Originally posted by: dot7171

A remote SA is getting these errors when attempting to login a server

Could not load program -ksh:
Could not load module /usr/lib/libc.a(shr.o).
        Dependent module libcrypt.a(shr.o) could not be loaded.
Could not load module libcrypt.a(shr.o).
System error: No such file or directory

He attempts to boot up in maintenance mode with mksysb and run fsck on /usr but it fails. So he restores the system with the mksysb and everything is good until the next morning when the issue starts up again. I thought memory leak but when fsck does not work I changed my mind on that. He is running older version of AIX 5.2 because archived system

I am thinking something is running that is corrupting /usr

Has anyone ever seen this before ?
 

Originally posted by: LaurentOliva

there would be a huge number of reasons that causing /usr to be corrupted.

The system needs to be audited.

Is there any crontab on the system that causing the execution of bad command/scripts wich deletes legitime files ?

Do the hosted applications make something wrong ?

Did you check the usage of filesystems ?

etc... etc...