SEQ BIGINT Y
LINEID NAME TYPE$ NULLABLE
---------- --------------------- ----------- --------
23 N_PRIMAY_EP INTEGER Y
24 PRIMARY_DB_MAGIC BIGINT Y
25 CKPT_N_PRIMAY_EP INTEGER Y
26 CKPT_PRIMARY_DB_MAGIC BIGINT Y
27 MIN_EXEC_VER VARCHAR(64) Y
28 MIN_DCT_VER INTEGER Y
28 rows got
SQL> desc V$RLOGFILE
LINEID NAME TYPE$ NULLABLE
---------- ------------ ------------ --------
1 GROUP_ID INTEGER Y
2 FILE_ID INTEGER Y
3 PATH VARCHAR(256) Y
4 CLIENT_PATH VARCHAR(256) Y
5 CREATE_TIME DATETIME(6) Y
6 RLOG_SIZE BIGINT Y
7 MIN_EXEC_VER VARCHAR(64) Y
8 MIN_DCT_VER INTEGER Y
8 rows got
used time: 6.346(ms). Execute id is 7.
SQL> desc V$ARCHIVED_LOG
LINEID NAME TYPE$ NULLABLE
---------- ----------------- ------------ --------
1 RECID INTEGER Y
2 STAMP INTEGER Y
3 NAME VARCHAR(513) Y
4 DEST_ID INTEGER Y
5 THREAD# BIGINT Y
6 SEQUENCE# INTEGER Y
7 RESETLOGS_CHANGE# INTEGER Y
8 RESETLOGS_TIME DATETIME(6) Y
9 RESETLOGS_ID INTEGER Y
10 FIRST_CHANGE# BIGINT Y
11 FIRST_TIME DATETIME(6) Y
12 NEXT_CHANGE# BIGINT Y
13 NEXT_TIME DATETIME(6) Y
14 BLOCKS INTEGER Y
15 BLOCK_SIZE INTEGER Y
16 CREATOR VARCHAR(7) Y
17 REGISTRAR VARCHAR(7) Y
18 STANDBY_DEST VARCHAR(3) Y
19 ARCHIVED VARCHAR(3) Y
20 APPLIED VARCHAR(9) Y
21 DELETED VARCHAR(3) Y
22 STATUS VARCHAR(1) Y
LINEID NAME TYPE$ NULLABLE
---------- --------------------- ----------- --------
23 COMPLETION_TIME DATETIME(6) Y
24 DICTIONARY_BEGIN VARCHAR(3) Y
25 DICTIONARY_END VARCHAR(3) Y
26 END_OF_REDO VARCHAR(3) Y
27 BACKUP_COUNT INTEGER Y
28 ARCHIVAL_THREAD# INTEGER Y
29 ACTIVATION# INTEGER Y
30 IS_RECOVERY_DEST_FILE VARCHAR(3) Y
31 COMPRESSED VARCHAR(3) Y
32 FAL VARCHAR(3) Y
33 END_OF_REDO_TYPE VARCHAR(10) Y
34 BACKED_BY_VSS VARCHAR(3) Y
35 ARCH_TYPE VARCHAR(128) Y
36 EP_SEQNO INTEGER Y
37 ARCH_SEQ BIGINT Y
38 NEXT_SEQ BIGINT Y
39 VERSION BIGINT Y
39 rows got
used time: 8.665(ms). Execute id is 8.
来源：CSDN
作者：黄继生 jisen
链接：https://blog.csdn.net/jisen_huang/article/details/104613007