Fix (APAR):  PI34044

Status:  Fix

Release:  8.5.5.5

Operating System:  AIX,HP-UX,IBM i,Inspur K-UX,Linux,Mac OS,Solaris,Windows,z/OS

Supersedes Fixes:  

CMVC Defect:  xxxxxx

Byte size of APAR:  368214

Date: 2015-06-23

Abstract:  improve the debug information for messaging engine to messaging engine communication problems

Description/symptom of problem:  
PI34044 resolves the following problem:

ERROR DESCRIPTION:                                              
Improve the debug information for ME-ME message pileup          
situations.                                                     

LOCAL FIX:                                                      
None                                                            

PROBLEM SUMMARY

USERS AFFECTED:
 All users of IBM WebSphere Application
Server messaging engines (ME)

PROBLEM DESCRIPTION:
In ME to ME communication for publish
subscribe messaging the health of
environment is difficult to
predict and requires too much tracing.

RECOMMENDATION:
None

In Messaging Engine to Messaging Engine communication for
publish subscribe messaging the health of environment is a
little difficult to determine and requires too much tracing to
be enabled to draw conclusions. SIBProcessor=all needed to
be enabled on all servers and it was having a huge impact on
performance.

PROBLEM CONCLUSION:                                             
With this APAR we have enhanced tracing to capture the summary  
of communication and print out vital information with minimal   
overhead.                                                       
                                                                
This new tracing can be enabled with SIBGDHealth=all trace      
string.                                                         
                                                                
The fix for this APAR is currently targeted for inclusion in    
fix packs 7.0.0.39 , 8.0.0.11 and 8.5.5.6 .  Please refer to    
the Recommended Updates page for delivery information:          
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980   


Directions to apply fix:  
Fix applies to Editions:
Release 8.5.5.5
__ Application Server (Express or BASE)
_X_ Network Deployment (ND)
__ Liberty Core
__ Edge Components
__ Developer

Install Fix to all WebSphere installations unless special instructions are included below.

Special Instructions: None

NOTE:
The user must:
* Logged in with the same authority level when unpacking a fix, fix pack or refresh pack.
* Be at V1.4.3 or newer of the Installation Manager. Certain iFixes may require a newer version of the Installation Manager and the Installation Manager will inform you during the installation process if a newer version is required.

The IBM Knowledge Center can provide details, if needed, on the use of the Installation Manager to apply the iFixes.
http://publib.boulder.ibm.com/infocenter/install/v1r4/index.jsp.  Shutdown WebSphere Application Server before applying the iFixes.  Restart WebSphere Application Server after applying the iFixes.

Directions to remove fix:  

The IBM Knowledge Center can provide details, if needed, on the use of the Installation Manager to remove the iFixes.
http://publib.boulder.ibm.com/infocenter/install/v1r4/index.jsp.  Shutdown WebSphere Application Server before removing the iFixes.  Restart WebSphere Application Server after removing the iFixes.

Directions to re-apply fix:  
1) Shutdown WebSphere Application Server.

2) Follow the Fix instructions to apply the fix.

3) Restart WebSphere Application Server.



Additional Information: