AutoCommit after DBMS_DATAPUMP.open

Question

Hi, is there any way to avoid autocommit after DBMS_DATAPUMP.open? I want to rollback changes if export fails, but after DBMS_DATAPUMP.open (even if export fails) changes are commited...
plsql code:
INSERT INTO courier(courier_id, fname) VALUES (1001, 'myname');
v_handle := DBMS_DATAPUMP.open(
operation => 'EXPORT',
job_mode => 'TABLE',
remote_link => NULL,
job_name => v_jobname,
version => 'COMPATIBLE');
rollback;
This is not the code i am using, just easiest way to invoke the problem.
oracle version: Oracle Database 10g Release 10.2.0.1.0

Answer 1

You need autonomous transactions, see http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14251/adfns_sqlproc.htm#sthref306
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At times, you may want to commit or roll back some changes to a table independently of a primary transaction's final outcome. For example, in a stock purchase transaction, you may want to commit a customer's information regardless of whether the overall stock purchase actually goes through. Or, while running that same transaction, you may want to log error messages to a debug table even if the overall transaction rolls back. Autonomous transactions allow you to do such tasks.
An autonomous transaction (AT) is an independent transaction started by another transaction, the main transaction (MT). It lets you suspend the main transaction, do SQL operations, commit or roll back those operations, then resume the main transaction.
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HTH
Enrique