I can no longer get a full backup on the system:

Here's the report I get. I would appreciate any help in explaining:

Server: myserver.com

Label: full-20100623.000007.064
Type: full
Status: completed (with errors)
Started: Tue, 2010/06/22 20:00:07.064 EDT
Ended: Wed, 2010/06/23 02:54:32.869 EDT
Redo log sequence range: 2877 .. 2877
Number of accounts: 52
Number of errors: 3


ERRORS

account1@myserver.com: system failure: getting map of message id to blob digest
com.zimbra.common.service.ServiceException: system failure: getting map of message id to blob digest
ExceptionId:FullBackupThread:1277275671880:79106c4 9fc4e6bd1
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:251)
at com.zimbra.cs.db.DbBackup.getBlobDigestMap(DbBacku p.java:223)
at com.zimbra.cs.backup.BackupAccountSession$BlobDige sts.preload(BackupAccountSession.java:500)
at com.zimbra.cs.backup.BackupAccountSession.loadBlob DigestMap(BackupAccountSession.java:463)
at com.zimbra.cs.backup.FileBackupTarget$BackupAcctSe ssion.storeBlobsBeforeMaintenanceMode(FileBackupTa rget.java:1393)
at com.zimbra.cs.backup.BackupAccountSession.startFul lBackup(BackupAccountSession.java:131)
at com.zimbra.cs.backup.BackupSet.startFullBackup(Bac kupSet.java:386)
at com.zimbra.cs.backup.FileBackupTarget$FileBackupSe t.startFullBackup(FileBackupTarget.java:954)
at com.zimbra.cs.backup.BackupManager.doBackupFull(Ba ckupManager.java:815)
at com.zimbra.cs.backup.BackupManager$FullBackupThrea d.run(BackupManager.java:222)
Caused by: com.mysql.jdbc.exceptions.MySQLNonTransientConnect ionException: Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.io.EOFException

STACKTRACE:

java.io.EOFException
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1913 )
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO. java:2357)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.ja va:2803)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.ja va:812)
at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1295)
at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.ja va:2262)
at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:4 39)
at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate (MysqlIO.java:1970)
at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java :1387)
at com.mysql.jdbc.ServerPreparedStatement.serverExecu te(ServerPreparedStatement.java:1186)
at com.mysql.jdbc.ServerPreparedStatement.executeInte rnal(ServerPreparedStatement.java:685)
at com.mysql.jdbc.PreparedStatement.executeQuery(Prep aredStatement.java:1262)
at org.apache.commons.dbcp.DelegatingPreparedStatemen t.executeQuery(DelegatingPreparedStatement.java:20 5)
at com.zimbra.cs.db.DbBackup.getBlobDigestMap(DbBacku p.java:210)
at com.zimbra.cs.backup.BackupAccountSession$BlobDige sts.preload(BackupAccountSession.java:500)
at com.zimbra.cs.backup.BackupAccountSession.loadBlob DigestMap(BackupAccountSession.java:463)
at com.zimbra.cs.backup.FileBackupTarget$BackupAcctSe ssion.storeBlobsBeforeMaintenanceMode(FileBackupTa rget.java:1393)
at com.zimbra.cs.backup.BackupAccountSession.startFul lBackup(BackupAccountSession.java:131)
at com.zimbra.cs.backup.BackupSet.startFullBackup(Bac kupSet.java:386)
at com.zimbra.cs.backup.FileBackupTarget$FileBackupSe t.startFullBackup(FileBackupTarget.java:954)
at com.zimbra.cs.backup.BackupManager.doBackupFull(Ba ckupManager.java:815)
at com.zimbra.cs.backup.BackupManager$FullBackupThrea d.run(BackupManager.java:222)


** END NESTED EXCEPTION **



Last packet sent to the server was 9163 ms ago.

Query being executed when exception was thrown:

com.mysql.jdbc.ServerPreparedStatement[24074] - SELECT id, mod_content, blob_digest FROM mboxgroup38.mail_item WHERE mailbox_id = 138
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO. java:2515)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.ja va:2803)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.ja va:812)
at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1295)
at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.ja va:2262)
at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:4 39)
at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate (MysqlIO.java:1970)
at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java :1387)
at com.mysql.jdbc.ServerPreparedStatement.serverExecu te(ServerPreparedStatement.java:1186)
at com.mysql.jdbc.ServerPreparedStatement.executeInte rnal(ServerPreparedStatement.java:685)
at com.mysql.jdbc.PreparedStatement.executeQuery(Prep aredStatement.java:1262)
at org.apache.commons.dbcp.DelegatingPreparedStatemen t.executeQuery(DelegatingPreparedStatement.java:20 5)
at com.zimbra.cs.db.DbBackup.getBlobDigestMap(DbBacku p.java:210)
... 8 more

account2@myserver.com:: system failure: getting database connection
com.zimbra.common.service.ServiceException: system failure: getting database connection
ExceptionId:FullBackupThread:1277275676414:79106c4 9fc4e6bd1
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:251)
at com.zimbra.cs.db.DbPool.getConnection(DbPool.java: 234)
at com.zimbra.cs.backup.BackupAccountSession.startFul lBackup(BackupAccountSession.java:125)
at com.zimbra.cs.backup.BackupSet.startFullBackup(Bac kupSet.java:386)
at com.zimbra.cs.backup.FileBackupTarget$FileBackupSe t.startFullBackup(FileBackupTarget.java:954)
at com.zimbra.cs.backup.BackupManager.doBackupFull(Ba ckupManager.java:815)
at com.zimbra.cs.backup.BackupManager$FullBackupThrea d.run(BackupManager.java:222)
Caused by: com.mysql.jdbc.exceptions.MySQLNonTransientConnect ionException: Server connection failure during transaction. Due to underlying exception: 'java.net.SocketException: java.net.ConnectException: Connection refused'.

** BEGIN NESTED EXCEPTION **

java.net.SocketException
MESSAGE: java.net.ConnectException: Connection refused

STACKTRACE:

java.net.SocketException: java.net.ConnectException: Connection refused
at com.mysql.jdbc.StandardSocketFactory.connect(Stand ardSocketFactory.java:156)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
at com.mysql.jdbc.Connection.createNewIO(Connection.j ava:2769)
at com.mysql.jdbc.Connection.<init>(Connection.java:1 531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonReg isteringDriver.java:266)
at java.sql.DriverManager.getConnection(DriverManager .java:525)
at java.sql.DriverManager.getConnection(DriverManager .java:140)
at org.apache.commons.dbcp.DriverManagerConnectionFac tory.createConnection(DriverManagerConnectionFacto ry.java:97)
at org.apache.commons.dbcp.PoolableConnectionFactory. makeObject(PoolableConnectionFactory.java:300)
at org.apache.commons.pool.impl.GenericObjectPool.bor rowObject(GenericObjectPool.java:816)
at org.apache.commons.dbcp.PoolingDataSource.getConne ction(PoolingDataSource.java:140)
at com.zimbra.cs.db.DbPool.getConnection(DbPool.java: 225)
at com.zimbra.cs.backup.BackupAccountSession.startFul lBackup(BackupAccountSession.java:125)
at com.zimbra.cs.backup.BackupSet.startFullBackup(Bac kupSet.java:386)
at com.zimbra.cs.backup.FileBackupTarget$FileBackupSe t.startFullBackup(FileBackupTarget.java:954)
at com.zimbra.cs.backup.BackupManager.doBackupFull(Ba ckupManager.java:815)
at com.zimbra.cs.backup.BackupManager$FullBackupThrea d.run(BackupManager.java:222)


** END NESTED EXCEPTION **


Attempted reconnect 3 times. Giving up.
at com.mysql.jdbc.SQLError.createSQLException(SQLErro r.java:888)
at com.mysql.jdbc.Connection.createNewIO(Connection.j ava:2838)
at com.mysql.jdbc.Connection.<init>(Connection.java:1 531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonReg isteringDriver.java:266)
at java.sql.DriverManager.getConnection(DriverManager .java:525)
at java.sql.DriverManager.getConnection(DriverManager .java:140)
at org.apache.commons.dbcp.DriverManagerConnectionFac tory.createConnection(DriverManagerConnectionFacto ry.java:97)
at org.apache.commons.dbcp.PoolableConnectionFactory. makeObject(PoolableConnectionFactory.java:300)
at org.apache.commons.pool.impl.GenericObjectPool.bor rowObject(GenericObjectPool.java:816)
at org.apache.commons.dbcp.PoolingDataSource.getConne ction(PoolingDataSource.java:140)
at com.zimbra.cs.db.DbPool.getConnection(DbPool.java: 225)
... 5 more


account3@myserver.com:: system failure: getting database connection
com.zimbra.common.service.ServiceException: system failure: getting database connection
ExceptionId:FullBackupThread:1277275684425:79106c4 9fc4e6bd1
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:251)
at com.zimbra.cs.db.DbPool.getConnection(DbPool.java: 234)
at com.zimbra.cs.backup.BackupAccountSession.startFul lBackup(BackupAccountSession.java:125)
at com.zimbra.cs.backup.BackupSet.startFullBackup(Bac kupSet.java:386)
at com.zimbra.cs.backup.FileBackupTarget$FileBackupSe t.startFullBackup(FileBackupTarget.java:954)
at com.zimbra.cs.backup.BackupManager.doBackupFull(Ba ckupManager.java:815)
at com.zimbra.cs.backup.BackupManager$FullBackupThrea d.run(BackupManager.java:222)
Caused by: com.mysql.jdbc.exceptions.MySQLNonTransientConnect ionException: Server connection failure during transaction. Due to underlying exception: 'java.net.SocketException: java.net.ConnectException: Connection refused'.

** BEGIN NESTED EXCEPTION **

java.net.SocketException
MESSAGE: java.net.ConnectException: Connection refused

STACKTRACE:

java.net.SocketException: java.net.ConnectException: Connection refused
at com.mysql.jdbc.StandardSocketFactory.connect(Stand ardSocketFactory.java:156)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
at com.mysql.jdbc.Connection.createNewIO(Connection.j ava:2769)
at com.mysql.jdbc.Connection.<init>(Connection.java:1 531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonReg isteringDriver.java:266)
at java.sql.DriverManager.getConnection(DriverManager .java:525)
at java.sql.DriverManager.getConnection(DriverManager .java:140)
at org.apache.commons.dbcp.DriverManagerConnectionFac tory.createConnection(DriverManagerConnectionFacto ry.java:97)
at org.apache.commons.dbcp.PoolableConnectionFactory. makeObject(PoolableConnectionFactory.java:300)
at org.apache.commons.pool.impl.GenericObjectPool.bor rowObject(GenericObjectPool.java:816)
at org.apache.commons.dbcp.PoolingDataSource.getConne ction(PoolingDataSource.java:140)
at com.zimbra.cs.db.DbPool.getConnection(DbPool.java: 225)
at com.zimbra.cs.backup.BackupAccountSession.startFul lBackup(BackupAccountSession.java:125)
at com.zimbra.cs.backup.BackupSet.startFullBackup(Bac kupSet.java:386)
at com.zimbra.cs.backup.FileBackupTarget$FileBackupSe t.startFullBackup(FileBackupTarget.java:954)
at com.zimbra.cs.backup.BackupManager.doBackupFull(Ba ckupManager.java:815)
at com.zimbra.cs.backup.BackupManager$FullBackupThrea d.run(BackupManager.java:222)


** END NESTED EXCEPTION **


Attempted reconnect 3 times. Giving up.
at com.mysql.jdbc.SQLError.createSQLException(SQLErro r.java:888)
at com.mysql.jdbc.Connection.createNewIO(Connection.j ava:2838)
at com.mysql.jdbc.Connection.<init>(Connection.java:1 531)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonReg isteringDriver.java:266)
at java.sql.DriverManager.getConnection(DriverManager .java:525)
at java.sql.DriverManager.getConnection(DriverManager .java:140)
at org.apache.commons.dbcp.DriverManagerConnectionFac tory.createConnection(DriverManagerConnectionFacto ry.java:97)
at org.apache.commons.dbcp.PoolableConnectionFactory. makeObject(PoolableConnectionFactory.java:300)
at org.apache.commons.pool.impl.GenericObjectPool.bor rowObject(GenericObjectPool.java:816)
at org.apache.commons.dbcp.PoolingDataSource.getConne ction(PoolingDataSource.java:140)
at com.zimbra.cs.db.DbPool.getConnection(DbPool.java: 225)
... 5 more