Is it possible to fire DDL queries from within a trigger?

Hi,
In Oracle 8.0.5, Is it possible to fire DDL queries from within a trigger?
e.g. when no. of rows is multiple of 1000, I wish to call a procedure which
analyzes the table and finds the size of the table. I am getting :
"ORA-04092: cannot COMMIT in a trigger" error message.
Regards
Sanchayan

One way around this is to use the AUTONOMOUS_TRANSACTION pragma, but I think that was introduced in 8i. Check your docs. Another way is to set up a procedure to do the ANALYZE and in your trigger submit a job using DBMS_JOB to run that procedure.
Anyway, the second option is best because you really don't want to impose the overhead of running an ANALYZE onto a DML transaction.
You are also going to run into the mutating table problem: you can't find out how big the table is, because you can't run queries against the table from within a trigger. You could use DATE_LAST_ANALYZED from USER_TAB_COLUMNS, but really you should just schedule jobs to run ANALAYZE at regular intervals - once a day, once a week, once a month, depending on the volatility and usage of any given table.
Cheers, APC

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