RE: catcpu and parallel compiles

Utlrp.sql calls utlrcmp.sql first. In utlrcmp.sql it creates the package utl_recomp, this is the package used in compiling invalid objects. You can call it like this to compile in parallel:

execute utl_recomp.recomp_parallel(4);

In utlrcmp.sql it gives related info abaout the parallel compilation:

Rem PARALLELISM AND PERFORMANCE
Rem Parallel recompilation can exploit multiple CPUs to reduce the time
Rem taken to recompile invalid objects. The degree of parallelism is
Rem specified by the first argument to utl_recomp.recomp_parallel().

Rem      In general, a parallelism setting of one thread per available
Rem      CPU provides a good initial setting.
Rem
Rem      However, please note that the process of recompiling an invalid
Rem      object writes a significant amount of data to system tables and
is
Rem      fairly I/O intensive. A slow disk system may be a significant
Rem      bottleneck and limit speedups available from a higher degree of
Rem      parallelism.

-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Jeffrey Beckstrom Sent: Friday, June 03, 2005 5:22 PM
To: oracle-l_at_freelists.org; oracle-db-l_at_Groups.ITtoolbox.com; ORACLE-L_at_IC.SUNYSB.EDU; oracledba_at_LazyDBA.com; oracle-rdbms_at_yahoogroups.com
Subject: catcpu and parallel compiles

Looking at installing a 9.2 patch which runs catcpu. At the end, it runs utlrp. There is a comment in the catcpu script about being able to change the value passed to utlrp so that parallel compiles can be done.
=0D

I thought utlrp only did serial compiles?
=0D
=0D
=0D

Jeffrey Beckstrom
Database Administrator
Greater Cleveland Regional Transit Authority 1240 W. 6th Street
Cleveland, Ohio 44113

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