Looks like I was able to get past this issue. After going through all the steps outlined in the administrators guide & the wiki that JORDAN FRANCO referenced, I did the following:
- Setup SAP Authentication in the CMC. Authentication Application.
- Select SAP
- Created logical system connection to SAP BW by specifying appropriate settings.
- Imported Roles
- User Update: Manually updated all roles & aliases.
- Linked my Enterprise user to my SAP user in the CMC (Users and Groups).
- Select User. Right-click, Properties. Select "Assign Alias", and link the accounts.
- Enabled Authentication Type selection on BI launch Pad.
- Followed steps in BI Platform Administrators guide under section "To configure the BI launch pad logon screen".
- NOTE: I had to use WDeploy utility to formally bake in the changes. Others on SCN appear to have gotten by without this step. Fortunately I'm in a POC environment. I would have had more concerns doing so in a productive environment, as the utility repackages the entire BOE environment. I wouldn't do this in a real production landscape without assurances that I have a solid backup in place as it seems a bit risky to me.
- Logged onto BI Launch Pad with my SAP account credentials using SAP authentication. I was then able to open BEx Web Applications within the launch pad, and also run BEx queries directly in BOE without the need for a Java stack.
- I then closed my browser session and logged back into BOE using Enterprise authentication, logging on with my personal BOE account that was linked to my SAP account in step 2. I was also able to open web applications in this way as well. The same was true when I ran a query from BEx and logged on initially using enterprise account.
- I did not enable SSO anywhere, so I always had to logon 2X, which is fine for my use case. I really just want the standard query designer functionality to work. In a production landscape, we'd liklely implement SSO, though I've seen some historical concerns there (which I believe have since been resolved in later SP's).