Hi! I have have two questions: 1. What is the best approach to trigger a service script wich will clean up something in the db after every db (re-)start? Has PG its own mechanism for such things or have i to use my /etc/init.d/postgresql script? 2. Sometime i read something about locks on transactions. Is this only an internal thing or can i set them by my own and if yes, for what? With the LOCK command i can only lock tables, or? Thanks for any help, Thomas! ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org