Question

Multi File upload failing.

Asked by: humanonomics

We have a Java Application, With back end databse as Oracle 9i.

In one of the modules, there is an option for the Client to upload multiple files at the same time.

But when Client tries to upload 3 files at a time, only 2 files are successfully processed. For the failed one we found the following SQL exception. Also we have closed all the connections properly and tested here in our enviroenment and it is working fine.

We have configuration settings as {connectionTimeout 1800} {maxConnections 50} {minConnections 0} {reapTime 180} {unusedTimeout 850} {agedTimeout 0} {purgePolicy EntirePool}}

Exception:
java.sql.SQLException: Io exception: Socket is not connectedDSRA0010E: SQL State = null, Error Code = 17,002DSRA0010E: SQL State = null, Error Code = 17,002
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
at com.ibm.websphere.rsadapter.GenericDataStoreHelper.mapExceptionHelper(GenericDataStoreHelper.java:501)
at com.ibm.websphere.rsadapter.GenericDataStoreHelper.mapException(GenericDataStoreHelper.java:544)
at com.ibm.ws.rsadapter.spi.WSRdbDataSource.getPooledConnection(WSRdbDataSource.java:1038)
at com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.createManagedConnection(WSManagedConnectionFactoryImpl.java:958)
at com.ibm.ejs.j2c.poolmanager.FreePool.createManagedConnectionWithMCWrapper(FreePool.java:1617)
at com.ibm.ejs.j2c.poolmanager.FreePool.createOrWaitForConnection(FreePool.java:1409)
at com.ibm.ejs.j2c.poolmanager.PoolManager.reserve(PoolManager.java:2060)
at com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionManager.java:807)
at com.ibm.ejs.j2c.ConnectionManager.allocateConnection(ConnectionManager.java:583)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:333)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:302)

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Asked On
2008-07-03 at 21:36:37ID23538725
Topics

Oracle 9.x

,

Java Programming Language

,

Jakarta Struts

Participating Experts
1
Points
0
Comments
6

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Answers

 

by: melchkishorePosted on 2008-07-04 at 03:16:25ID: 21932127

Check for the database connection. I think some where the connection between application server and database are failing.

 

by: humanonomicsPosted on 2008-07-04 at 03:32:06ID: 21932170

Yep, offcourse the connection is failing, the code seems fine, and it works absolutely for 1 or 2 files, but when more then 2 files are being uploaded, the connection is getting dropped.

Any Ideas as to where all should I check for the connection settings ?

Thanks

 

by: melchkishorePosted on 2008-07-04 at 03:46:02ID: 21932225

If the data you are passing is more size than the specified size then also i think connection will be failed.

 

by: humanonomicsPosted on 2008-07-04 at 04:17:09ID: 21932339

Figured out the problem is more related to Web sphere Server then, to java and Oracle.

Its connection pool related problem. and hence closing this question and re-opening one in other zone.

 

by: melchkishorePosted on 2008-07-04 at 04:21:04ID: 21932358

I think i also gave the similar solution.

 

by: humanonomicsPosted on 2008-07-04 at 04:54:11ID: 21932496

nopes, you did not.

The problem is there are not enough connections available for the application.

The connections are not breaking, and there are no issues with the file size as well.

The db connection settings are not set properly, minConnections are set to 0, which ideally should not. And
agedTimeout is set to 0 ideally it should have value greater than reapTime, to have a better and stable performance.

Also increasing number of connections in the pool is another option, right now its set to 50, but our application has multiple points for connecting to database, and hence availablity of connections is an issue.

Thanks for the help, but your comments did not help solve this problem. We figured this out internally.


20120131-EE-VQP-002

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