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SQL>
SQL> CREATE TABLE lobdemo (
2 key NUMBER,
3 clob_col CLOB,
4 blob_col BLOB);
Table created.
SQL>
SQL> CREATE OR REPLACE TRIGGER LOBTrigger
2 BEFORE UPDATE ON lobdemo
3 FOR EACH ROW
4 DECLARE
5 v_InitialString VARCHAR2(50) :=
6 'LOBTrigger: ';
7 BEGIN
10 DBMS_LOB.WRITE(:new.clob_col, LENGTH(v_InitialString),
11 1, v_InitialString);
12 END LOBTrigger;
13 /
Trigger created.
SQL> drop table lobdemo;
Table dropped.
SQL>
SQL>
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