Db4 problems

[Paul van der Vlis]

Hello!

I have errors in my log, and sometimes Cyrus crashes and I have to
reboot the server because restarting gives this error:

mail:~# /etc/init.d/cyrus2.2 restart
Stopping Cyrus IMAPd: cyrmaster.
Waiting for complete shutdown........
fatal: incomplete shutdown detected, aborting.

In the log I see all the time errors like:
------
Jul  1 10:35:27 mail cyrus/imap[16841]: DBERROR db4: Database handles
open during environment close
Jul  1 10:35:27 mail cyrus/imap[16841]: DBERROR: error exiting
application: Invalid argument
------

When Cyrus stops working I see this in the logs:
-------
Jul  1 10:40:04 mail cyrus/imap[16920]: DBERROR db4: Logging region out
of memory; you may need to increase its size
Jul  1 10:40:04 mail cyrus/imap[16920]: DBERROR: opening
/var/lib/cyrus/tls_sessions.db: Cannot allocate memory
Jul  1 10:40:04 mail cyrus/imap[16920]: DBERROR: opening
/var/lib/cyrus/tls_sessions.db: cyrusdb error
---------

I am not sure what's the problem here.

Do I need to increase the memory size of the Berkeley database?
and where can I do that?

Can I remove /var/lib/cyrus/tls_sessions.db?
(I have the same problem with deliver.db.)

What will be that "Databases handles open during environment close", can
that give this problem?

With regards,

Paul van der Vlis.




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