Client performance.

hallo,

i have a big problem with the client performance on Oracle. The application is able to use MS-SQL-Server or Oracle (8.0.5 or 8.1.5) as database.
A sample request (150 select statements) takes on SQL-Server 0.8s (incl. application time). The same request on Oracle takes >4.0s. The data for this test should be cached, because i have tried this more than one (and there IS no disk activity).

The NT performance tool shows that the Oracle server uses max. 30% of CPU. The complete CPU usage ist 100% (client and server are at the same machine).

On the oter site the SQL-Server: A small path between CPU usage of the Server and the complete CPU usage. So the client doesn't take much time.

I can't find any switch to speed up the Oracle network performance. We have tried to use OCI in place of ODBC, but without an important change.

Does anyone knows a solution for such a problem?

My network configuration:

tnsnames.ora:

	DEMO.UNITY =
	  (DESCRIPTION =


	    (ADDRESS = (PROTOCOL = IPC)(Key = DEMO))

	    (CONNECT_DATA = (SID = DEMO)(GLOBAL_DBNAME = DEMO))

	  )

listener.ora:
	USE_PLUG_AND_PLAY_LISTENER = ON

	LISTENER =
	  (ADDRESS_LIST =


	    (ADDRESS = (PROTOCOL = IPC)(KEY = DEMO))

	  )

	SID_LIST_LISTENER =
	  (SID_LIST =


	    (SID_DESC =

	      (GLOBAL_DBNAME = demo.unity)
	      (SID_NAME = DEMO)
	      (PRESPAWN_MAX = 10)
	      (PRESPAWN_LIST =
	        (PRESPAWN_DESC =
	          (PROTOCOL = IPC)
	          (POOL_SIZE = 5)
	          (TIMEOUT = 0)
	        )
	      )
	    )
	  )

sqlnet.ora:
	DISABLE_OOB = ON
	NAMES.DEFAULT_DOMAIN = unity
	BREAK_POLL_SKIP = 100
	SQLNET.EXPIRE_TIME = 1
	SQLNET.ENCRYPTION_SERVER = requested
	SQLNET.ENCRYPTION_CLIENT = requested
	NAMES.DIRECTORY_PATH= (TNSNAMES)


Thanks,
	Marcus