1.334 SQL_TRACE
SQL_TRACE
enables or disables the SQL trace facility.
Property | Description |
---|---|
Parameter type |
Boolean |
Default value |
|
Modifiable |
|
Modifiable in a PDB |
Yes |
Range of values |
|
Basic |
No |
Setting this parameter to true
provides information on tuning that you can use to improve performance.
Note:
Using this initialization parameter to enable the SQL trace facility for the entire instance can have a severe performance impact. Enable the facility for specific sessions using the ALTER SESSION
statement. If you must enable the facility on an entire production environment, then you can minimize performance impact by:
-
Maintaining at least 25% idle CPU capacity
-
Maintaining adequate disk space for the
USER_DUMP_DEST
location -
Striping disk space over sufficient disks
Note:
The SQL_TRACE
parameter is deprecated. Oracle recommends that you use the DBMS_MONITOR
and DBMS_SESSION
packages instead. SQL_TRACE
is retained for backward compatibility only.
See Also:
-
Oracle Database PL/SQL Packages and Types Reference for more information about the
DBMS_MONITOR
package -
Oracle Database PL/SQL Packages and Types Reference for more information about the
DBMS_SESSION
package -
Oracle Database Performance Tuning Guide for more information about performance diagnostic tools