Oracle.DataAccess 2.112.2.0 ,oracleconnection create need 20 seconds?

Question

Everybody,
I want to use odp.net to connect the timesten in-memory database in vs2008 vc#.net. However, the creation of OracleConnection last 20 seconds.
Code:
Stopwatch sw = new Stopwatch(); sw.Start();
OracleConnection conn = new OracleConnection();//last 20 seconds
sw.Stop();
Console.WriteLinesw.ElapsedMilliseconds.ToString());
Could someone encounts the same problem? Or that condition is normal?
Thank you very much.

Answer 1

Hi,
The only thing that jumps out within your problem description is that connections are being increased every 5 minutes. Are you sure its every 5 minutes and not 3 minutes which is the timing interval used by the Connection Pool facility to perform connection pool maintenance. If this occurs even when the application is idle then you could be running into the following known issue filed against 11.2.0.1.0 and fixed in 11.2.0.1.2.
Bug 9711600 - CONNECTIONS INCREASE BEYOND MAX POOL SIZE EVERY 3 MINUTE
This is specific to using the option CommandBehavior.CloseConnection when calling execute reader. Are you using this option and then also closing the connection in code before the datareader object is closed, if so you may be hitting this bug. You can also generate an ODP trace at level 15 of the behavior and if you see negative pool counts, that is also a diagnostic that points to this bug.
This is fixed in 11.2.0.1.0 Patch 3 or later for x64. If you have support, I recommend you open a service request to verify if this is your issue and if a patch set may help you.
Regards
Jenny B.