Enabling I/O Completion Ports

To ensure successful database, client, and grid infrastructure installation, set IOCP to Available using this procedure.

On IBM AIX on POWER Systems (64-Bit), enable I/O completion ports (IOCP) to ensure successful database and grid infrastructure installation.

To check if the IOCP module is enabled, run the lsdev command:

$ lsdev | grep iocp

The following sample output shows the IOCP status is set to Defined and hence not enabled:

iocp0      Defined       I/O Completion Ports 
By default, IOCP is set to Defined. To enable IOCP, set IOCP to Available using the following procedure:
  1. Log in as root and run the following command:
    # smitty iocp
  2. Select Change / Show Characteristics of I/O Completion Ports.
  3. Change configured state at system restart from Defined to Available.
  4. Run the lsdev command to confirm the IOCP status is set to Available:
    $ lsdev | grep iocp
    iocp0      Available       I/O Completion Ports
Restart the system to make the changes permanent.