1) Goto EM console
2) Click OC4J_SOA->Administration Tab
3) Services->JDBC Resources
4) Create ‘Connection Pool’
a) Application ‘default’5) Create ‘Data Sources’
b) New Connection Pool say ‘MyDSCP’
c)Give Unique name, JDBC URL and Credentials
a) Application ‘default’ next ( Managed Data source . selected)6) Now Goto OC4J_SOA->Applications->default->DbAdapter->ConnectionFactories
b) Connection pool from List ‘MyDSCP’
c) Name ‘MyDS’, JNDI ‘jdbc/MyDS’, Connection Pool ‘MyDSCP’
a) Create choose default
b) JNDI Location ‘eis/jdbc/MyDS’
c) xADataSourceName =‘jdbc/MyDS
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For 11g SOA Refer:
http://download.oracle.com/docs/cd/E14571_01/integration.1111/e10231/life_cycle.htm#BABBEDBF