If you setting up an new WAS Node/Cell with a own Deployment Manager configuration (installation) you can easily import the resource declarations (JDBC-Resources,Data Sources) from an already working WAS Installation to the newly created WAS Node/Cell/Profile.
1. Import LTPA-Keys to new Cell
2. Copy over /"Profile_Path"/config/cells/"Cell_Name"/resources.xml to the new installation
2.1 Ensure that all driver classes are located as noted in the resources.xml.
3. Extract the authDataEntries-Tags from security.xml and copy them to the security.xml of the newly created WAS Cell/Node/Profile.
The passwords in security.xml are XOR-encoded. You need the same LTPA-Keys to decode them.