By default, all lookups are secure as described in Security of lookups.
Although it is not recommended, it is possible to turn off the secure mode for a particular data source or connection factory.
Edit the /QIBM/ProdData/WebASE/ASE5/properties/j2c.properties file.
<!-- The security-properties are in a comment block. Uncomment to use --> <!-- <security-properties connectionFactoryJNDIName="myDataSource"> <secureMode>false</secureMode> </security-properties> -->
where myDataSource is the JNDI name of the data source or connection factory you want to run unsecure.