SYMPTOM:
When users apply a Query Band statement to the secondary instance in a multisource environment, the query band does not take effect in Strategy Developer 9.x and 10.x
Example:
When using the below query band example in a report pre-sql in a secondary database instance VLDB properties, nothing happens when running a report.
SET QUERY_BAND = 'ApplicationName=Strategy; ClientUser=!u; Source=PLM; Action=!o;' FOR SESSION;

However when switching the database instance to the primary one it appears in the report as follows:
SET QUERY_BAND = 'ApplicationName=Strategy; ClientUser=Administrator; Source=PLM ; Action=Program Review Milestones;' FOR SESSION;