eFix (APAR): PQ67474
Status: efix

Release: WebSphere 4.0.4

Operating System: all platform

Supersedes eFixes:  none

CMVC defect: 151591 

Byte size of APAR: 1034k

Date: 10/28/02

Title: PmiRegistry.isAllLevelNone is too expensive

Abstract: PmiRegistry.isAllLevelNone cannot be expensive since it is called by every EJB method invocation.

Description/symptom of problem: In WebSphere 4.04, PmiRegistry.isAllLevelNone is modified to dynamically create many 
PerfLevelDescriptor objects. Therefore, it is an expensive method. However, since the same method will be called
by every EJB method invocation, the high cost is not acceptable. The efix rewrites the method so that it will be
much cheaper.

Directions to apply efix:

1) Create temporary "efix" directory to store the jar file:
             AIX: /tmp/WebSphere/efix
   Solaris/Linux: /tmp/WebSphere/efix
         Windows: c:\temp\WebSphere\efix

2) Copy jar file to the directory

3) Shutdown WebSphere

4) Run the jar file with the following command answering questions/prompts as they appear:
   java -jar <jarfile name>

5) Restart WebSphere

6) The temp directory may be removed but the jar file should be saved.  Do not remove 
   any files created and stored in the <WASHOME>/WebSphere/AppServer/efix/<efix> directories.
   These files are required if an efix is to be removed.



Directions to remove an efix:

NOTE:  EFIXES MUST BE REMOVED IN THE ORDER THEY WERE APPLIED.  DO NOT REMOVE AN EFIX UNLESS
       ALL EFIXES APPLIED AFTER IT HAVE FIRST BEEN REMOVED.  YOU MAY REAPPLY ANY REMOVED EFIX.

Example:  If your system has efix1, efix2, and efix3 applied in that order and efix2 is to be
          removed, efix3 must be removed first, efix2 removed, and efix3 re-applied.


1) Change directory to the efix location (<WASHOME>/WebSphere/AppServer/efix/<efix#>).

2) Shutdown WebSphere

3) Run the backup jar file with the following command:
   java -jar <backup_efix#>

4) Restart WebSphere



Directions to re-apply an efix:

Follow the instructions for applying an efix.  If the backup files still exist (from the 
previous efix application), you will be prompted to overwrite.  Answer "yes" at the overwrite 
prompts.



Additional Information:
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