Two different DB version in one server machine, help please
Hello, greetings.
I have two databases in one server.
One is 10g1 version, currently running. another one I just installed is 10g2 version. They each has it's own home. I mean two versions sit in separate oracle home. They both in window.
However, through sqlplus, toad etc, I can only access 10g1.
How can I access both versions through sqlplus and toad? What do I need to set up ?
Thanks in advance!
However, through sqlplus, toad etc, I can only
access 10g1.Show us the connect string that you use in SQSLPlus and in TOAD. Don't forget to include the part that tells the client which database to use ...
>
How can I access both versions through sqlplus and
toad? What do I need to set up ?Each Oracle product has it's own network connection configuration files. These are in ORACLE_HOME/network/admin
The listener.ora configures the piece that listens on the network. Each database must register to the listener. You only need one listener on the machine and each database should register to that listener. To check, run the command line 'lsnrctl status'
In your control panel, set the listener for 19gR1 to start manually (and then never start it)
The tnsnames.ora configures the client. Basically it says 'when yoohoo asks to connect to database blah, that means connect to host boing, talk to the listener on port whatever (usually 1521) and ask for a connection to database service bingo' as in
blah =
DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = boing)(PORT = 9876))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = bingo)
)Nearly 100% of the time, the two tnsnames.ora files, one in each ORACLE_HOME, do not contain all the information needed. So when you use the sqlplus from one Oracle Home and try to connect to the other database, you are missing critical pieces of information that are found only in the other ORACLE_HOME
The fix - as others say, is to run netca or netmgr (both available from START menu). Or simply open both tnsnames.ora files and make the match up by adding whatever entries are needed.
>
Thanks in advance!
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