Question: In want to add a new instance to my Solaris
server, and I don't know how to add a new $ORACLE_HOME to my
existing database. I also need to know how to add a new
instance on Linux.
Answer: Start b y reviewing these
important notes on
Oracle instance consolidation, as shops worldwide are
recognizing the advantages of running dozens of instances on a
single monolithic server where it's easy to share computing
resources. Also see my notes on
adding a new instance to a RAC database server.
Here are
the basic steps for installing a new instance on your server:
1 - If you are adding an instance on a different
release, run DBCA and install the new Oracle software in another
$ORACLE_HOME directory under your
existing $ORACLE_BASE directory.
2 - Create
a new pfile, making sure that you
size the SGA
and PGA to allow enough room for the other instances on the
server.
2 - Now
make your oratab file. In Solaris, make an entry in /var/opt/oratab
for the new instance. In Linux, HP/UX and AIX, make the entry
in /etc/oratab.
3 - Change your .profile (or .login)
depending on your shell to allow you to
specify the new environment.
4 - You are now ready to
change your environment to point to your new $ORACLE_HOME.
5
- Next,
backup controlfile to trace from an existing database to
generate a set of "create database syntax. Beginners can get
the create database syntax by running DBCA to
create a new database under your new $ORACLE_HOME.
6 - Now populate your new data dictionary by running
$ORACLE_HOME/rdbms/admin/catalog.sql
6 - Finally, start
and populate your new instance with tables and indexes.
Also see how to
remove an instance from an Oracle server.
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