ORACLE_TRACE_ENABLE

Parameter type:	Boolean
Syntax:	ORACLE_TRACE_ENABLE = {TRUE | FALSE}
Parameter class:	Static
Default value:	FALSE
To enable Oracle Trace collections for the server, set ORACLE_TRACE_ENABLE to TRUE. This setting alone does not start an Oracle Trace collection, but it allows Oracle Trace to be used for the server. You can then start an Oracle Trace collection by using the Oracle Trace Manager application (supplied with the Oracle Diagnostics Pack) or by including a name in the ORACLE_TRACE_COLLECTION_NAME parameter.
See Also: Oracle8i Designing and Tuning for Performance for more information on the Oracle Trace facility and on setting this parameter. "ORACLE_TRACE_COLLECTION_NAME".