CA IDMS IUA EIUA

Re: IDMS @ TDMF

  • 1.  Re: IDMS @ TDMF

    Posted 07-20-2006 01:01 PM
    Steve:

    Thanks for the info, this is comforting (but we still have our little
    corruption problem).

    One question; we are assuming our problem is related to heavy update
    activity going on while the volume transfer is taking place. The
    specific file in question can (per Perfmon) be averaging 5-10 writes
    per
    second over a 30 minute period; I have no idea what the instantaneous
    peaks might look like. Does your system have files subject to that
    level up write activity, or is your workload primarily retrieval?

    Thanks;

    * DQC *

    Don Casey
    APL Limited (David's customer).

    P.S. For the amusement of the listening audience; we've seen incidents
    where the broken chains are best explained by a ""write that didn't
    happen""; e.g.; two set occurrences pointing (both next and prior) into
    a
    page where the two records in question just aren't there. Either
    IDMS,
    MVS, the Shark DASD, the EMC DASD, or TDMF dropped the ball somewhere.
    Our DBAs are running some DBANs trying to get a better picture of what
    happened when. Will advise the list if we ever reach an understanding
    of what happened.