Backup Opmanager ver. 10200 under Ubuntu Server 10.04 fail

Hello!

When I wanted to make a backup, I got the following error:

root@snoopy:/opt/ManageEngine/OpManager/bin/backup# sh BackupDB.sh
file:/opt/ManageEngine/OpManager/conf/ui.properties
Please wait ! Reading tables from configuration ....
.......
.......
Please wait ! Backup DB started .....

/ 8 out of 1009 tables completed.

jdbc.BackupException: Error writing data to file.
        at jdbc.BackupDB.dumpDataToFile(BackupDB.java:156)
        at jdbc.AbstractBackupDB.backupDB(AbstractBackupDB.java:80)
        at jdbc.AbstractBackupDB.doBackup(AbstractBackupDB.java:438)
        at jdbc.BackUpImpl.backupDB(BackUpImpl.java:72)
        at jdbc.BackUpImpl.main(BackUpImpl.java:167)
Caused by: java.util.concurrent.ExecutionException: java.lang.Exception: Error while dumping data for table(s) -t stringdata10_12_2013 : /opt/ManageEngine/OpManager/pgsql/bin/pg_dump: /lib/libz.so.1: version `ZLIB_1.2.3.3' not found (required by /opt/ManageEngine/OpManager/pgsql/bin/pg_dump)
        at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
        at java.util.concurrent.FutureTask.get(Unknown Source)
        at jdbc.BackupDB.dumpDataToFile(BackupDB.java:153)
        ... 4 more
Caused by: java.lang.Exception: Error while dumping data for table(s) -t stringdata10_12_2013 : /opt/ManageEngine/OpManager/pgsql/bin/pg_dump: /lib/libz.so.1: version `ZLIB_1.2.3.3' not found (required by /opt/ManageEngine/OpManager/pgsql/bin/pg_dump)
        at jdbc.BackupDB$BackupDataThread.dumpDataUsingPgSqlDump(BackupDB.java:384)
        at jdbc.BackupDB$BackupDataThread.dumpData(BackupDB.java:250)
        at jdbc.BackupDB$BackupDataThread.call(BackupDB.java:219)
        at jdbc.BackupDB$BackupDataThread.call(BackupDB.java:190)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

What about libz.so? Ok. I run in bash:

root@snoopy:/opt/ManageEngine/OpManager/bin/backup# find / -name "*libz*" -print
/opt/ManageEngine/OpManager/pgsql/lib/libz.so.1
/opt/ManageEngine/OpManager/pgsql/extlib/libz.so.1.2.3.3
/opt/ManageEngine/OpManager/lib/libz.so.1.2.3.3
/opt/ManageEngine/OpManager/jre/lib/i386/libzip.so
/opt/ManageEngine/NetFlow/jre/lib/i386/libzip.so
/lib/libz.so.1
/lib/libz.so.1.2.3.3

What's wrong? Please help!