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OpenVMS: RMAN backup or archiving the redo logs hangs on control file access. (Doc ID 1360124.1)

Last updated on OCTOBER 08, 2023

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
HP OpenVMS Itanium
HP OpenVMS Alpha


Oracle server processes hang when accessing the control file.
There are several symptoms of this problem:

  • The OS is OpenVMS 8.4, the problems are not seen on earlier (8.3) versions.

  • On an active database in archivelog mode, sessions hang on event 'log file switch (archiving needed)' when the
    redologs needs to be archived.

  • RMAN backup using target database control file will hang.

    The RMAN client session hangs in foreground, the server session hangs on
    event 'control file sequential read'

    Server process stack dump:
    sedst1 <- ksedmp <- ksdxfdmp <- ksdxcb <- sspper
    <- sspsck <- %X0 <- vpIdle <- schVpIdlePrim <- schNullThreadRoutine
    <- thdBase <- %X0 <- pthread_main

  • Instance restart will hang on shutdown and at startup on alter database open


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