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Home -> Community -> Mailing Lists -> Oracle-L -> Re: connect to the databases without using tnsnames.ora?
I use host naming extensively here. We do use tnsnames.ora for our apps so
that we can take advantage of failover, but for my everyday work, I
connect to the databases with host naming. You don't need a tnsnames.ora
to do that OR a complex connect string (which is basically a tnsnames.ora
entry rolled up into one line).
When I connect to one of my servers, it is generally like this: sqlplus scott/tiger_at_hostname
This is possible because the listener for each database is listening on the default port (1521) and the name is resolved through the usual suspects for TCP/IP name resolution, in our case, DNS. The listener then receives the request and connects it to the database with the matching global_dbname. Very simple. You just can't use connection pooling, heterogeneous services or application failover with this method.
As for 3rd party products mistakenly requiring a tnsnames.ora file, that
is a valid complaint. And it isn't even limited to 3rd party tools. Some
of Oracle's own tools only give you the option of connecting to databases
that are listed in your tnsnames.ora file, which when using the host
naming method is not required!
--
Philip Douglass
Internet Networking Group
Database Administrator
SIRS Publishing, Inc.
I think the best way is to go to SQLNET.ORA and look for the ordering of
the
NAME.DIRECTORY_PATH.
Remove one by one and you know what is being used. Mostly i think it will
be
Name Server.
A query: Is HOST NAMING used widely?
Naveen
-----Original Message-----
Sent: Friday, September 06, 2002 7:58 PM
To: Multiple recipients of list ORACLE-L
Cc
I believe the Java thin client can connect without using the
tnsnames.ora file.
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-----Original Message-----
Sent: Thursday, September 05, 2002 8:23 PM
To: Multiple recipients of list ORACLE-L
Does anyone here knows how to setup the connections to the database server without using tnsnames.ora?
Our DBA didn't use it. But I don't know how and why? Could anyone tell me the other options?
Cc Harvest
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Liststo: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
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Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Philip Douglass
INET: philipd_at_sirs.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Liststo: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Fri Sep 06 2002 - 14:38:24 CDT
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