Database connection variable is not well defined

The following error message is in SIL_InsertRowInRunTable.log in Informatica WorkflowLogs directory
Can someone help me to look where to start to troubleshoot?
Thanks
ERROR : TM_6292 : (4836|3912) Session task instance [SIL_InsertRowInRunTable]: TM_6193 [Error occured during expansion of DB connection parameters [Database connection name DataWarehouse for database connection variable $DBConnection_OLAP is not well defined.

hello ALL.
My DAC client and Informatica client is on windows and DAC server and Informatica is on Linux.
I am getting similar issue:
D:\OracleBI\DAC\ServerLog
12 SEVERE Wed Feb 18 14:22:43 PST 2009 Starting ETL Process.
13 SEVERE Wed Feb 18 14:22:48 PST 2009 Informatica Status Poll Interval new value : 20000(milli-seconds)
14 SEVERE Wed Feb 18 14:22:52 PST 2009 /d01/OracleBIApps/DAC/Informatica/parameters/input/FLAT FILE specified is not a currently existing directory
15 SEVERE Wed Feb 18 14:22:53 PST 2009 Request to start workflow : 'SILOS:SIL_InsertRowInRunTable' has completed with error code 7
16 SEVERE Wed Feb 18 14:22:54 PST 2009 ETL seems to have completed. Invoking shut down dispatcher after the notification from the last running task.
17 SEVERE Wed Feb 18 14:22:54 PST 2009 Finishing ETL Process.
18 SEVERE Wed Feb 18 14:22:54 PST 2009 MESSAGE:::Some steps failed.
EXCEPTION CLASS::: com.siebel.etl.engine.bore.SomeSessionsFailedException
I have made sure that everything that ED has mentioned, i have checked still can't resolve the issue.
in my WorkflowLogs/SIL_InsertRowInRunTable.log (according to this error, i have placed the required parameters files in the SrcFiles and LkpFiles. but still, the ETL process is being stuck at first step).
this is the error i found:
INFO : LM_36435 [Wed Feb 18 12:06:13 2009] : (25894|-1589191776) Starting execution of workflow [SIL_InsertRowInRunTable] in folder [SILOS] last saved by user [Administrator].
INFO : LM_44195 [Wed Feb 18 12:06:13 2009] : (25894|-1589191776) Workflow [SIL_InsertRowInRunTable] service level [SLPriority:5,SLDispatchWaitTime:1800].
INFO : LM_36388 [Wed Feb 18 12:06:14 2009] : (25894|-1589191776) Session task instance [SIL_InsertRowInRunTable] is waiting to be started.
INFO : LM_36682 [Wed Feb 18 12:06:16 2009] : (25894|-1589191776) Session task instance [SIL_InsertRowInRunTable]: started a process with pid [14937] on node [node01_osirhdev12.osius.com].
INFO : LM_36330 [Wed Feb 18 12:06:16 2009] : (25894|-1589191776) Session task instance [SIL_InsertRowInRunTable]: Execution started.
ERROR : VAR_27086 : (25894|-1578701920) Cannot find specified parameter file [d01/Informatica/PowerCenter8.1.1/server/infa_shared/SrcFiles/SILOS.SIL_InsertRowInRunTable.txt] for [session [SIL_InsertRowInRunTable.SIL_InsertRowInRunTable]].
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [TM_6793 Fetching initialization properties from the Integration Service. : (Wed Feb 18 12:06:23 2009)]
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [DISP_20305 The [Preparer] DTM with process id [14937] is running on node [node01_osirhdev12.osius.com].
: (Wed Feb 18 12:06:23 2009)]
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [PETL_24036 Beginning the prepare phase for the session.]
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [TM_6721 Started [Connect to Repository].]
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [TM_6722 Finished [Connect to Repository]. It took [0.24927] seconds.]
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [TM_6794 Connected to repository [PowerCenter] in domain [Domain_osirhdev12.osius.com] user [Administrator]]
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [TM_6721 Started [Fetch Session from Repository].]
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [TM_6722 Finished [Fetch Session from Repository]. It took [16.3948] seconds.]
INFO : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [TM_6793 Fetching initialization properties from the Integration Service. : (Wed Feb 18 12:06:40 2009)]
ERROR : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [CMN_1761 Timestamp Event: [Wed Feb 18 12:06:40 2009]]
ERROR : LM_36488 [Wed Feb 18 12:06:40 2009] : (25894|-1599681632) Session task instance [SIL_InsertRowInRunTable] : [PETL_24049 Failed to get the initialization properties from the master service process for the prepare phase [Session task instance [SIL_InsertRowInRunTable]: Unable to read variable definition from parameter file [d01/Informatica/PowerCenter8.1.1/server/infa_shared/SrcFiles/SILOS.SIL_InsertRowInRunTable.txt].] with error code [4].]
ERROR : LM_36320 [Wed Feb 18 12:06:42 2009] : (25894|-1589191776) Session task instance [SIL_InsertRowInRunTable]: Execution failed.
WARNING : LM_36331 : (25894|-1589191776) Session task instance [SIL_InsertRowInRunTable] failed and its "fail parent if this task fails" setting is turned on. So, Workflow [SIL_InsertRowInRunTable] will be failed.
ERROR : LM_36320 [Wed Feb 18 12:06:42 2009] : (25894|-1589191776) Workflow [SIL_InsertRowInRunTable]: Execution failed.
IF any one had similar issues, please reply to this.
Thanks

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carName
carModel etc..
I Know how to get this data into a javabean but i do not know if it is correct
Example
public class Car
      private Connection conn
      private String carID
      private String carName
      private String carModel
      /* getters and setters .....*/
      public Car get(String id) throws Exception {
            String sql = "SELECT * FROM Car WHERE carID = " + this.carID;
      //and so forth with deleting a car saving it etc...What i would like to know is what is a good standard of coding such a class to be thread safe
and use minimal resources?
the parameter would be in this as it would be the current class used by lots of clients
Edited by: -epoch- on Oct 28, 2008 5:33 AM

Database connection variable is not well defined

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