Saroj, you must create two files, SXXXOracle and KXXXOracle, in /etc/rc2.d, for example, where XXX are numbers. So when your machine reboots that files starts Oracle Database and listeners. Well, first, because second is to stop database and listener. This is a question of Unix start. Due to I'm not really sure how can you do it, it's better you see at that directory, /etc/rc2.d, and look any pair of files to see it. Remenber SXXXOracle is to start Oracle and listeners and KXXXOracle is to stop its. HTH
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