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Don Burleson Blog 








Change Oracle IP and Domain DNS Tips

Oracle Database Tips by Donald Burleson

Question:  I want to change the domain name for my Oracle server.  What are some tips to avoid the "ORA-01034: ORACLE not available" error?

Answer:  So long as you have the DNS host name in your tnsnames.ora file, changing the IP address from the DNS file (i.e. /etc/hosts) should not have any changes at the database level.

Question:  What if I'm changing a Windows workgroup with Oracle to move the Windows server to a new site with new IP and DNS settings?

Answer:  I don't do Windows, but I would change any DNS entry in the tnsnames.ora file and listener.ora file in the $ORACLE_HOME/$ORACLE_SID/network/admin directory to reference the real IP address and bypass any DNS entries. Here are my notes on tnsnames.ora configuration.

Reader Feedback:  My Listener.ora or tnsnames.ora files used DNS hostnames instead of an IP address. So when I changed the IP, Subnet, Def Gateway, DNS and WINS of the Windows 2003 server Oracle started up with no problems.

If you like Oracle tuning, you may enjoy the new book "Oracle Tuning: The Definitive Reference", over 900 pages of BC's favorite tuning tips & scripts. 

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