Demantra workflow error Database internal error:ORA-29273: HTTP request failed

Hi Expert,

CT workflow Run Engine failure, the error information as following, it occurs not every time, it is random, what is the  possible reason?

Process ID: 801901
Schema ID: 1313
Schema name: ’’Run Engine - XXXX’’
Step ID: ’’Step6’’
Step name: ’’RunLinuxFcst_Profile1’’

Error description ’’Database internal error:ORA-29273: HTTP request failed’’

And in Worksheet interface many times CT occurred following error:
2013-12-16 17:21:04,660 CST [DataRunner_4409] ERROR query.run: ODPM-70016: Error loading query from Application Server:org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object com.demantra.applicationServer.appServerExceptions.ApplicationServerException: org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object at com.demantra.applicationServer.services.queryrun.QueryDataHandler.setQueryData(QueryDataHandler.java:292) at com.demantra.applicationServer.services.queryrun.QueryDataHandler.setWorksheetData(QueryDataHandler.java:269) at com.demantra.applicationServer.services.queryrun.BaseQueryDataHandler.loadQueryData(BaseQueryDataHandler.java:140) at com.demantra.applicationServer.services.queryrun.QueryDataHandler.loadQueryData(QueryDataHandler.java:148) at com.demantra.applicationServer.services.queryrun.BaseDataRunner.loadQueryData(BaseDataRunner.java:85) at com.demantra.applicationServer.services.queryrun.BaseDataRunner.setData(BaseDataRunner.java:70) at com.demantra.applicationServer.services.queryrun.ExtendedDataRunner.run(ExtendedDataRunner.java:107) at java.lang.Thread.run(Thread.java:662) Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Timeout waiting for idle object at org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:104) at com.demantra.applicationServer.pools.JDBCConnectionPool.getConnection(JDBCConnectionPool.java:260) at com.demantra.applicationServer.services.queryrun.StatementHandler.(StatementHandler.java:58) at com.demantra.applicationServer.services.queryrun.LoaderTask.(LoaderTask.java:58) at com.demantra.applicationServer.services.queryrun.LoaderTaskFactory.createQueueTask(LoaderTaskFactory.java:45) at com.demantra.common.queue.QueueTaskFactory.makeObject(QueueTaskFactory.java:29) at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:840) at com.demantra.applicationServer.services.queryrun.QueryDataLoader.loadData(QueryDataLoader.java:74) at com.demantra.applicationServer.services.queryrun.QueryDataHandler.setQueryData(QueryDataHandler.java:287) at com.demantra.applicationServer.services.queryrun.QueryDataHandler.setWorksheetData(QueryDataHandler.java:269) at com.demantra.applicationServer.services.queryrun.BaseQueryDataHandler.loadQueryData(BaseQueryDataHandler.java:140) at com.demantra.applicationServer.services.queryrun.QueryDataHandler.loadQueryData(QueryDataHandler.java:148) at com.demantra.applicationServer.services.queryrun.BaseDataRunner.loadQueryData(BaseDataRunner.java:85) at com.demantra.applicationServer.services.queryrun.BaseDataRunner.setData(BaseDataRunner.java:71) ... 2 more Caused by: