DBCPpool Active connections / DB down

Question

Greetings,
I seems to have a strange problem with DBCP and Oracle Connection poll mechanism. Here how it goes.
1. Get Database connection from DBCP BasicDataSource ds
ex :- conn = ds.getConnection()
2. Create a Statement from conn, conn.createStatement()
3. Get ResultSet from Statement stmt, stmt.executeSql(sql)
4. Now, Shutdown the oracle DB or disconnect the client from Server (remove the Lan cable)
5. execute one more SQL query like stmt.executeSql(sql)
6. SQL Exception is thrown at during point 5 , like 17002:I/O error
7. Exception is occurred if i close the connection, conn.close(); (Error Code 0 and message is connection is already closed)
8. At this point, DBCP is not returning the connection to ideal pool, means Connection still has active status and we can check the active status from BasicDataSource like bs.getNumActive()
I think its bug with DBCP if now I hope someone can to light to solve this issue.

Answer 1

I believe these are all processes on each DBs, could you please execute following query to get actual running proceses on your DB.
SELECT dbid,
DB_NAME(dbid) as DBName,
COUNT(dbid) as NumberOfConnections,
loginame as LoginName
FROM
sys.sysprocesses
WHERE
dbid > 0 and status='running'
GROUP BY
dbid, loginame
as there will be various status of processess exists on your DB.
1. does that makes a traffic load on my database? -- If the number of processes are pretty high, then apparantly this will be traffic load.
3. how can i stop / control getting that much number of active connection ? -- Try to get active connection by following command.
sp_who2 'Active'
Thanks
Manish
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