Help me, please ...

After a power outage my server no longer works.
Here the log:


==> mailbox.log <==
2011-10-17 10:57:56,765 INFO [main] [] redolog - Starting pre-startup crash recovery
2011-10-17 10:57:57,023 INFO [main] [] redolog - Redoing 3 uncommitted transactions
2011-10-17 10:57:57,023 INFO [main] [] redolog - REDOING: txn 1318838859.3 [CreateMessage] ver=1.31, tstamp=1318850898729, change=537800, mailbox=63, id=383660, rcpt=jean@completo.com.br, rcvDate=1318850898729, shared=false, blobDigest="6eS1Ihiy2u3zlD92KR7CFvFIlPA=", size=7299, dataLen=7299, folder=4, conv=-1, convFirstMsgId=-1, calItemPartStat=NE, noICal=false, flags=512, tags="", bodyType=1, path=/opt/zimbra/store/incoming/1318838858077-2.msg
2011-10-17 10:57:58,245 INFO [main] [] index - Initialized Index for mailbox 63 directory: LuceneIndex{mbox=63, dir=org.apache.lucene.store.NIOFSDirectory@/opt/zimbra/index/0/63/index/0 lockFactory=org.apache.lucene.store.SingleInstance LockFactory@6b0ede6} Analyzer=com.zimbra.cs.index.ZimbraAnalyzer@49d29a 78
2011-10-17 10:57:58,245 INFO [main] [] cache - initializing folder and tag caches for mailbox 63

==> zmconfigd.log <==
2011-10-17 10:57:57,877 zmconfigd CRITICAL [27438-MainThread] Tracking service antispam
2011-10-17 10:57:57,878 zmconfigd WARNING [27438-MainThread] Watchdog: service antispam now available for watchdog.
2011-10-17 10:57:58,193 zmconfigd CRITICAL [27438-MainThread] Tracking service antivirus
2011-10-17 10:57:58,194 zmconfigd WARNING [27438-MainThread] Watchdog: service antivirus now available for watchdog.
2011-10-17 10:57:58,259 zmconfigd CRITICAL [27438-MainThread] Tracking service ldap
2011-10-17 10:57:58,262 zmconfigd WARNING [27438-MainThread] Watchdog: service ldap now available for watchdog.
2011-10-17 10:57:58,411 zmconfigd CRITICAL [27438-MainThread] Tracking service logger
2011-10-17 10:57:58,411 zmconfigd WARNING [27438-MainThread] Watchdog: service logger now available for watchdog.
2011-10-17 10:57:58,638 zmconfigd CRITICAL [27438-MainThread] Tracking service mailbox
2011-10-17 10:57:58,640 zmconfigd WARNING [27438-MainThread] Watchdog: service mailbox now available for watchdog.
2011-10-17 10:57:58,801 zmconfigd CRITICAL [27438-MainThread] Tracking service mailboxd
2011-10-17 10:57:58,806 zmconfigd WARNING [27438-MainThread] Watchdog: service mailboxd now available for watchdog.
2011-10-17 10:58:00,049 zmconfigd CRITICAL [27438-MainThread] Tracking service mta
2011-10-17 10:58:00,052 zmconfigd WARNING [27438-MainThread] Watchdog: service mta now available for watchdog.
2011-10-17 10:58:00,273 zmconfigd CRITICAL [27438-MainThread] Tracking service sasl
2011-10-17 10:58:00,273 zmconfigd WARNING [27438-MainThread] Watchdog: service sasl now available for watchdog.

==> mailbox.log <==
2011-10-17 10:58:00,650 INFO [main] [] mbxmgr - Mailbox 63 account 26caa60d-4c2e-4d38-8c07-62cd5c9828df LOADED

==> zmconfigd.log <==
2011-10-17 10:58:00,446 zmconfigd CRITICAL [27438-MainThread] Tracking service snmp
2011-10-17 10:58:00,447 zmconfigd WARNING [27438-MainThread] Watchdog: service snmp now available for watchdog.
2011-10-17 10:58:00,540 zmconfigd CRITICAL [27438-MainThread] Tracking service spell
2011-10-17 10:58:00,542 zmconfigd WARNING [27438-MainThread] Watchdog: service spell now available for watchdog.

==> mailbox.log <==
2011-10-17 10:58:02,130 INFO [main] [] zimlet - Loaded class com.zimbra.cs.zimlet.handler.NANPHandler
2011-10-17 10:58:02,134 INFO [main] [] zimlet - Loaded class com.zimbra.cs.zimlet.handler.RegexHandler
2011-10-17 10:58:02,488 INFO [main] [] mailop - Adding Message: id=383660, Message-ID=<2-1492071-1dFL6JZruoYFbr4Zru4Kz@senderbr48.expressoemail.com .br>, parentId=-1, folderId=4, folderName=Junk.
2011-10-17 10:58:02,629 WARN [main] [] store - Destination file exists. Backing up to /opt/zimbra/store/0/63/msg/93/383660-537800.msg.bak
2011-10-17 10:58:02,629 WARN [main] [] store - /opt/zimbra/store/0/63/msg/93/383660-537800.msg.bak already exists. Deleting to make room for new backup file
2011-10-17 10:58:02,768 FATAL [main] [] system - Unable to commit database transaction. Forcing server to abort.
com.zimbra.common.service.ServiceException: system failure: committing database transaction
ExceptionId:main:1318856282767:98c5d8ee1d03534c
Code:service.FAILURE



If anyone can help me, thank you!