How to disable cache implementation in 8.1 SP6 for entity beans

Question

How to disable cache implementation in 8.1 SP6 for entity beans
In our production environment, we want to disable cache implementation for entity beans. We are using weblogic 8.1 SP6.
Weblogic cache implementation has been causing many cachefull exceptions so we want that it fetches the data from database everytime instead of cache.

Answer 1

Check the "max-beans-in-cache" setting in your weblogic-ejb-jar.xml. The cache full exception, means that a new bean could not be created because of this cache being full.
Nothing to do with fetching from the database directly.
If you really want direct fetches then do not use beans at all. Consider using direct JDCB/SQL calls (without a entity bean) to fetch huge data.
Let's again review your application based on the below explanation before making a decision on which configuration change to perform:
If you truly have many ejbs simultaneously enrolled in transactions, then yes, the cache must be big enough to hold all the instances.
Your cache must have a max size large enough to handle your peak simultaneous transaction load.
Also, try to ask the following query to your application developer. Does every user actually have to have more than one bean in the cache ? Are many of these values read-only reference values that are not updated ?
SOLUTION CHOICE:
1. If you are testing with more number of users simultaneously, then you will need to increase the "max-beans-in-cache" setting in your weblogic-ejb-jar.xml to match the load.
2. If you have few users but still seeing a lot of beans, then consult with your application developer and try to ask the above questions (Does every user have more than......) and based on that try to redesign/tune your application to make it an effective Entity bean model.
3. If you have queries where huge result sets are returned, consider using plain/direct JDB/SQL calls.
Arun