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AIX 7.2 strange behavior.

AIX 7.2 strange behavior.

AIX 7.2 strange behavior.

Hi all,

Since upgrading a server from 7200-03-03-1914 to 7200-03-04-1938, I have noticed strange things occurring:
every day, not always the same time of the day
- the filesystems (at least /var) are remount to read only mode
- the system clock goes back three hours!
- most os commands failed with permission denied (even as root)

then after few minutes, everything goes back to normal.
Nothing shows on: errlog, conslog, syslog (all facilities) etc.

I locked users out, stopped all users jobs and cron jobs but it didn't help.
I suspect the upgrade but downgrading is to expensive to do base on a hunch.

Any advice?

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