Synching index with a trigger

Question

Hi all,
I have the following trigger setup:
CREATE OR REPLACE TRIGGER update_file_content
AFTER INSERT OR UPDATE OR DELETE ON test_files
BEGIN
if deleting then
ctx_ddl.optimize_index('file_content_idx','FULL');
else
ctx_ddl.sync_index('file_content_idx');
end if;
END;
Problem is that whenever I insert/update/delete something in the table I get the following errors:
17:47:04 Error: ORA-20000: Oracle Text error:
DRG-51300: error getting dml Queue lock
ORA-04092: cannot COMMIT in a trigger
ORA-06512: at "CTXSYS.DRUE", line 160
ORA-06512: at "CTXSYS.CTX_DDL", line 539
ORA-06512: at "UPDATE_FILE_CONTENT", line 5
ORA-04088: error during execution of trigger 'UPDATE_FILE_CONTENT'
Those comments alone work perfect. So, actually how can I synch my index to be uptodate all the time?
Nitai

Answer 1

I left out a couple of single quotes. Please see the corrected code in the demo below.
scott@ORA92> CREATE TABLE test_files
  2    (test_col VARCHAR2(60))
  3  /
Table created.
scott@ORA92> CREATE INDEX file_content_idx
  2  ON test_files (test_col)
  3  INDEXTYPE IS CTXSYS.CONTEXT
  4  /
Index created.
scott@ORA92> CREATE OR REPLACE TRIGGER update_file_content
  2    AFTER INSERT OR UPDATE OR DELETE ON test_files
  3  DECLARE
  4    v_job NUMBER;
  5  BEGIN
  6    if deleting then
  7        DBMS_JOB.SUBMIT
  8          (v_job, 'ctx_ddl.optimize_index(''file_content_idx'',''FULL'');', SYSDATE);
  9    else
10        DBMS_JOB.SUBMIT
11          (v_job, 'ctx_ddl.sync_index(''file_content_idx'');', SYSDATE);
12    end if;
13  END;
14  /
Trigger created.
scott@ORA92> SHOW ERRORS
No errors.
scott@ORA92> INSERT INTO test_files (test_col)
  2  VALUES ('first inserted test record')
  3  /
1 row created.
scott@ORA92> COMMIT
  2  /
Commit complete.
scott@ORA92> EXEC DBMS_LOCK.SLEEP (15)
PL/SQL procedure successfully completed.
scott@ORA92> SELECT token_text FROM dr$file_content_idx$i
  2  /
TOKEN_TEXT
FIRST
INSERTED
RECORD
TEST
scott@ORA92> SELECT * FROM test_files
  2  WHERE  CONTAINS (test_col, 'first') > 0
  3  /
TEST_COL
first inserted test record
scott@ORA92>