Hi Sube,

Is it possible that you have brought up two copies of the Network 
Server, listening on different ports? Connecting to the same database 
through two servers would cause the error you're seeing. Granular Derby 
locks (among other objects) aren't shared across servers. When the first 
server opens a connection to a database, it seizes exclusive access to 
all activity inside that database. That exclusive access persists until 
a user explicitly shuts down the database.

-Rick

sube singh wrote:

> Hi,
>  
> I have started the network server and create a database named 
> "server". I have taken a connection
> using JDBC Driver. After that tried to connection from same database 
> using ij tool or do its vice - versa . It gave the following error 
> message :
>  
> com.ibm.db2.jcc.c.SqlException: DB2 SQL error: SQLCODE: -1, SQLSTATE: 
> XJ040, SQLERRMC: 
> serverXJ040.CXSDB6:E:\Derby\frameworks\NetworkServer\bin\serverXSDB6.DFailed 
> to start database 'server', see the next exception for 
> details.Another instance of Derby may have already booted the 
> database E:\Derby\frameworks\NetworkServer\bin\server.(server log: 
> derby.log)
>  
> I hape that you will help me to understand the concept.
>  
> Thanks
>  
> Regards,
>  
> Sube Singh
>  
>  
>  
>
>