This is because "ENABLE STORAGE IN ROW" is the default, which means that oracle will store the first 4000 bytes in the original block. The first part of a LOB is, essentially, identical to VARCHAR2(4000) or VARRAW(4000). If you say something like
CREATE TABLE t
(
ISCT_ID NUMBER(10),
CONTENT CLOB
)
TABLESPACE UNDOTBS
LOB(CONTENT) STORE AS LOB_CONTENTS (
TABLESPACE SYSTEM
DISABLE STORAGE IN ROW
NOCACHE
LOGGING)
/You will not be able to do that any longer. You cannot, however, exceed 4000 characters (I'm not sure what happens if the characters are multibyte ones - may be Steve or Cary could help with that).
On 10/16/2003 04:54:26 PM, Nancy Hu wrote:
I know Oracle provides us dbms_lob package to manipulate LOB data. However, I can use standard DML to manipulate CLOB data as following. Is there advantage to use dbms_lob package?
SQL> CREATE TABLE t 2 ( 3 ISCT_ID NUMBER(10), 4 CONTENT CLOB 5 );
Table created.
SQL> insert into t values(1, 'test');
1 row created.
SQL> insert into t values(2, NULL);
1 row created.
SQL> update t set content='test2' where isct_id=2;
1 row updated.
SQL> select * from t;
ISCT_ID CONTENT ------------------------------------------------------- 1 test
2 test2
SQL>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Nancy Hu INET: [EMAIL PROTECTED]
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Mladen Gogala Oracle DBA
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