Fix (APAR): PK85622 Status: Fix Release: 6.1.0.23, 6.1.0.25, 7.0.0.3 Operating System: AIX,HP-UX,Linux,Linux pSeries,Linux zSeries,Solaris,Windows,i5/OS,IBM i Supersedes Fixes: CMVC Defect: F001414, 570654, 594736 Byte size of APAR: 491910 Date: 2009-06-24 Abstract: Some of the methods exposed in the CacheProvider Service Provider Interface (SPI) are not consumable and designed for performance for cache providers. Description/symptom of problem: PK85622 resolves the following problem: ERROR DESCRIPTION: The SPI exposed by WebSphere Dynacache for cache providers has the following issues: 1. Javadoc is incomplete and needs clarifications at multiple places 2. Some of the core caching methods are not consumable or designed for performance. LOCAL FIX: PROBLEM SUMMARY USERS AFFECTED: All users of IBM WebSphere Application Server V7.0 & V6.1 that leverage caching via an alternate cache provider configured with DynaCache. PROBLEM DESCRIPTION: Some of the methods exposed in the CacheProvider Service Provider Interface (SPI) are not consumable and designed for performance for cache providers. RECOMMENDATION: None The CacheProvider SPI in V7.0 missed a couple of important functions: 1. passing Dynacache custom properties and system custom properties to the cache providers via the com.ibm.wsspi.cache.CacheConfig interface 2. returning the older Cacheentry when an update was made to an existing entry in the com.ibm.wsspi.cache.CoreCache. The Javadoc of the CacheProvider SPIs was not clear with respect to error & exception handling during cache creation. The same SPIs are also being provided starting in V6.1.0.27 for use by V6.1 customers. PROBLEM CONCLUSION: The following SPI changes will be made in this APAR. - Added public Map getProperties() method to the com.ibm.wsspi.cache.CacheConfig interface. - Changed the signature of the com.ibm.wsspi.cache.CoreCache.put(EntryInfo, Object) method to return a com.ibm.websphere.cache.CacheEntry. The Javadoc of the CacheProvider SPIs has been improved. The changes made in this APAR help cache providers integrate better with Dynacache and make the whole caching solution more maintainable, consumable, reliable and high performing. The fix for this APAR is currently targeted for inclusion in fix pack 7.0.0.5 and 6.1.0.27. 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 for V6: Release 6 X Application Server (Express or BASE) X Network Deployment (ND) __ WebSphere Business Integration Server Foundation (WBISF) __ Edge Components __ Developer __ Extended Deployment (XD) Install Fix to: Method: X Application Server Nodes X Deployment Manager Nodes X Both Directions to apply fix to V7: Fix applies to Editions: Release 7 X Application Server (Express or BASE) X Network Deployment (ND) __ Edge Components __ Developer Install Fix to all WebSphere installations unless special instructions are included below. NOTE: The user must: * For V6, have Administrative rights in Windows, or be the Actual Root User in a UNIX environments. * For V7, logged in with the same authority level when unpacking a fix, fix pack or refresh pack. * For V6, be at V6.1.0.13 or newer of the Update Installer and for V7, be at V7.0.0.0 or newer of the Update Installer. Certain iFixes may require a newer version of the Update Installer and the Update Installer will inform you during the installation process if a newer version is required. This can be checked by reviewing the level of the Update Installer in file /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.ibm.com/support/docview.wss?rs=180&uid=swg21205400 Note that there are two different methods for delivering iFixes, depending on the contents. The fix may be delivered either as a single file with a .pak extension (such as 6.1.0.11-WS-WAS-IFPK12345.pak) or a single file with a .zip extension (such as 6.1.0.11-WS-WAS-IFPK12345.zip) which then contains one or more files with a .pak extension. 1) If your iFix is delivered as a single file with a .pak extension, Copy the .pak file directly to the maintenance directory. If your iFix is delivered as a single file with a .zip extension, unzip the file into 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) For V7 IBM i users, use the update command to install and uninstall the interim fix. The IBM Information Center can provide additional details, if needed, on the use of this command. http://www14.software.ibm.com/webapp/wsbroker/redirect?version=compass&product=was-nd-iseries&topic=rins_update. For V7 non-IBM i users and V6 users, launch the Update Installer and click the Next button on the Welcome page. 4) Enter the directory path of the installation location of the WebSphere product you want to update, and click the Next button. 5) Select the "Install maintenance package" operation and click the Next button. 6) Enter the directory path of your maintenance directory where you have the maintenance packages (.pak files) and click the Next button. 7) The Available Maintenance Package to Install page should list all maintenance packages (.pak files) that it finds in the directory path provided in the previous step. The Update Installer will select the correct maintenance packages based on your system configuration and will not allow an invalid combination to be installed. Please keep the Update Installer recommendations and click the Next button and continue with the installation of the maintenance package. 8) Please note that in the future, if a Feature Pack is installed or uninstalled, a different set of iFixes will be needed. Use the Update Installer again at that time, with the maintenance directory location where these maintenance packages are stored, to determine the required interim fixes for the new WebSphere and Feature Pack(s) combination. 9) The maintenance packages could have one of a set of names, and these names will help determine which maintenance package you need to install. The APAR name (PKxxxxx) should appear as part of the filename. Between the APAR number and the .pak extension there will be 0 to 2 characters added. The table below indicates the usage of each of the maintenance packages with respect to which Feature Packs, if any, are installed. |.pak File Names |No Feature Packs|EJB3 Only|WebServices Only| Both | |6.1.0.x-WS-WAS-IFPK12345 | X | X | X | X | |6.1.0.x-WS-WAS-IFPK12345C | X | | | | |6.1.0.x-WS-WAS-IFPK12345CE | | X | X | X | |6.1.0.x-WS-WAS-IFPK12345W | X | X | | | |6.1.0.x-WS-WAS-IFPK12345WE | | | X | X | |6.1.0.x-WS-WAS-IFPK12345E | X | | X | | |6.1.0.x-WS-WAS-IFPK12345EE | | X | | X | 10) For V7, all platforms except Windows. In pre-install summary panel, use the "verify permission" feature to verify the user has permissions to apply updates to files associated with the selected maintenance. Correct any file permissions before clicking next to start the install. 11) 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) Select file name of the maintenance package to uninstall (for example, 6.1.0.11-WS-WAS-IFPK12345.pak). 6) Verify the Uninstallation Summary and continue with the uninstall. 7) Restart WebSphere Directions to re-apply fix: 1) Shutdown WebSphere. 2) Follow the Fix instructions to apply the fix. 3) Restart WebSphere.