Step 1: Change ORABPEL Schema Password
Execute the following steps,
$ sqlplus /nolog
SQL> CONNECT / AS SYSDBA
SQL> ALTER USER orabpel IDENTIFIED BY
E.g. ALTER USER orabpel IDENTIFIED BY welcome1

Step 2: Manually change password in Oracle Internet Directory (OID)
Login as (root) orcladmin in Oracle Directory Manager

Navigate to
OrclResourceName=ORABPEL,orclReferenceName=SERVICE_NAME,cn=IAS
Infrastructure Databases,cn=IAS,cn=Products,cn=OracleContext in the System Objects Frame. In the properties frame, input the new password across the orclpasswordattribute and click ‘Apply’.

Step 3: Change OC4J JDBC Datasources in OC4J_SOA

Login to Application Server Console as ‘oc4jadmin’ and navigate to OC4J_SOA. Click on Administration Tab
-> JDBC Resources

Click on BPELPM_CONNECTION_POOL link. In the credentials, provide this new password after clicking on ‘Use Cleartext Password’ radio button.