Hi Sinardy, Further to that, if you've looked at 'recover.bsq' you'll have seen that it attempts up to 5 retries in the event of ORA-235 errors. If you want to write similarly robust code and use event 10327 to test it, then you might want to use the seldom used LIFETIME qualifier of the event syntax instead of the FOREVER qualifier that I suggested before. For example, you could simulate getting the error twice and then succeeding on the third attempt using the qualifier LIFETIME 2.
There is also an AFTER n TIMES qualifier available that can be used to delay the raising of the error. The thing to watch here is that queries against the controlfile based V$ views may need to read more than one block from the controlfile. So although a query against V$THREAD can get away with just one controlfile read, my full scan of V$LOGHIST actually did 19 controlfile reads, so I would need to specify AFTER 19 TIMES to get the query to succeed once before failing. The AFTER n TIMES qualifier can be combined with the LIFETIME qualifier using a comma to get both effects as follows. SQL> alter session set events '10327 trace name context after 19 times, lifetime 2'; Session altered. SQL> select count(*) from v$loghist; COUNT(*) ---------- 823 SQL> / select count(*) from v$loghist * ERROR at line 1: ORA-00235: controlfile fixed table inconsistent due to concurrent update SQL> / select count(*) from v$loghist * ERROR at line 1: ORA-00235: controlfile fixed table inconsistent due to concurrent update SQL> / COUNT(*) ---------- 823 SQL> @ Regards, @ Steve Adams @ http://www.ixora.com.au/ - For DBAs @ http://www.secularislam.org/call.htm - For Muslims @ http://www.christianity.net.au/ - For all -----Original Message----- Sent: Friday, 19 October 2001 19:05 To: Sinard Xing; Multiple recipients of list ORACLE-L Hi Sinardy, Sure, the following should illustrate how you might use it for testing ... SQL> alter session set events '10327 trace name context forever'; Session altered. SQL> select count(*) from v$loghist; select count(*) from v$loghist * ERROR at line 1: ORA-00235: controlfile fixed table inconsistent due to concurrent update SQL> @ Regards, @ Steve Adams @ http://www.ixora.com.au/ - For DBAs @ http://www.secularislam.org/call.htm - For Muslims @ http://www.christianity.net.au/ - For all -----Original Message----- Sent: Friday, 19 October 2001 19:20 To: Multiple recipients of list ORACLE-L Hi Steve, Can you please give some hint, what is event 10327 ? Regards, Sinardy -----Original Message----- Sent: Friday, 19 October 2001 3:38 PM To: Sinard Xing; Multiple recipients of list ORACLE-L Hi Sinardy, It probably means that a log switch was in progress at the same time as the query. However, the error can be simulated by setting event 10327. So if someone's been setting events and has messed up, that could also explain it. You can use that event for testing if you want to write robust code that handles the error. A good example of such code can be seen in '$ORACLE_HOME/rdbms/admin/recover.bsq'. @ Regards, @ Steve Adams @ http://www.ixora.com.au/ - For DBAs @ http://www.secularislam.org/call.htm - For Muslims @ http://www.christianity.net.au/ - For all -----Original Message----- Can someone tell me what is the cause of this error FROM sys.v_$loghist lh1, sys.v_$loghist lh2 * ERROR at line 6: ORA-00235: controlfile fixed table inconsistent due to concurrent update -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Steve Adams INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).