Error in starting DB2 UDB (AIX with ECC 6.0)

Question

Hello All,
I am facing error in starting the database as below :
<b>exec(): 0509-036 Cannot load program db2start because of the following errors:
        0509-130 Symbol resolution failed for /usr/lib/threads/libc.a[aio_64.o] because:
        0509-136   Symbol kaio_rdwr64 (number 0) is not exported from
                   dependent module /unix.
        0509-136   Symbol listio64 (number 1) is not exported from
                   dependent module /unix.
        0509-136   Symbol acancel64 (number 2) is not exported from
                   dependent module /unix.
        0509-136   Symbol iosuspend64 (number 3) is not exported from
                   dependent module /unix.
        0509-136   Symbol aio_nwait (number 4) is not exported from
                   dependent module /unix.
        0509-136   Symbol aio_nwait64 (number 5) is not exported from
                   dependent module /unix.
        0509-136   Symbol aio_nwait_timeout (number 6) is not exported from
                   dependent module /unix.
        0509-136   Symbol aio_nwait_timeout64 (number 7) is not exported from
                   dependent module /unix.
        0509-026 System error: Error 0
        0509-192 Examine .loader section symbols with the
                 'dump -Tv' command.
SQL1652N  File I/O error occurred.</b>
I have even changed the Acc. I/O setting also as per the note :683396 .
But the error still exists.Please help me out in this ssue.
Regards,
Chandra.

Answer 1

Hi Chandra,
this error may occure when you do not install DB2 on the node via db2setup on AIX. I assume you moved DB2 via ACC to this box. DB2 requires AIO. In general db2setup enables it for you. You can check this by issuing the following command: 'lsdev -Cc aio'
The correct output should be like:
aio0 Available Asynchronous I/O (Legacy)
The wrong one with disabled AIO:
aio0 Defined Asynchronous I/O (Legacy)
Use 'smitty aio' to configute AIO for your machine.
Regards,
Steffen