Making Input/Output Completion Port API Available

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The IOCP API allows SAP ASE to process multiple simultaneous asynchronous I/O operations in a scalable fashion. If you do not have IOCP version 6.1.5.0 or later, SAP ASE does not start when you run 'dataserver'. There might be error:

0509-136 Symbol    CreateIoCompletionPort (number 579) is not exported from dependent module /unix

To solve this use:

1. Run following command to check current status of IOCP

   lsdev -Cc iocp

   When IOCP is not enabled above command will only show

   iocp0 Defined I/O Completion Ports

2. To actually enable IOCP use:
   1. Run 'smitty iocp'
   2. Select Change/Show Characterstics of I/O Completion Ports
   3. Change the status of IOCP from Defined to Available
   4. Restart machine

      Note all the mount points in the AIX system using 'mount' command before reboot. If any of these mount points do not automatically mount after reboot, we should again mount them manually.

      If we have implemented Spectrum protect in _BA, _Tape (Two nodes per machine style) then restart backup scheduler via:

      bash
      nohup dsmc schedule 2> /dev/null &
      nohup dsmc schedule -optfile=/usr/tivoli/tsm/client/ba/bin64/dsm.opt1 &

   5. Run 'lsdev -Cc iocp' again which should now show

      FileSet    Level     State Description
      Path:/usr/lib/objrepos ...
      bos.iocp.rte   6.1.5.0   ...

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