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SQL> SHOW PARAMETERS
BLOCK
in their names:SQL> SHOW PARAMETERS BLOCK
STATISTICS_LEVEL
specifies the level of collection for database and operating system statistics. The Oracle Database collects these statistics for a variety of purposes, including making self-management decisions.TYPICAL
ensures collection of all major statistics required for database self-management functionality and provides best overall performance. The default value should be adequate for most environments.STATISTICS_LEVEL
parameter is set to ALL
, additional statistics are added to the set of statistics collected with the TYPICAL
setting. The additional statistics are timed operating system statistics and plan execution statistics.STATISTICS_LEVEL
parameter to BASIC
disables the collection of many of the important statistics required by Oracle Database features and functionality, including:STATISTICS_LEVEL
parameter can be modified by either ALTER SESSION or ALTER SYSTEM commandSTATISTICS_LEVEL
. When modified by ALTER SESSION
, the following advisories or statistics are turned on or off in the local session only. Their systemwide state is not changedV$STATISTICS_LEVEL
view displays information about the status of the statistics or advisories controlled by the STATISTICS_LEVEL
parameterV$STATISTICS_LEVEL