Fix (APAR):  PK21673

Status:  Fix

Release:  6.0.2.7,6.0.2.5

Operating System:  AIX,HP-UX,Linux,Linux Red Hat - pSeries,Linux zSeries,OS/390,OS/400,Solaris,Windows,z/OS

Supersedes Fixes:  

CMVC Defect:  PK21673

Byte size of APAR:  22763

Date: 2006-03-24

Abstract:  The statement cache contains information that needs to be cleared without destorying the managed connection

Description/symptom of problem:  
PK21673 resolves the following problem:

ERROR DESCRIPTION:                                              
Presently, if an application is updated (re-deployed), the      
prepared statement cache is not cleared.  There are times when a
user would like to clear the statement cache associated with a  
connection.                                                     
   This APAR fix for this APAR will provide an API through which
a user can clear the statement cache associated with a          
connection.                                                     

LOCAL FIX:                                                      
None -- not sure if purging the connection pool would clear the 
statement cache.                                                

PROBLEM SUMMARY

USERS AFFECTED:
WebSphere Application Server users of JDBC.

PROBLEM DESCRIPTION:
The statement cache contains
information that needs to be cleared
without destorying the managed
connection

RECOMMENDATION:
None

The statement cache contains information that needs to be
cleared without destorying the managed connection. An API has
been added to allow customers to clear the prepared statement
cache.

PROBLEM CONCLUSION:                                             
Method                                                          
clearStatementCache(Object conn)                                
      throws SQLException                                       
                                                                
was added to the WSCallHelper class to clear the statement      
cache                                                           
                                                                
The fix for this APAR is currently targeted for inclusion       
in cumulative fixes fixpack 6.0.2.11.                           
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:  
NOTE: Choose the:
1) Release the fix applies to
2) The Editions that apply
3) Delete the Editions & Methods that do not apply and this Note

Fix applies to Editions:
Release 6.0
__ Application Server (Express or BASE)
__ Network Deployment (ND)
__ WebSphere Business Integration Server Foundation (WBISF)
__ Edge Components
__ Developer
__ Extended Deployment (XD)

Install Fix to:
Method:
__ Application Server Nodes
__ Deployment Manager Nodes
__ Both

NOTE:
The user must:
* Have Administrative rights in Windows, or be the Actual Root User in a UNIX environments.
* Logged in with the same authority level when unpacking a fix, fix pack or refresh pack.
* Be at V6.0.2.2 or newer of the Update Installer. This can be checked by reviewing the level of the Update Installer in file <was_root>/updateinstaller/version.txt.

The Update Installer can be downloaded from the following link:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg21205991

For detailed instructions to Extract the Update Installer see the following Technote:
http://www-1.ibm.com/support/docview.wss?rs=180&uid=swg21205400

1) Copy PKxxxxx.pak file directly to the maintenance directory

2) Shutdown WebSphere
Manually execute setupCmdLine.bat in Windows or . ./setupCmdLine.sh in Unix from the WebSphere instance that maintenance is being applied to.

3) Launch Update Installer

4) Enter the installation location of the WebSphere product you want to update.

5) Select the "Install maintenance package" operation.

6) Enter the file name of the maintenance package to install (PKxxxxx.pak file which was copied in the maintenance directory).

7) Install the maintenance package.

8) Restart WebSphere

Directions to remove fix:  
NOTE:
* The user must have Administrative rights in Windows, or be the Actual Root User in a UNIX environments.
* FIXES MUST BE REMOVED IN THE ORDER THEY WERE APPLIED
* DO NOT REMOVE A FIX UNLESS ALL FIXES APPLIED AFTER IT HAVE FIRST BEEN REMOVED
* YOU MAY REAPPLY ANY REMOVED FIX

Example: If your system has fix1, fix2, and fix3 applied in that order and fix2 is to be removed, fix3 must be removed first, fix2 removed, and fix3 re-applied.

1) Shutdown WebSphere
Manually execute setupCmdLine.bat in Windows or . ./setupCmdLine.sh in Unix from the WebSphere instance that uninstall is being run against.

2) Start Update Installer

3) Enter the installation location of the WebSphere product you want to remove the fix.

4) Select  "Uninstall maintenance package" operation.

5) Enter the file name of the maintenance package to uninstall (PKxxxxx.pak).

6) UnInstall maintenance package.

7) Restart WebSphere

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

2) Follow the Fix instructions to apply the fix.

3) Restart WebSphere.



Additional Information: