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Conference eps::oracle

Title:Oracle
Notice:For product status see topics: UNIX 1008, OpenVMS 1009, NT 1010
Moderator:EPS::VANDENHEUVEL
Created:Fri Aug 10 1990
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1574
Total number of notes:4428

1515.0. "relocate drd with OPS running" by DYOSW5::WILDER (Does virtual reality get swapped?) Wed Feb 19 1997 08:35

    What does Oracle OPS do if while it is running, a drd service get
    relocated through the asemgr? Will OPS crash, retry, error out, or
    what? What if we modify the drd service while OPS is running? Modifying
    the service will result in the service stopping, being deleted, being
    added, and then restarted. What happens in this case? Anyone know??
    
    Thanks,
    
    /jim
T.RTitleUserPersonal
Name		DateLines
1515.12 commentsALFAM7::GOSEJACOBThu Feb 20 1997 05:2520
    re .0
    
    1. Relocating a drd service while Oracle OPS is running will not do any
       harm. In fact this is what we usually do to demo OPS on TruCluster.
       The Oracle kernel does not have any idea about what a drd is; the
       rdrd devices look like ordinary raw disks to Oracle. So the worst
       thing that may happen during a drd service relocation is the I/O
       Oracle is issuing during that time will 'hang' in the Unix kernel.
       As far as I know Oracle has thresholds for I/O timeouts but I never
       ran into them during a drd service relocation.
    
    2. Reconfiguring a drd service is a different story though. I never
       actually tried this with OPS up and running. But one thing indicates
       you are heading for trouble when you try this: modifying a drd
       service will cause the ownership of all /dev/rdrd/drd* entries to be
       reset from oracle:dba to root:system.
    
    Hope this helps
    
    	Martin