CA IDMS

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Generic description af a CA-IDSMS BACKUP or UNLOAD file

  • 1.  Generic description af a CA-IDSMS BACKUP or UNLOAD file

    Posted 04-26-2019 03:49 AM

    Hi.

    Could anybody give me the generic form of a CA-IDMS BACKUP file, as it is output by the BACKUP utility ?

    Same question for a CA-IDMS UNLOAD file...

    Thanks for your answers.



  • 2.  Re: Generic description af a CA-IDSMS BACKUP or UNLOAD file

    Posted 04-26-2019 09:16 AM

    Off the top of my head, it is a variable length file.  There are header blocks which describe the files or areas on the backup file.    The free space is removed from each page.  The space between the last record and the line index area.  If there is no free space, it is the full page.  If the page size plus RDW exceeds 32760 two blocks are written.