How to Achieve Performance Tuning In BPM Studio

Question

Please Tell me how to achieve performance Tuning in BPm Project . let me know do have any documentation for this .
Thanks in Advance .

Answer 1

*5. Group Automatic Activities in a Single Transactional Boundary*
When you have several automatic activities in a sequence, recognize this as a potential performance improvement opportunity. The default behavior of Oracle BPM is during each Automatic activity's execution:
1. Initiate the transaction
2. Read the work item instance's variable information from the Engine's database
3. Execute the logic in the Automatic activity
4. If no system exception occurs, commit the transaction and write the instance variable information back to the Engine's database
Many times you'll instead want to speed execution when there are several Automatic activities in a sequence. If three Automatic activities are in a sequence, then the four items listed above will occur three times. By grouping these into a single transactional boundary, instead of 12 steps you would have:
1. Initiate the transaction
2. Read the work item instance's variable information from the Engine's database
3. Execute the logic in the first Automatic activity
4. Execute the logic in the second Automatic activity
5. Execute the logic in the third Automatic activity
6. If no system exception occurs, commit the transaction and write the instance variable information back to the Engine's database
This grouping of Automatic activities into a single transactional boundary can be done in one of these three ways:
1. Create a Group around the sequence of Automatic activities (lasso the three activities) -> right mouse click inside the dotted line -> click "Create a Group with Selection" -> click "Runtime" in the upper left corner -> click the checkbox "Is Atomic".
2. Instead of placing the Automatic actiivities in the process, add them in a Procedure and then call the Procedure from a new Automatic activity in the process.
3. In Oracle BPM 10g you can enable "Greedy" execution for the process by right mouse clicking the process's name in the Project Navigator tab -> click "Properties" -> click the "Advanced" tab -> click the "Enable Greedy Execution" radio button.
Dan