System.Data.OleDb.OleDbException (0x80004005): ORA-06413: Connection not open only when process run unattended


In my process I’m connecting to an Oracle db using OleDb provider and the following connection string: Provider= MSDAORA;Data Source=xxx;Password=xxx;User ID=xxx

It works fine on Studio but I’m getting this error when running the job on the unattended robot:

System.Data.OleDb.OleDbException (0x80004005): ORA-06413: Connection not open. Server stack trace: en System.Data.OleDb.OleDbConnectionInternal…ctor(OleDbConnectionString constr, OleDbConnection connection) en System.Data.OleDb.OleDbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject) en System.Data.ProviderBase.DbConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) en System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions) en System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) en System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions) en System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions) en System.Data.ProviderBase.DbConnectionInternal.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) en System.Data.OleDb.OleDbConnection.Open() en UiPath.Database.DatabaseConnection.OpenConnection() en UiPath.Database.DatabaseConnection.Initialize(String connectionString, String providerName) en UiPath.Database.DBConnectionFactory.Create(String connectionString, String providerName) en UiPath.Database.Activities.DatabaseConnect.<>c__DisplayClass15_0.<BeginExecute>b__0() en System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs) en System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink) Exception rethrown at [0]: en System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(Message reqMsg, Boolean bProxyCase) en System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(Object NotUsed, MessageData& msgData) en System.Func1.EndInvoke(IAsyncResult result) en UiPath.Database.Activities.DatabaseConnect.EndExecute(AsyncCodeActivityContext context, IAsyncResult result) en System.Activities.AsyncCodeActivity.System.Activities.IAsyncCodeActivity.FinishExecution(AsyncCodeActivityContext context, IAsyncResult result) en System.Activities.AsyncCodeActivity.CompleteAsyncCodeActivityData.CompleteAsyncCodeActivityWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)

Both machines have the same configuration and while using studio they are able to connect.

Any help?

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