Server Socket unable to write

Hi friends,
I have a stock server application and clinet.i send latest stock values to all the JAVA bases clients.My problem is,after some time, UL clients are not getting any values from server and server stack trace gives following values:
"LobbyUpdater" prio=1 tid=0x824ebd0 nid=0x727d runnable [0x6a505000..0x6a505870]
at java.net.SocketOutputStream.socketWrite(Native Method)
at java.net.SocketOutputStream.write(SocketOutputStream.java:91)
at java.io.ObjectOutputStream.drain(ObjectOutputStream.java:1458)
at java.io.ObjectOutputStream.writeUTFBody(ObjectOutputStream.java:785)
at java.io.ObjectOutputStream.outputString(ObjectOutputStream.java:729)
at java.io.ObjectOutputStream.checkSubstitutableSpecialClasses(ObjectOutputStream.java:446)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:356)
at java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1822)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:475)
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1209)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:361)
at java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1822)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:475)
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1209)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:361)
at java.io.ObjectOutputStream.outputArray(ObjectOutputStream.java:1093)
at java.io.ObjectOutputStream.checkSubstitutableSpecialClasses(ObjectOutputStream.java:451)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:356)
at java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1822)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:475)
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1209)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:361)
at java.io.ObjectOutputStream.outputArray(ObjectOutputStream.java:1093)
at java.io.ObjectOutputStream.checkSubstitutableSpecialClasses(ObjectOutputStream.java:451)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:356)
at java.io.ObjectOutputStream.outputClassFields(ObjectOutputStream.java:1822)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:475)
at java.io.ObjectOutputStream.outputObject(ObjectOutputStream.java:1209)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:361)
at com.cysphere.core.ctcontroller.bo.AbsMsgProcessor.sendResponse(Unknown Source)
at com.cysphere.core.ctcontroller.bo.MsgSender.sendMessage(Unknown Source)
at com.cysphere.core.ctcontroller.util.BridgeServerMsgUtil.sendLobbyInfoToBridge(BridgeServerMsgUtil.java:39)
at com.cysphere.core.ctcontroller.tournament.TournamentManager$LobbyUpdater.sendUIMessages(TournamentManager.java:288
Its keeps waiting at java.net.SocketOutputStream.socketWrite(Native Method)
forever and socket write never returns back.
Hope someone to put some light on this deadlock.(y can this happen??)
One more query:
What happens if server is contineously writing object message on socket as
oo.writeObject(o);//oo is ObjectOutputStream
oo.flush();
oo.reset();
but client is not reading it contineously or stuck somewhere???
what il be the behaviour of clinet and server in these circumstances??
All kind of suggestions/advise/briefing on topic will be wecome
thanks
kumar vinit

If the write method blocks its most likely because the client has stopped reading and all the buffers in the TCP stack are full. This is why you need separate threads for read and write, both can block.

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Depends.. The underlying native APIs usually allow for a variety of options, and therefore so does java..
- You can set the serversocket to be non-blocked, that is, you call accept and it'll immediately return, with a client socket or without, if you do this inside a loop then the loop can be very hard on your processor as you're 'busy-waiting'.
- You can set the timeout on the serversocket to a few seconds or so, after which the call will return without a client socket, or it will return before that timeout, with a client socket.
- You can screw all sockets (and other activities that you're waiting for) inside a poll() or select() like call, which will only return once the state on one of the sockets or events changes, and you can also give this call a timeout value.
All of these have their pendants in the java language, and I know how, but I'm not going to tell you, as this is the 'Advanced Language Topics' Forum, and not the 'I'm a scipt-kiddie with the need to write yet another server' Forum. I'm not going to do your homework. You should look it up yourself.

Error in LSMW Unable to write to file 'C:\ZSIGCO_CP_ZSIG

Hello,
In the Step 9 'READ DATA' I get the Error: 'Unable to write to file 'C:\ZSIGCO_CP_ZSIGCO_CP_ZSIGCO_CP.lsmw.read'
I do not know what the Problem is and how should I solve this Problem.?
Can any body help me sort out this Issue..?
Regards,
Deepak.

Thats right the file specification should look like this :-
ZXX - XX - ZXX Test
Files
Legacy Data          On the PC (Frontend)
Legacy Data          On the R/3 server (application server)
--   Imported Data        File for Imported Data (Application Server)
Imported Data                  ZXX_XX_ZXX.lsmw.read
--   Converted Data       File for Converted Data (Application Server)
Converted Data                 ZXX_XX_ZXX.lsmw.conv<<<----
destination file where to write
Wildcard Value       Value for Wildcard '*' in File Name
Reagrds
Dhirendra

Unable to write smartlist, error code 1060301

Hi Team Members,
we are trying to use Essbase Studio to create Essbase cube by using relational db tables.
while doing that we are getting following Error.
Note:_
we have tried it with partitioned table & Normal Tables bt result are same.
rational tables we are using contains varchar2 data type.
Hirerchy contains : 2 columns SourceID & FileID ---> datatype varchar2
Measure Hir Contains: 1 column duration ---> datatype varchar2
Environment:_
Essbase Studio (11.1.2.1)
Essbase server 11.1.2.1
Relational DB: Oracle 10g R2
eRROR:_
Specified smart list missing name NoData will be ignored
Specified smart list out-of-range name OutOfRange will be ignored
Record #3752 - Unable to write smartlist 4203, error code 1060301*
Deployment Log_
Member load for dimension RedPSHIR started at: Sep 22, 2011 12:25:38 PM PKT. Records processed: 2,163.
Member load for dimension RedPSMHir started at: Sep 22, 2011 12:25:50 PM PKT. Records processed: 3,751. Records rejected: 3. Member load elapsed time: 26 Seconds.
Data load started at: Sep 22, 2011 12:26:05 PM PKT. Data load elapsed time: 15 Seconds.
The error file is located on the server at: C:\Oracle\Middleware\EPMSystem11R1\products\Essbase\EssbaseStudio\Server\.\ess_japihome\data\TEST.Plan1_09-22-11_12-25-36.err
Failed to deploy Essbase cube.
Caused by: Failed to load data into database: Plan1.
Caused by: Cannot get async process state. Essbase Error(1042017): Network error: The client or server timed out waiting to receive data using TCP/IP. Check network connections. Increase the olap.server.netConnectRetry and/or olap.server.netDelay values in the essbase.properties. Restart the server and try again.
TEST.Plan1_09-22-11_12-25-36.err file output_
Specified smart list missing name NoData will be ignored
Specified smart list out-of-range name OutOfRange will be ignored
Record #3752 - Unable to write smartlist 4203, error code 1060301
Regards,
Alee

Hi guys,
I think the issue was due to using varchar2 datatype column (duration) for measure Hirerchy.
after converting it into number (using view option in rational DB) & doing the whole process again. it works fine
Reference section (Note):
rational tables we are using contains varchar2 data type.
Hirerchy contains : 2 columns SourceID & FileID ---> datatype varchar2
Measure Hir Contains: 1 column duration ---> datatype varchar2
Regards,
Alee

Server Socket unable to write

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