Get and close connections many times in an EJB transaction drains pool

I have run into an odd bug in OC4J, and I'm hoping someone out there has the solution for it.
If I am inside an EJB transaction and call datasource.getConnection() and connection.close() more than (10 * max-connections) times, I can no longer get a connection from the datasource. Instead, I get this message:
java.sql.SQLException: Timed out waiting for an available connection after 60 seconds (connection pool reached max-connections which was set to 100)
at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].sql.OrionPooledDataSource.waitForConnection(OrionPooledDataSource.java:1012)
Note the message says that max-connections is set to 100, when it is in fact set to 10. The figure is always 10 times the max-connections value.
These connections are not being held, each is released before the next is fetched.
The OC4J output looks like:
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@d042d7 to pool (Pool size: 1)
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@702936 to pool (Pool size: 2)
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@1c0db6a to pool (Pool size: 3)
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@616f6c to pool (Pool size: 98)
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@19d83c7 to pool (Pool size: 99)
[java] com.evermind.sql.DriverManagerConnectionPoolDataSource@1d4e49a: Releasing connection com.evermind.sql.DriverManagerPooledConnection@16ad2fd to pool (Pool size: 1)
[java] null: Releasing connection com.evermind.sql.DriverManagerXAConnection@c1ec95 to pool (Pool size: 100)
[java] com.evermind.sql.OrionPooledDataSource@46bb9f: Cache timeout, closing connection (Pool size: 0)
[java] com.evermind.sql.OrionCMTDataSource@1c80063: Cache timeout, closing connection (Pool size: 99)
[java] com.evermind.sql.OrionCMTDataSource@1c80063: Cache timeout, closing connection (Pool size: 98)
[java] com.evermind.sql.OrionCMTDataSource@1c80063: Cache timeout, closing connection (Pool size: 2)
[java] com.evermind.sql.OrionCMTDataSource@1c80063: Cache timeout, closing connection (Pool size: 1)
[java] com.evermind.sql.OrionCMTDataSource@1c80063: Cache timeout, closing connection (Pool size: 0)
Since often the number of times a connection is required in my application is data driven, I really need a general solution for this problem. Can anyone make a suggestion?

We are facing the problem as given below.please advice.
We have developed an application wherein we are calling DB functions using Type-4 connections. We have deployed it on Oracle AS OC4J 10.1.2.0.2. When the function executes we get the below error in the log file.
When this error msg comes the application is unable to fetch the desired results.
How do we solve this issue?
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 13)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 12)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 11)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 10)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 9)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 8)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 7)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 6)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 5)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 4)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 3)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 2)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 1)
com.evermind.sql.OrionCMTDataSource@478e3074: Cache timeout, closing connection (Pool size: 0)
com.evermind.sql.OrionCMTDataSource@1326b07a: Cache timeout, closing connection (Pool size: 2)
com.evermind.sql.OrionCMTDataSource@1326b07a: Cache timeout, closing connection (Pool size: 1)
com.evermind.sql.OrionCMTDataSource@1326b07a: Cache timeout, closing connection (Pool size: 0)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 1)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 2)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 3)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 4)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 5)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 6)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 7)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 8)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 9)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 10)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 11)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 12)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 13)
null: Releasing connection oracle.jdbc.driver.T4CXAConnection@43bbf685 to pool (Pool size: 14)

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