How to rollback the complete process

Question

hi frnds...i have 3 services 1,2,3..here 1 and 2 has completed its processees and i got a problem with 3..so here i need to rollback all the process to my starting point..how to do that please let me know

Answer 1

see compensation handler is a block where you can keep the activities by which you can perform a rollback or compensation. compensation handler can be kept for a scope level or the process level, and compensation handler should be called from compensation activity. so, something unexpected happens in your BPEL where you want to perform the rollback, you can call the compensation handler using a compensate activity from a catch or catchAll branch.
Example:
Lets say your BPEL is inserting a record into the database and in the next step something unexpected happens and it goes to catch or catchall branch, now you need to delete the earlier inserted record, what you need to do is, keep a compensate activity in the catch or catchall branch, which it then calls the compensation handler and in the compensation handler, your code will be something like delete the record from the database using the pure sql option in the db adapter.
Hope this helps
N