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Troubleshooting: HFix-5059 corrects Rules Assembly Cache issues

Updated Solution — Article 44091

This article is superseded by Article 44091, Troubleshooting: PRPC 6.2 SP2 runs wrong rule or fails to see a new function after application enhancement (HFix-6560, HFix-6647).

Refer to Article 44091 for the best solution for this issue.

Issues

HFix-5059 corrects the following regression defects in PRPC 6.2 SP2:

  • Rules Assembly Cache race condition caused application deadlock and pulse NPE.

The hotfix introduces a new synchronization policy that prevents RACacheImpl.find and invalidation from running concurrently. Invalidation is protected via a ReentrantReadWriteLock to ensure single threaded access to critical areas of the code. Rules Assembly Cache lookups (via find() ) and assemblies are concurrent.

  • NPE was detected in addEntryToMemoryCache under heavy assembly loads.

The hotfix prevents assembly failure for high-volume loads.

  • Rule-Declare-Expressions were not invalidated in the database. Incorrect invalidation can result in the wrong rule being executed.

The hotfix corrects this problem.

Required Steps

The hotfix post-installation steps are critical: You must truncate the specified tables and restart the server and the application.

  1. Go to Hotfix Self-Service.
  2. Specify the version as PRPC 6.2 SP2.
  3. Find, select, and download HFix-5059.
  4. In PRPC, run the Update Manager – Hotfix Installer to install HFix-5059.
  5. After installing the hotfix, stop the application server and truncate the following tables:
    PR_SYS_CACHE_ENTRY
    PR_SYS_CACHE_IMPL
    PR_SYS_CACHE_DEP
  6. Restart the application server and the PRPC application.

Additional Information

HFix-5977 delivers Conclusion Cache optimizations and related core engine updates

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