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RHEL 5 で "su: cannot set user id: Resource temporarily unavailable" エラーが発生しました

Solution Verified - Updated -

Issue

  • ユーザー ID を設定することができません。su - oracle コマンドを実行すると、以下のエラーメッセージが出力されます。

    su: cannot set user id:Resource temporarily unavailable

Environment

  • Red Hat Enterprise Linux 5
  • Oracle RAC10gR2 または 11g
  • /etc/security/limits.conf。たとえば、以下のようになります。
    *          soft     nproc          2047
*          hard     nproc          16384
*          soft     nofile         1024
*          hard     nofile         65536

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