Customer is using Derby embedded in Netcool Impact 6.1.1. Customer has created custom tables in the DB. When using multithreading and sending a lot of events, customer is noticing deadlock issues. The deadlock clears up after some time. Customer enabled row locking instead of table locking but still the same issue occurs. Please contact Shefali Sampat (Impact L3) at email@example.com for further info or if u need to look at the derby logs.