hi,
i am trying to set up a mailing system.i successfully configured postfix. Next,i installed cyrus imapd. After installing the packages,i started the service. The service was started, but the maillog showed DBERROR messages. They were repeated number of times, and were stopped once i stoped the cyrus-imapd service. The deatils are as follows:

Packages Installed:
cyrus-imapd
cyrus-imapd-devel
cyrus-imapd murder
cyrus-imapd-nntp
cyrus-imapd-utils

Maillog Messages:

Once the service is started:

Sep 13 10:25:14 linux08 lmtpunix[30525]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:14 linux08 lmtpunix[30525]: executed
Sep 13 10:25:15 linux08 lmtpunix[30525]: DBERROR db4: Lock table is out of available locker entries
Sep 13 10:25:15 linux08 lmtpunix[30525]: DBERROR db4: Lock table is out of available locker entries
Sep 13 10:25:15 linux08 lmtpunix[30525]: DBERROR db4: PANIC: Cannot allocate memory
Sep 13 10:25:15 linux08 lmtpunix[30525]: DBERROR: critical database situation
Sep 13 10:25:15 linux08 master[30516]: process 30525 exited, status 75
Sep 13 10:25:15 linux08 master[30516]: service lmtpunix pid 30525 in READY state: terminated abnormally
Sep 13 10:25:15 linux08 master[30534]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:15 linux08 imap[30534]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:15 linux08 imap[30534]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:15 linux08 imap[30534]: DBERROR: critical database situation
Sep 13 10:25:15 linux08 master[30535]: about to exec /usr/lib64/cyrus-imapd/pop3d
Sep 13 10:25:15 linux08 pop3[30535]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:15 linux08 pop3[30535]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:15 linux08 pop3[30535]: DBERROR: critical database situation
Sep 13 10:25:15 linux08 master[30536]: about to exec /usr/lib64/cyrus-imapd/lmtpd
Sep 13 10:25:15 linux08 lmtpunix[30536]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:15 linux08 lmtpunix[30536]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:15 linux08 lmtpunix[30536]: DBERROR: critical database situation
Sep 13 10:25:15 linux08 master[30537]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:15 linux08 imap[30537]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:15 linux08 imap[30537]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:15 linux08 imap[30537]: DBERROR: critical database situation
Sep 13 10:25:15 linux08 master[30538]: about to exec /usr/lib64/cyrus-imapd/pop3d
Sep 13 10:25:15 linux08 pop3[30538]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:15 linux08 pop3[30538]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:15 linux08 pop3[30538]: DBERROR: critical database situation
Sep 13 10:25:15 linux08 imaps[30522]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 pop3s[30524]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 pop3[30528]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 pop3[30531]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 pop3[30533]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imap[30532]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imap[30521]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imap[30530]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 pop3[30523]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imaps[30527]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 pop3s[30529]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imap[30526]: skiplist: recovered /var/lib/imap/mailboxes.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imaps[30522]: skiplist: recovered /var/lib/imap/annotations.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imap[30532]: skiplist: recovered /var/lib/imap/annotations.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imap[30521]: skiplist: recovered /var/lib/imap/annotations.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imap[30530]: skiplist: recovered /var/lib/imap/annotations.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imaps[30527]: skiplist: recovered /var/lib/imap/annotations.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:15 linux08 imap[30526]: skiplist: recovered /var/lib/imap/annotations.db (0 records, 144 bytes) in 0 seconds
Sep 13 10:25:17 linux08 master[30539]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:17 linux08 imap[30539]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 imap[30539]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 imap[30539]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30540]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:17 linux08 imap[30540]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 imap[30540]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 imap[30540]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30541]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:17 linux08 master[30542]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:17 linux08 imap[30542]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 imap[30542]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 imap[30542]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30516]: process 30534 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service imap pid 30534 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30535 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service pop3 pid 30535 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30536 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service lmtpunix pid 30536 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30537 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service imap pid 30537 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30538 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service pop3 pid 30538 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30539 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service imap pid 30539 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30540 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service imap pid 30540 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30542 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service imap pid 30542 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30543]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:17 linux08 imap[30543]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 imap[30543]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 imap[30543]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30544]: about to exec /usr/lib64/cyrus-imapd/pop3d
Sep 13 10:25:17 linux08 pop3[30544]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 pop3[30544]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 pop3[30544]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30545]: about to exec /usr/lib64/cyrus-imapd/lmtpd
Sep 13 10:25:17 linux08 imap[30541]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 imap[30541]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 imap[30541]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30546]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:17 linux08 master[30547]: about to exec /usr/lib64/cyrus-imapd/pop3d
Sep 13 10:25:17 linux08 pop3[30547]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 pop3[30547]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 pop3[30547]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 lmtpunix[30545]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 lmtpunix[30545]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 lmtpunix[30545]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30516]: process 30541 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service imap pid 30541 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30543 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service imap pid 30543 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30544 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service pop3 pid 30544 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30545 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service lmtpunix pid 30545 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30516]: process 30547 exited, status 75
Sep 13 10:25:17 linux08 master[30516]: service pop3 pid 30547 in READY state: terminated abnormally
Sep 13 10:25:17 linux08 master[30548]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:17 linux08 imap[30548]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 imap[30548]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 imap[30548]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30549]: about to exec /usr/lib64/cyrus-imapd/pop3d
Sep 13 10:25:17 linux08 pop3[30549]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 pop3[30549]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 pop3[30549]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30550]: about to exec /usr/lib64/cyrus-imapd/lmtpd
Sep 13 10:25:17 linux08 imap[30546]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 imap[30546]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 imap[30546]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 lmtpunix[30550]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 lmtpunix[30550]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 lmtpunix[30550]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30551]: about to exec /usr/lib64/cyrus-imapd/imapd
Sep 13 10:25:17 linux08 imap[30551]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 imap[30551]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 imap[30551]: DBERROR: critical database situation
Sep 13 10:25:17 linux08 master[30552]: about to exec /usr/lib64/cyrus-imapd/pop3d
Sep 13 10:25:17 linux08 pop3[30552]: DBERROR: invalid berkeley_cachesize value, using internal default
Sep 13 10:25:17 linux08 pop3[30552]: DBERROR db4: PANIC: fatal region error detected; run recovery
Sep 13 10:25:17 linux08 pop3[30552]: DBERROR: critical database situation

After stopping the service:

Sep 13 10:25:22 linux08 master[30516]: exiting on SIGTERM/SIGINT



Kindly help



Regards,
Nisha