Padmaja Prasad

The company is located in:
Goregaon (East),Mumbai

If you are interested please send me the resume.

Thanks,
Padmaja.

Hi,

Our company is looking for Java developers with atleast three years experiance in Java & Oracle. This is and urgent requirement. So if you willing to work in Mumbai and have a strong knowledge of Java & Oracle please send your resumes to [email protected]

Thanks,
Padmaja.

Originally posted by Nathan Pruett:
Good to know you got it to work!

Still... it's weird that no exception printed out when the server died.

Yeah.. it seems that something is killing the server very silently, that the server even doesn't know. We are not calling System.exit anywhere in the code, for this state of the server.

Thanks for all your help and time
Padmaja

I moved the server from win2K server to HP-UNIX server. Now the server works like a charm. It never crashed even for more repeated test runs.

I read somewhere that the windows will reset the TCP connection if there are more number of open sockets. Probably this may be the reason the server went down when running in Windows.

Padmaja

The server is bound to rmiregistry in the main() method. This is the code I put at the end to keep server alive.
try { while (true){ try{ Thread.currentThread().sleep (5000L); }catch (InterruptedException e) {} } } catch (Exception ex) { System.err.println("Exiting Frequency Keeper Server"); ex.printStackTrace(); }

Thanks a lot..
Padmaja

This is the code that starts the Server.
System.out.println("getting instance of frequency keeper"); KeyFrequencyKeeper keeper = KeyFrequencyKeeper.getInstance( regionCode ); int regionIndex = getRegionIndex( regionCode ); url = null; port = 0; name = null; url = MatchConfig.PRIMARY_FREQUENCY_REGION_X_SERVER_URL[ regionIndex ]; port = MatchConfig.PRIMARY_FREQUENCY_SERVER_BASEPORT + regionIndex; name = MatchConfig.PRIMARY_FREQUENCY_SERVER_NAME + regionCode; keeper.initialize(); if( !imageBuildMode && !consolidationMode ) { //this condition is true for this particular case. System.out.println("binding to: " + url + port + name); System.out.println("creating the rmi registry"); java.rmi.registry.Registry Registry = java.rmi.registry.LocateRegistry.createRegistry( port ); System.out.println("registering instance with rmi registry"); Naming.rebind( url + port + name, keeper); System.out.println("Done initializing key frequency keeper"); } else if( !imageBuildMode ) { //is not true System.out.println("frequency keeper is in consolidation mode"); System.out.println("exiting..., and restarting"); int regionNumber = regionIndex + 1; String regionNumberS = (regionNumber < 10 ? "0" + String.valueOf( regionNumber ) : String.valueOf( regionNumber )); Executor.doIt( MatchConfig.FREQUENCY_KEEPER_RUN_COMMAND + " " + regionNumberS ); System.exit( 0 ); } else { // is not true. System.out.println("frequency keeper is in image build"); System.out.println("exiting"); System.exit( 0 ); } } catch( Exception e ) { System.err.println( new java.util.Date() + ": exception occured while initializing frequency keeper for region " + region); e.printStackTrace(); } System.out.println("Ready to serve candidates"); }

I put an infinite loop after the last print statement to keep server alive. That didn't help, so I removed that.

Thanks
Padmaja
[ June 23, 2004: Message edited by: Padmaja Prasad ]

Originally posted by Nathan Pruett:
Is the server throwing this exception or the client?

Do you mean the server is crashing when you say it "exits from the running state"? Is the error message above the reason for the crash, is there a different error message, or is the server exiting normally?

Hi Nathan,
Thanks for the reply.
The exceptions are thrown by the client.
Yes..I meant the server crashing...The server is designed in such a way that it should exit only when user presses Ctl-C. But when this exception is thrown, server exits automatically.
In addition to the above exception following exceptions are also received.

Caused by: java.net.SocketException: Connection reset at java.net.SocketInputStream.read(SocketInputStream.java:168) at java.io.BufferedInputStream.fill(BufferedInputStream.java:183) at java.io.BufferedInputStream.read(BufferedInputStream.java:201) at java.io.DataInputStream.readByte(DataInputStream.java:331) at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:189)

At the server window, I am not getting any exception message at all.

Thanks
Padmaja
[ June 23, 2004: Message edited by: Padmaja Prasad ]

I have been running a rmi server instance that maintains a list of data in the memory. The registry is created inside the server code using locateRegistry. The client processes get the server instance and reads the data in memory through the server.

I get this wiered exception : java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is: java.net.SocketException: Connection reset at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:203) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:133) at com.emf1.dataserver.KeyFrequencyKeeper_Stub.getDUNSCounts(Unknown Source) at com.emf1.match.KeyFrequencyKeeperProxy.getKeyKQSs(KeyFrequencyKeeperProxy.java:303) at com.emf1.match.KeyGenerator.generateKeys(KeyGenerator.java:453)

This exception is also not stable. Sometimes all the records gets executed without any problem. But sometimes I get these exceptions for the same set of data. The period of time this exception occurs is also not stable. Inside the code we are not resetting or closing any connections... When this error occurs, the server process also exits from the running state. I have no idea why this is happening. I even put an infinite loop soon after the server is boud to the registry. The server exits even after putting that loop.

Both the server and client are running in win2k server. The JDK version is 1.4.2.

Pls help...
Thanks
Padmaja
[ June 22, 2004: Message edited by: Padmaja Prasad ]

Hi,
I need to access and update multiple instances of database and different types of databases(Sybase and Oracle) with in single tranaction. The DB access should be highly secured(i.e, the password of the DB schema shouldn't be accessible to anyone else). The number of database connections are really high(nearly 100 connections or schema per transaction). When a user gives an instruction to change a value, the application should update the value in all the database schemas. What is the most scalable way to do this? using DataSource(as in J2EE) or regular JDBC connections??
Thanks in advance
Padmaja
[ January 19, 2004: Message edited by: Padmaja Prasad ]

Where from the setProperty will get the values for the variables

Hi Andy,
It takes values from the request parameter. In this case the request param name should be the same as the bean property name.
Hope it helps
Padmaja.

Hi Andrew,
Thanks for the reply.
I found two classes(at last) with those names. They were in separate directories, but with the same name and package definition. Don't know how I missed it when I did a file search on windows??? Your immediate response really helped me.
Anyway I took the exam..but couldn't upload the assignment yet. I have already sent mail to them..still no response.
Thanks
Padmaja.

Hi,
I ran the javadoc from another machine...Now those additional classes are gone..
Thanks for the help
Padmaja

Hi Andrew,
Thanks for the reply. But I have No classes with these names in all my hard disk.
May be the javadoc is accessing more directories..
Is there any way to track them??
Thanks again
Padmaja

Another thing it is defining two methods like myInt() and myStr() and one constructor. I am totally confused..
Please reply me..
Thanks
Padmaja

Hi
I am taking the exam tomorrow morning. So I need to upload the assignment by today.
I have two annonymous inner classes inside my server GUI class. While generating javadoc for the server, I'm getting two additional class documentation namely MyClass.html and MyClass2.html. I have not defined any class with these names. Can I write in the readme.txt that these two files are corresponding to the inner classes defined in ServerGUI class??
Thanks in advance
Padmaja