JDBC adapter connection error

Error:-[ART.118.5042] Adapter Runtime (Connection): Unable to enable connection resource MU118_VNC_Logging_JDBC_Oracle_v1:MU118_VNC_Logging_JDBC_Oracle_Connection.[ART.118.5036] Adapter Runtime (Connection): Unable to configure connection manager.[ADA.1.204] Cannot connect to the database with DataSource class “oracle.jdbc.pool.OracleDataSource”.Io exception: The Network Adapter could not establish the connection
I am trying to create a jdbc adpater connection with following settings.I have already copied the classes12.zip and odbc.jar file in to webMethods lib directory and restarted the server.
Transaction type : local

DataSource class: oracle.jdbc.pool.OracleDataSource.
also tried with"oracle.jdbc.pool.OracleConnectionPoolDataSource".

Plz let me know incase i missed something…Thnx in advance.

it is must to restart ur system after setting envoirnment variables more details

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