clob

问题 I have an table with name ABC which has CLOB data. I want to update the column to insert string in specific position in this Clob column. String to be inserted : <nv_pair> <name identifier="XYZ"></name> <value identifier="XYZ"></value> </nv_pair> Clob Data : <form> <nv_pair></nv_pair> <nv_pair></nv_pair><nv_pair></nv_pair><nv_pair></nv_pair></form> Position to be inserted : Just Before </form> 回答1: Take a look at DBMS_LOB package. BTW, it might be worth exploring the possibility of abandoning

问题 I'm trying to execute a prepared sql query which updates CLOB fields in an Oracle 10g database (10.2.0.1). If I execute the following query from inside SQL Developer and supply the values for the placeholders, there is no prblem. If I however execute it through an OracleCommand (Oracle.DataAccess.dll, version 1.102.0.1 (I think), .NET Framework 3.5), I get the error message below. Note that we are not using the default oracle client as we require bulk insertion. The given ODP version and .NET

问题 I'm using oracle 11g and I'm trying to find out the length of a text. I will normally use select length(myvar) from table, but I can't do that. The table which I want to query has a BLOB column that saves characters or photos. I want to know the number of characters that have my BLOB column. I tried to convert my BLOB into a char using UTL_RAW.CAST_TO_VARCHAR2(myblob) from table, but this functions isnt't working correctly or maybe I'm making a mistake. For example: My BLOB have the word

问题 When I try to display the contents of a LOB (large object) column in SQL*Plus, it is truncated. How do I display the whole thing? 回答1: SQL> set long 30000 SQL> show long long 30000 回答2: You may also need: SQL> set longchunksize 30000 Otherwise the LOB/CLOB will wrap. 来源： https://stackoverflow.com/questions/122772/how-do-i-display-the-full-content-of-lob-column-in-oracle-sqlplus

问题 When I try to display the contents of a LOB (large object) column in SQL*Plus, it is truncated. How do I display the whole thing? 回答1: SQL> set long 30000 SQL> show long long 30000 回答2: You may also need: SQL> set longchunksize 30000 Otherwise the LOB/CLOB will wrap. 来源： https://stackoverflow.com/questions/122772/how-do-i-display-the-full-content-of-lob-column-in-oracle-sqlplus

问题 It looks like that Hibernate started using LONG data type in version 3.5.5 (we upgraded from 3.2.7) instead of CLOB for the property of type="text" . This is causing problems as LONG data type in Oracle is an old outdated data type (see http://www.orafaq.com/wiki/LONG) that shouldn’t be used, and tables can’t have more than one column having LONG as a data type. Does anyone know why this has been changed? I have tried to set the Oracle SetBigStringTryClob property to true (as suggested in

问题 The naïve FOO = empty_clob() complains about incompatible types. I tried Googling, but (once again) had little success searching for help with Oracle. Thanks. 回答1: If you are trying to do the comparison in PL/SQL, you can just test equality as Igor's solution does SQL> ed Wrote file afiedt.buf 1 DECLARE 2 dummy clob; 3 BEGIN 4 dummy := empty_clob(); 5 IF dummy = empty_clob() THEN 6 dbms_output.put_line( 'Dummy is empty' ); 7 ELSE 8 dbms_output.put_line( 'Dummy is not empty' ); 9 END IF; 10*

问题 I have a XML as below - <?xml version="1.0"?> <step number="9"> <s_name>test</s_name> <b_sel>123456</b_sel> <b_ind>7</b_ind> </step> I want this to be converted to OCI-Lob object as below - OCI-Lob Object ( [descriptor] => Resource id #130 ) I have looked for almost all the threads related to OCI-Lob in PHP but didn't get the information which I am looking for. Hope you understand my question. Any suggestions on this would be appreciated. Thank you. 回答1: To get OCI-Lob Object We do need

问题 Having problem loading text files into database as clob. Oracle version: Oracle Database 11g EE Release 11.2.0.2.0 NLS_LANG: RUSSIAN_RUSSIA.CL8MSWIN1251 NLS_CHARACTERSET: AL32UTF8 code to load text files: DECLARE L_BFILE BFILE; L_CLOB CLOB; file_name VARCHAR2(300); BEGIN file_name := 'test.txt'; L_BFILE := BFILENAME('DIR', file_name); if (dbms_lob.fileexists(l_bfile) = 1) then INSERT INTO TEST T VALUES (SEQ_TEST.NEXTVAL, EMPTY_CLOB(),file_name) return r_data into l_clob; L_BFILE := BFILENAME(

问题 We have a table in Oracle 11g with a varchar2 column. We use a proprietary programming language where this column is defined as string. Maximum we can store 2000 characters (4000 bytes) in this column. Now the requirement is such that the column needs to store more than 2000 characters (in fact unlimited characters). The DBAs don't like BLOB or LONG datatypes for maintenance reasons. The solution that I can think of is to remove this column from the original table and have a separate table