You own ID is unknown, and Bus error

[Brian Alano]

The day after I upgraded from HP-UX 9.04 to 10.20 I installed the most recent
Y2K patch bundle. Now, su from root gives:
su: Your own ID is unknown.
I went to SAM to try to figure this out, and after the status message said
"retrieving the list of users..." I got this message:
UNEXPECTED EXIT: process LANG=C LC_ALL=C /usr/sam/lbin/samx -C -p 4749 -s users
/usr/sam/lib//ug.ui exited with a non-zero exit status.

I noticed that ug.ui is in /usr/sam/lib/c, so I tried the command LANG=C
LC_ALL=C /usr/sam/lbin/samx -C -p 4749 -s users /usr/sam/lib/C/ug.ui, with the
same result.

I tried patches PHKL_17858 and PHKL_16751, which was related to SIG bus errors,
to no avail.

Any ideas?

[Dan Hull]

Often an error like this in SAM is the result of improperly or incompletely
configured patches. Try running this command:

# swconfig \*

If there are no errors, then try SAM again. For the su error, there could be
various problems. The above procedure may fix it, but we'll have to wait and
see.

[Brian Alano]

Thanks, Don.
I received Document A4049292 from my support rep, which indicated the problem
was with a corrupt pw_id_map in /tcb.
I tried deleting it per instructions. The system did rebuild the file, but the
problem was still there. I untrusted and re-trusted the system. That fixed it,
but it also eliminated all users passwords. (There probably was a way to
preserve them.)

I think my situation arose because of corruption in the 9.04 password database
prior to the 10.20 upgrade.