Problem(Abstract)
User launches Controller. User runs a standard report (also known as a "system report"). User receives error message. Typically the problem is intermittent - if the user runs the report later in the day (or the next morning) then the report works OK.
Symptom
RSV-BBP-0022 The absolute affinity request 'asynchWait_Request' failed
Cause
There are many different potential causes for this error message. For example:
- Scenario #1 - (most likely) Underpowered / virtual (VMWare/ESX) hardware being used, causing timeout issues
- See separate IBM Technote #1470677 for more details
- Scenario #2 - (very rare) Old/incompatible version of Adobe Acrobat Reader installed on client device
- See separate IBM Technote #1340663 for more details
- Scenario #3 - (fairly likely) Networking problems/issues
- See separate IBM Technote #1385378for more details
However, this IBM Technote shall specifically look at the following scenario from now on:
- Scenario #4 - Customer using an external 'load-balancing' network device to distribute requests to multiple gateway servers.
- In this scenario, the Cognos BI Report Server is incorrectly configured to use "Weighted Round Robin" (instead of the correct "Cluster Compatible").
More Information on Scenario#4The setting "
Weighted Round Robin" causes the Cognos Reporting Engine to handle multiple gateways/dispatchers itself. In other words, it will distribute requests to different gateways/dispatchers according to the Cognos BI logic.
The setting "
Cluster Compatible" causes the Cognos Reporting Engine to allow an external load balancing device (a network router designed to help with failover/fault-tolerance/redundancy etc.) to take over the job of distributing the requests to multiple gateways.
Environment
Scenario #4
Customer has:
- Multiple (2 or more) separate 'gateway' servers
- Configured Controller to use a virtual DNS entry (for example .) for its report server
- . resolves to a network load balancer device (for example a Cisco load balancing router "CSS") which provides DNS Round Robin routing to the multiple gateway servers.
Resolving the problem
Scenario #4
Launch Cognos Connection, and reconfigure the Cognos reporting engine to use the setting "Cluster Compatible".
Steps:
- Obtain a short period of downtime (no users on the system)
- Launch Cognos Connection ()
- If prompted, log into IBM Cognos Connection as an Administrator
- Depending on what screen you see, either (a) click "Administer IBM Cognos content" or (b) in the upper-right corner, click Launch, IBM Cognos Administration.
- On the Status tab, click System.
- Click the arrow for the Actions menu next to System and click Set properties
- Click the Settings tab.
- Select Tuning from the Category list.
- In the Value column, select the value for the Load Balancing Mode.
- Modify the setting to "Cluster Compatible"
- Click OK
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