fail in my opmanager

1. i have my opmanager in a virtual machine
when i try to start the opmanager the aplication send me the follow menssage

Process : MapFE                          [ Started ]
Process : NmsMainFE                      [ Started ]
Process : TopoFE                         [ Started ]
Process : EventFE                        [ Started ]
Verifying connection with web server ... verified

OpManager modules started successfully

Please connect your client to the web server on port: 80 as http://localhost:80

java.lang.OutOfMemoryError: GC overhead limit exceeded
Dumping heap to java_pid2844.hprof ...
Heap dump file created [339625805 bytes in 6.405 secs]
OutOfMemoryError: Throws UnCaughtException
OutOfMemoryError: Total Jvm Heap = 355 MB
OutOfMemoryError: Free Jvm Heap = 78 MB
OutOfMemoryError: Used Jvm Heap = 276 MB
OutOfMemoryError: ThreadDump Generated successfully

Trying to Shutdown OpManager

Schedulers Stopped successfully

All Shut Down Observers Notified

after wuen i try to start opmanager the aplication send me

Port 162 needed for receiving traps has beed occupied. Please free the port. 2
Windows Server 2008
inside addon check

This OpManager has been licensed to SHOCKIE.

Starting AdventNet WebNMS "Primary" Server Modules, please wait

WARNING : Traps cannot be received on port : 162
Process : StartTelnetClient              [ Started ]
Process : CmdbandChangesProcess          [ Started ]
Process : OpManagerStatusProcess         [ Started ]
Process : NetFlowProcess                 [ Started ]
Process : AuthMgr                        [ Started ]
Process : DataMgmtRPI                    [ Started ]
Process : NCMProcess                     [ Started ]
Process : NmsPolicyMgr                   [ Started ]
Process : AppManagerProcess              [ Started ]
Process : DataCollectionRate             [ Started ]
Process : NmsAuthManager                 [ Started ]
Process : UserConfigProcess              [ Started ]
Process : DBServer                       [ Started ]
Process : NmsAuthenticationManager       [ Started ]
Process : CLIFactoryBinder               [ Started ]
Process : MapServerBE                    [ Started ]
Process : OpUtilsProcess                 [ Started ]
Process : BenchMarkdata                  [ Started ]
Process : RunJSPModule                   [ Started ]
Process : LocaleDBModification           [ Started ]
Process : EventMgr                       [ Started ]
Process : OpManagerProcess               [ Started ]
Process : Collector                      [ Started ]
java.lang.OutOfMemoryError: GC overhead limit exceeded
Dumping heap to java_pid5492.hprof ...
Heap dump file created [337646202 bytes in 6.199 secs]

how i can fis this problem

2.   when i obtain the database backup my file is over 2gb but when i try to restar this database the program send me th follow menssage

C:\ManageEngine\OpManager\bin\backup>RestoreDB.bat Backup_Pgsql_mar4_165220_1130
0.zip
********************************************************
*   Warning!!! Attempting to restore the data !!!      *
*   This will result in loosing your current data!!!   *
*   Press Ctl+c to quit the operation.                 *
********************************************************
Press any key to continue . . .

Extracting property file please wait .....

Extraction completed.
file:C:\ManageEngine\OpManager\conf\ui.properties
[OpManagerUtil] COLUMNSTORE INDEX set is false
NetFlow Plug-In is not installed

Please wait ! Trying to start database server .....
Successfully started database server.

Extracting zip file please wait .....

jdbc.RestoreException: Invalid Backup file.
        at jdbc.AbstractRestoreDB.extractZipFile(AbstractRestoreDB.java:178)
        at jdbc.AbstractRestoreDB.restoreDB(AbstractRestoreDB.java:87)
        at jdbc.AbstractRestoreDB.doRestore(AbstractRestoreDB.java:423)
        at jdbc.RestoreBackup.restoreDB(RestoreBackup.java:81)
        at jdbc.RestoreBackup.main(RestoreBackup.java:203)
Caused by: java.util.zip.ZipException: error in opening zip file
        at java.util.zip.ZipFile.open(Native Method)
        at java.util.zip.ZipFile.<init>(Unknown Source)
        at java.util.zip.ZipFile.<init>(Unknown Source)
        at jdbc.AbstractRestoreDB.extractZipFile(AbstractRestoreDB.java:150)
        ... 4 more

Press any key to continue . . .