Oracle 18cR3 DBMS

Oracle DBMS_CACHEUTIL Version 18.3.0.1

General Information

Library Note

Morgan's Library Page Header

For how many years have you been working with physical servers that are starving your database of the memory necessary to deploy important new performance features such as the Result Cache, Memoptimize Pool, In-Memory Aggregation, In-Memory Column Store, and Full Database Caching? Too long? Contact me to learn how to improve all queries ... not just some queries.

Purpose This undocumented package contains miscellaneous cache layer PL/SQL functions

AUTHID DEFINER

Dependencies

DBMS_ASSERT

DBMS_OUTPUT

SYS_DBA_SEGS

Documented No

First Available 11.2.0.1

Security Model Owned by SYS with EXECUTE granted to the DBA role

Source {ORACLE_HOME}/rdbms/admin/dbmscu.sql

Subprograms

DISSOLVE_AFFINITY	GRAB_AFFINITY	LIST_READMOSTLY
DISSOLVE_READMOSTLY	GRAB_READMOSTLY	OBJECT_DOWNCONVERT

DISSOLVE_AFFINITY

Try to dissolve object affinity in RAC environment dbms_cacheutil.dissolve_affinity( schema IN VARCHAR2, obj IN VARCHAR2, partition IN VARCHAR2 := NULL, dissolve_index IN BOOLEAN := TRUE, active_drm IN BOOLEAN := FALSE);

exec dbms_cacheutil.dissolve_affinity(USER, 'SERV_INST');

DISSOLVE_READMOSTLY

Try to dissolve object readmostly in a RAC environment dbms_cacheutil.dissolve_readmostly( schema IN VARCHAR2, obj IN VARCHAR2, partition IN VARCHAR2 := NULL, dissolve_index IN BOOLEAN := TRUE);

exec dbms_cacheutil.dissolve_readmostly(USER, 'SERV_INST');

GRAB_AFFINITY

Try to grab object affinity in a RAC environment dbms_cacheutil.grab_affinity( schema IN VARCHAR2, obj IN VARCHAR2, partition IN VARCHAR2 := NULL, grab_index IN BOOLEAN := TRUE, active_drm IN BOOLEAN := FALSE);

exec dbms_cacheutil.grab_affinity(USER, 'SERV_INST');

GRAB_READMOSTLY

Try to grab object readmostly in RAC environment dbms_cacheutil.grab_readmostly( schema IN VARCHAR2, obj IN VARCHAR2, partition IN VARCHAR2 := NULL, grab_index IN BOOLEAN := TRUE);

exec dbms_cacheutil.grab_readmostly(USER, 'SERV_INST');

LIST_READMOSTLY

List objects that have the readmostly property set dbms_cacheutil.list_readmostly;

exec dbms_cacheutil.list_readmostly;

OBJECT_DOWNCONVERT

Tries to downconvert object locks to shared mode in RAC dbms_cacheutil.object_downconvert( schema IN VARCHAR2, obj IN VARCHAR2, partition IN VARCHAR2 := NULL, downconvert_index IN BOOLEAN := TRUE);

exec dbms_cacheutil.object_downconvert(USER, 'SERV_INST');