sqlplus failed to start

[yls177]

i started mysqlpus '/ as sysdba' then get the below


exec(): 0509-036 Cannot load program sqlplus because of the following errors:
0509-130 Symbol resolution failed for /usr/lib/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.
0509-150 Dependent module libc.a(aio_64.o) could not be loaded.
0509-026 System error: Cannot run a file that does not have a valid form
at.
0509-192 Examine .loader section symbols with the
'dump -Tv' command.



a search in goggle prompt me to check my aio.. indeed, it was not available. so i have to change it and restart it.

1) is there any way to change the aio status other than restart the box?

2) what are the error messages linked to aio?

thanks

[oddster]

If you really do not wish to reboot, you could change the database init.ora parameter disk_asynch_io to FALSE to disable the use of asynchronous I/O within the database. You can simulate Asynchronous I/O by adding DBWRs.
Check this link for details:
http://metalink.oracle.com/metalink/...T&p_id=47328.1
.
However, I would strongly advise you to take advantage of aio and reboot if necessary.
Your questions on aio and rebooting the server are probably better suited to a UNIX forum somwhere.
.
Brgds,
Andy

[rameshgiri26]

the Oracle Home have not been set on unix environment.

Please set the Oracle_home on unix environment and export it.

then it works.

[Rickenbacker]

1) is there any way to change the aio status other than restart the box?

2) what are the error messages linked to aio?

It depends on your operating system and Oracle version.

A new Oracle install on AIX 64 bit mode perhaps?

[yls177]

Originally posted by rameshgiri26
the Oracle Home have not been set on unix environment.

Please set the Oracle_home on unix environment and export it.

then it works.

is this really the root cause? i did a reboot and everything is fine.

If you really do not wish to reboot, you could change the database init.ora parameter disk_asynch_io to FALSE to disable the use of asynchronous I/O within the database. You can simulate Asynchronous I/O by adding DBWRs.
Check this link for details:
http://metalink.oracle.com/metalink...OT&p_id=47328.1
.
However, I would strongly advise you to take advantage of aio and reboot if necessary.
Your questions on aio and rebooting the server are probably better suited to a UNIX forum somwhere.
.
Brgds,
Andy

can u post that note here?