Details
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Bug
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Resolution: Won't Do
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Major
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None
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7.0.0.ER1
Description
If you have an Oracle UCP data source with such setup that the size of UCP pool is equal to the size of the JCA pool and there are enough threads obtaining/returning connections concurrently, it sometimes happens that when a thread tries to obtain a connection, JCA layer has a free connection in the pool, but UCP does not (because it seems that after returning a connection to JCA, the process of freeing the UCP connection runs asynchronously and takes some time to complete).
Because unlike the JCA layer, UCP driver doesn't wait until a connection is available, the getConnection() call fails with:
15:00:27,897 WARN [org.jboss.jca.core.connectionmanager.pool.strategy.PoolByCri] (EE-ManagedExecutorService-custom-Thread-10) IJ000604: Throwable while attempting to get a new connection: null: javax.resource.ResourceException: IJ031084: Unable to create connection at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:336) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:343) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:278) at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.createConnectionEventListener(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:1336) at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:501) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:633) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:605) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:603) at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:430) at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:761) at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:162) at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:73) at org.jboss.qa.ucp.tests.concurrent.MultipleConcurrentUsersTestCase.testConnection(MultipleConcurrentUsersTestCase.java:107) at org.jboss.qa.ucp.tests.concurrent.MultipleConcurrentUsersTestCase.lambda$test$1(MultipleConcurrentUsersTestCase.java:81) at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1626) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.glassfish.enterprise.concurrent.internal.ManagedFutureTask.run(ManagedFutureTask.java:141) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) at org.glassfish.enterprise.concurrent.ManagedThreadFactoryImpl$ManagedThread.run(ManagedThreadFactoryImpl.java:250) Caused by: java.sql.SQLException: Exception occurred while getting connection: oracle.ucp.UniversalConnectionPoolException: All connections in the Universal Connection Pool are in use at oracle.ucp.util.UCPErrorHandler.newSQLException(UCPErrorHandler.java:488) at oracle.ucp.util.UCPErrorHandler.throwSQLException(UCPErrorHandler.java:163) at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(PoolDataSourceImpl.java:943) at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(PoolDataSourceImpl.java:873) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:305) ... 21 more Caused by: oracle.ucp.UniversalConnectionPoolException: All connections in the Universal Connection Pool are in use at oracle.ucp.util.UCPErrorHandler.newUniversalConnectionPoolException(UCPErrorHandler.java:368) at oracle.ucp.util.UCPErrorHandler.throwUniversalConnectionPoolException(UCPErrorHandler.java:49) at oracle.ucp.util.UCPErrorHandler.throwUniversalConnectionPoolException(UCPErrorHandler.java:80) at oracle.ucp.util.UCPErrorHandler.throwUniversalConnectionPoolException(UCPErrorHandler.java:131) at oracle.ucp.common.UniversalConnectionPoolImpl.borrowConnectionWithoutCountingRequests(UniversalConnectionPoolImpl.java:321) at oracle.ucp.common.UniversalConnectionPoolImpl.borrowConnectionAndValidate(UniversalConnectionPoolImpl.java:168) at oracle.ucp.common.UniversalConnectionPoolImpl.borrowConnection(UniversalConnectionPoolImpl.java:143) at oracle.ucp.jdbc.JDBCConnectionPool.borrowConnection(JDBCConnectionPool.java:157) at oracle.ucp.jdbc.PoolDataSourceImpl.getConnection(PoolDataSourceImpl.java:931) ... 23 more
Attachments
Issue Links
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JBEAP-10171 (7.4.z) Certify Oracle 12c RAC Cluster Support with Oracle UCP
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- Closed
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