Thanks for your response.
I am deploying the web application through the web console and in the libraries filed I put "./postgresql-8.2-505.jdbc2ee.jar" .
The JAR is inthe "domain1/lib/applibs" but the error persist:
Caused by: Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: No suitable driver found for jdbc:postgresql://10.116.12.227:5432/subscriptions
Error Code: 0
at oracle.toplink.essentials.exceptions.DatabaseException.sqlException(DatabaseException.java:305)
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