8.55 tools upgrade cache issue

After upgrading to peopletools 8.55, our application engine started failing with a variety of cache error messages.It is a tricky scenario given our setup which is as follows:

  • The failing psae process are triggered via command line using ksh wrapper script with psae commands
  • Upgrade from 8.53 to 8.55 tools version
  • Filesystem is being shared between 2 Linux servers running multiple process  scheduler instance

Took as multiple cache parameters change in the process scheduler before identifying the issue. Turns out that the compatibility with the SAN filesystem is the culprit and has something to do with the filesystem locking mechanism for SAN v3

Errors messages

  • Meta-SQL error at or near position 177 
  • PSPAL: Abort: Unexpected signal received
  • errorno = 2-No such file or directory
  • errorno = 116-Stale file handle
  • errorno = 10-No child processes