Any bugfix available? ODAC-Error is Item has already been added. Key in dictionary: '4118' Key bein

Mar 25, 2020 8:42AM

We have a Windows Service (64 bit) written in C# and .NET Framework 4.6.2 using ODAC 12.2.1100.

This service runs 24/7 and has to handle inserts into a database table using ORACLE Notifier.

Occassinally this service terminates with an exception:

System.ArgumentException: Item has already been added. Key in dictionary: '4118' Key being added: '4118'

at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add)

at System.Collections.Hashtable.SyncHashtable.Add(Object key, Object value)

at OracleInternal.ServiceObjects.NotificationBufferManager.PutNotificationOraBufPool(OracleCommunication orclCommunication)

at OracleInternal.ServiceObjects.NotificationHandler.ProcessBufferedNSDataPackets()

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

Windows Oracle Data Access Components (MOSC)