Cannot Execute Any UNIX Scripts From DAC

Hello,
I have a BI system implementation on Oracle Solaris Servers. Both DAC as well as Informatica are on single server. My business requirement calls for a frequent Data load into BI and Cache purge. i checked the forum and found so many articles on how to automate Purging of Cache Post ETL. I am successful in creating a script to purge the cache and i already tested it by executing the script manually. But when i call this script from a DAC task it fails. In order to make sure that there is no problem with the Script i created a simple script which just says "Hello" and tried to invoke the script from DAC task but failed.
All Task Batches
External Program Batch
EXTERNAL PROGRAM TASKTest:/PurgeCache/CachePurge.sh:(Source : FULL Target : FULL)
2013-10-13 17:40:38.015 Acquiring Resources
2013-10-13 17:40:38.015 Acquired Resources
2013-10-13 17:40:38.015 EXTERNAL PROGRAM TASKTest:/PurgeCache/CachePurge.sh:(Source : FULL Target : FULL) has started.
ANOMALY INFO::: Error while executing : EXTERNAL PROGRAM TASKTest:/PurgeCache/CachePurge.sh:(Source : FULL Target : FULL)
MESSAGE:::com.siebel.analytics.etl.execution.exceptions.ExternalProcessException:
EXCEPTION CLASS::: java.lang.RuntimeException
com.siebel.analytics.etl.etltask.GenericTaskImpl.doExecuteWithRetries(GenericTaskImpl.java:536)
com.siebel.analytics.etl.etltask.GenericTaskImpl.execute(GenericTaskImpl.java:372)
com.siebel.analytics.etl.etltask.GenericTaskImpl.execute(GenericTaskImpl.java:253)
com.siebel.analytics.etl.etltask.GenericTaskImpl.run(GenericTaskImpl.java:655)
com.siebel.analytics.etl.taskmanager.XCallable.call(XCallable.java:63)
java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
java.util.concurrent.FutureTask.run(Unknown Source)
java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
java.util.concurrent.FutureTask.run(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)
::: CAUSE :::
MESSAGE :::
EXCEPTION CLASS::: com.siebel.analytics.etl.execution.exceptions.ExternalProcessException
com.siebel.analytics.etl.etltask.ExternalProgramTask.doExecute(ExternalProgramTask.java:99)
com.siebel.analytics.etl.etltask.GenericTaskImpl.doExecuteWithRetries(GenericTaskImpl.java:477)
com.siebel.analytics.etl.etltask.GenericTaskImpl.execute(GenericTaskImpl.java:372)
com.siebel.analytics.etl.etltask.GenericTaskImpl.execute(GenericTaskImpl.java:253)
com.siebel.analytics.etl.etltask.GenericTaskImpl.run(GenericTaskImpl.java:655)
com.siebel.analytics.etl.taskmanager.XCallable.call(XCallable.java:63)
java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
java.util.concurrent.FutureTask.run(Unknown Source)
java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
java.util.concurrent.FutureTask.run(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)
(Number of retries : 1)
/PurgeCache/CachePurge.sh
2013-10-13 17:40:38.031 EXTERNAL PROGRAM TASKTest:/PurgeCache/CachePurge.sh:(Source : FULL Target : FULL) has finished execution with Failed status.
(Failed)
Any help would be greatly appreciated.
thanks and regards,
Sree

See the thread below:
Re: FDM - Script

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C:\Jacob\Work\Java\Test\Vaultus\Oracle9i\FunctionReturnsResultset>
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