Hi,

We have RHEL 4 update 4 running on IBM Server.

Recently i upgraded Database from 9.2.0.6 to 9.2.0.8.

After the upgrade was over ( which was sucessfull ) ,i started getting errors for ls command thru out the server

[oratst@tatasons lib]$ ls
ls: error while loading shared libraries: libacl.so.1: cannot open shared object file: Input/output error

Can someone help ? This is Urgent !!

Regards

Reboot. Check for error lights on the disks. Boot from live CD and fsck the partitions.

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Thanks for reply, however since this problem has coincided with the Oracle patch application, perhaps Oracle patch removed this library file?
Can a Linux admin recover this lost file?

The library belongs to the acl package. You could try reinstalling acl with yum.

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It looks like it is time to upgrade your system. RHEL 4 has been out of maintenance for quite a while- about 4 years out of date.

"Input/output error" means something is wrong with the filesystem/disk/hardware. The timing is probably coincidental.

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Thanks hazel
Can you give me the command to reinstall all package?
All is already installed.
It seems only that particular file is missing.

Did you pay attention to the I/O error? Not only your OS is outdated, your hard drive may be dying, too. I'd have a closer look at this issue before it is too late.

We have planned for an upgrade of Rhel 4 to OEL 7.

However till that time , we have to live with Rhel.

Our h/w is 8 years old , so a h/w upgrade also is in pipeline.

We have asked for linux Admin to have a look.

However apart from ls command , many other commands are working properly.

If there was a Disk error , none of the commands would have worked.

This seems more like a case of a particular library getting erased , and affecting only those commands which are using that shared lib.

I have checked that the ACL shared lib is installed in this Linux.

However the physical file is missing for sure.

So can we rectify this ? We have a production server ( where things are fine ) , and this file is present over there.

Regards,

[oratst@tatasons ~]$ ldd /bin/ls
/lib/libcwait.so (0x0058f000)
librt.so.1 => /lib/tls/librt.so.1 (0x00a65000)
libacl.so.1 => not found ************************************> see here
libselinux.so.1 => /lib/libselinux.so.1 (0x003b7000)
libc.so.6 => /lib/tls/libc.so.6 (0x00123000)
libpthread.so.0 => /lib/tls/libpthread.so.0 (0x0036c000)
/lib/ld-linux.so.2 (0x00105000)

Become root, then type yum remove acl followed by yum install acl

You could have found that out by yourself by reading the yum man page.

Hazel ,

Thanks for the update.
Actually i am an Oracle Dba , i am not confident on Linux admin ( even if i read the manual).
It seems easy to fire those 2 commands.

however seems i can't find yum
[root@tatasons ~]# yum
-bash: yum: command not found

Regards,

You might have some trouble finding repositories for RHEL 4.

I'm not sure yum was installed by default on RHEL 4 either (but it might depend on which release). I find that it was not available for 4.0, but was ported to 4.9 so it depends on how uptodate the release is as to whether a historical repository will have it.

I found this discussion on installing yum on a 4.0 saying it wasn't available until it was backported to 4.7/4.8/4.9, but still recommended using "uptodate".

http://www.linuxquestions.org/questi...nually-928888/

I looked at http://www.pramberger.at/peter/servi...ository/rhel4/ as a historical repository for RHEL 4... and didn't find yum there either.

You may have to manually search for the rpm package you want to get the "missing" file - but it should be on your install disk, or in the above archived repository (or another one).

Oh dear.

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Hi. ¿Do you erase link libacl.so.1? Sometimes libacl.so or libacl.so.0 (or so.1) is a link to the file libacl.so.1.x.x. When you update the system, may be erased the link and cant put a new one. Or the link continue and the system erase old library and dont change the link.
Another problem may be a diferent 'ls' which need so.1.x.x but the system have so.0.x.x or s.2.x.x
Take a look at the /lib and /usr/lib directories. Sometimes special libraries files were on special directories under /lib/i486 /lib/i686 or /lib/i486-linux-gnu , etc.

Have a nice day.