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RHEL8.6:"IPC Send timeout" により Oracle インスタンスがダウンする

Solution In Progress - Updated -

Issue

  • 送信元が正しいポートで送信したにもかかわらず、ポートが誤っているために受信側の正しい宛先プロセスに到達しません。
  • Oracle インスタンスが "IPC Send timeout" でダウンした場合の例:
2024-07-20T22:35:12.528535+09:00
IPC Send timeout to 1.0 inc 28 for msg type 106 from opid 165 -------------------------->> !!
2024-07-20T22:35:12.530140+09:00
IPC Send timeout: Terminating pid 165 osid 1335533 -------------------------->> !!
Process termination requested for pid 1335533 [source = rdbms], [info = 2] [request issued by pid: 1335533, uid: 300]
2024-07-20T22:36:32.892259+09:00
KILL SESSION for sid=(4174, 45779

Environment

  • Red Hat Enterprise Linux 8.6 GA
  • kernel-4.18.0-372.9.1.el8
  • Oracle Real Application Clusters (RAC) バージョン 19.3.0.0.0 以降

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