How to force a trace file to be created when an ORA error occurs?

There was an issue we ran into where one of the users ran out temporary tablespace (TEMP) we had a message in the database alert log that there oracle couldn’t extend temporary tablespace and we couldn’t find the cause and user who ran into the issue. So turning on an event for the error oracle will create a trace file which will contain user, machine, os, SQL which will allow DBA to find additional information.

Example:

Oracle docs note this about ORA-01652:
Error: RA-01652: unable to extend temp segment by string in tablespace string
Cause: Failed to allocate an extent of the required number of blocks for a temporary segment in the tablespace indicated.
Action: Use ALTER TABLESPACE ADD DATAFILE statement to add one or more files to the tablespace indicated.


To turn trace on you would run the following SQL:
ALTER system SET EVENTS ‘1652 TRACE NAME ERRORSTACK LEVEL 3’;

It will write to the alert.log

Tue Jul 21 11:04:45 2009
Errors in file /u01/admin/TESTDB/udump/testdb_ora_17682588.trc:
ORA-1652: unable to extend temp segment by 128 in tablespace TEMP

The trace file would contain the following information including the SQL statement:
….
oct: 2, prv: 0, sql: 7000000593f3dc8, psql: 700000057c3ec30, user: 420/TEST
O/S info: user: ajaffer, term: MYCOMPUTER, ospid: 3684:2444, machine: MYCOMPUTERNAME

To turn trace off you would run the following SQL:
ALTER system SET EVENTS ‘1652 TRACE NAME ERRORSTACK OFF’;

If one would like to set an event in the spfile, you can set by executing the DDL below. If there are multiple events then it can be set by they have to be “:” separated. In the example below event is set for ORA-01653 and ORA-01652
ALTER system SET event=’1653 TRACE NAME ERRORSTACK LEVEL 3:1652 TRACE NAME ERRORSTACK LEVEL 3′ scope=SPFILE;

To clear the event in the spfile, you can execute the following SQL
ALTER SYSTEM SET EVENT=” SCOPE=spfile;

One can similar turn trace on for various ora errors but be aware that some of them by caused internally from within Oracle example ORA-604 which you may not want to turn on an event for.

Thank you for reading and support.