1.342 TIMED_OS_STATISTICS

TIMED_OS_STATISTICS specifies (in seconds) the interval at which Oracle collects operating system statistics when a request is made from the client to the server or when a request completes.

Property Description

Parameter type

Integer

Default value

If STATISTICS_LEVEL is set to ALL, then 60

If STATISTICS_LEVEL is set to BASIC or TYPICAL, then 0

Modifiable

ALTER SESSION, ALTER SYSTEM

Modifiable in a PDB

Yes

Range of values

Unlimited

Basic

No

On dedicated servers, Oracle collects operating system statistics at user logon and after each subsequent client invocation through the OCI into the Oracle server as a remote procedure call message.

On shared servers, Oracle collects statistics when client calls to Oracle are processed.

A value of zero specifies that operating system statistics are not gathered. To collect statistics, set a value meaningful for your application and site needs.

Note:

Gathering operating system statistics is very expensive. Oracle recommends that you set this parameter in an ALTER SYSTEM statement rather than in the initialization parameter file, and that you reset the value to zero as soon as the needed statistics have been gathered.

See Also:

Oracle Database Performance Tuning Guide for more information about this parameter