Using SSO username/password in java portlet for Database Connection

Hi all,
We implemented java portlet with environment Oracle Application server 10.1.2 and Portal 10.1.4
At present we are picking the database username and password and connect string in properties and our
java class is reading the properties file and connecting to database to fetch the records.
Our idea is to not to pick the username/password and connect string from the properties file or
not to configure the datasource in data_source.xml.
Our Requirement is who ever login to the Portal(SSO) our java class should pick the sso username/password and
connect to database to fetch the record(s).
Because our database users are one to one mapped to sso user(s) of portal.
We request anyone to guide us how can we do it or suggest any suitable solution for our requirement.
Thanks
Dan Tey

I think this is a no-go, since you cannot retrieve a cleartext password from the OID if I'm correct.

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Using SSO username/password in java portlet for Database Connection

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