Executions of a package in V$db_object_cache - dbms_stats_internal
- From: John Hallas <John.Hallas@xxxxxxxxxxxxxxxxxx>
- To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 23 Jun 2009 10:15:12 +0100
I have a few questions regarding executions within v$db_object_cache on
10.2.0.3 (HPItanium)
The documentation
http://download-west.oracle.com/docs/cd/B19306_01/server.102/b14237/dynviews_1083.htm
states that executions is not used but to view v$sqlarea for actual execution
counts
Looking at the output below executions are shown for dbms_stats_internal and no
other packages (hope the format is OK)
OWNER TYPE NAME
LOADS EXECUTIONS Kept
---------- -------- --------------------------------------------------
---------- ---------- ----
SYS PACKAGE DBMS_SYS_SQL
10 0 NO
SYS PACKAGE DBMS_STATS_INTERNAL
15 91193443 NO
SYSADM PACKAGE PSFTAPI
19 0 NO
SYS PACKAGE DBMS_SESSION
20 0 NO
SYSADM PACKAGE WRAPPER
24 0 NO
SYS PACKAGE DBMS_STANDARD
33 0 NO
SYS PACKAGE DBMS_STATS
34 0 NO
SYS PACKAGE PLITBLM
34 0 NO
SYS PACKAGE DBMS_SQL
38 0 NO
SYS PACKAGE STANDARD
40 0 NO
SYS PACKAGE DBMS_UTILITY
48 0 NO
SYS PACKAGE DBMS_ASSERT
48 0 NO
SYS PACKAGE DBMS_OUTPUT
54 0 NO
SYS PACKAGE DBMS_APPLICATION_INFO
57 0 NO
I know stats is heavily used on this Peoplesoft application/database so I am
not to surprised to see a high figure, but not as high as 91 million executions
in 26 hours. However that belies the documentation and the fact that every
other execution count is zero.
The second point is regarding the difference between dbms_stats and
dbms_stats_internal. I am unable to uncover much documentation on the later but
I am assuming it is called by dbms_stats.
I am struggling to join V$DB_OBJECT_CACHE with v$SQLAREA (via V$SQLTEXT) and I
suspect I have to get down to the X$ tables to finds the hash_id of the
dbms_stats_internal package
Any help appreciated
John
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