Bug 13250244 - Shared pool leak of "KGLHD" memory when using multiple subpools (文档 ID 13250244.8)

Bug 13250244  Shared pool leak of "KGLHD" memory when using multiple subpools

 This note gives a brief overview of bug 13250244. 
 The content was last updated on: 05-JUL-2013
  Click here for details of each of the sections below.

Affects:

Product (Component)	Oracle Server (Rdbms)
Range of versions believed to be affected	Versions >= 11.1 but BELOW 12.1
Versions confirmed as being affected	11.2.0.3 11.2.0.2 11.2.0.1 11.1.0.7
Platforms affected	Generic (all / most platforms affected)

Fixed:

This issue is fixed in

12.1.0.1 (Base Release) 11.2.0.4 (Future Patch Set) 11.2.0.3.4 Database Patch Set Update 11.2.0.3 Bundle Patch 10 for Exadata Database 11.2.0.2.8 Database Patch Set Update 11.2.0.2 Bundle Patch 18 for Exadata Database 11.2.0.3 Patch 10 on Windows Platforms 11.2.0.2 Patch 21 on Windows Platforms

Symptoms:	Related To:
Error May Occur Leak (Memory Leak / Growth) Shared Pool Affected ORA-4031	_kghdsidx_count USE_STORED_OUTLINES

Description

Shared pool memory of type "KGLHD" may be leaker, potentially
leading to ORA-4031 errors when multiple shared pool subpools
are in use. 
 
The problem is easily triggered if stored outlines are used, but the use
of stored outlines is not required to hit this problem.
 
Rediscovery Notes:
This problem may be being seen of both of the following are true:
 (a) Hitting ORA-4031 or shared pool usage increases due 
     to many "KGLHD" allocations
 (b) Multiple shared pool subpools are in use.
     (eg the internal parameter _kghdsidx_count set to a value greater than 1)
 
Workaround
  Set "_kghdsidx_count"=1 so that only one shared pool subpool is used.
  Note that in highly concurrent environments this workaround may cause 
  shared pool and library cache latch related contention issues.
 

Getting a Fix
 Use one of the "Fixed" versions listed above
 (for Patch Sets / bundles use the latest version available as
  contents are cumulative - the "Fixed" version listed above is
  the first version where the fix is included)
 or
 You can check for existing interim patches here: Patch:13250244
 

Please note: The above is a summary description only. Actual symptoms can vary. Matching to any symptoms here does not confirm that you are encountering this problem. For questions about this bug please consult Oracle Support.

References

Bug:13250244 (This link will only work for PUBLISHED bugs)
Note:245840.1 Information on the sections in this article

相关内容

产品

• Oracle Database Products > Oracle Database > Oracle Database > Oracle Database - Enterprise Edition