Thursday, January 31, 2008

ORA-04030 After 10gR2 Upgrade on Windows 2003

I have faced this exact situation, a large awful Error stack with errors such as:
ORA-04030, TNS-12518.

The particular environment where I faced these issues was:
Oracle 10gR2 ( for Windows x32
Windows 2003 Enterprise Edition 32 bits

It was Right after migrating a user processes intensive application from 9iR2 ( to the above referred 10gR2 release.
I had documented this issue with the metalik Note: 10gR2 Dedicated Connections Intermittently Fail with TNS-12518 Doc ID: Note:371983.1

One of the recommendations was to reduce memory consumption, and among one of the solutions was the use of orastack.exe to achieve this reduction. Right now I am documenting the issues and drawbacks of performing this procedure.

Aonother recommendation is to reduce the SGA consumption, this was achieved by reducing the values of the SGA_TARGET and SGA_MAX_SIZE instance parameters.

Update 11/Feb/2008

The orastack utility was helpful in reducing both, the Oracle and tnslsnr executables stack size. Additionally, a reduction in users' contention greatly helped in reducing the frequency of ORA-04030 errors, it doesn't mean this error was completely wiped out, I am still waiting for the patchset to assess if I can completely get rid of this issue.

1 comment:

Muhammad Tahir said...

I post this Massgae on forum and i read your experience i realy appreciate.


Muhammad Tahir Khan(Teejay)