I'd also add that we had nothing but problems with names on HP prior to version
8.1.7.4. Versions
8.1.7.4 and 9.2.0.2 have worked flawlessly.
Ron Thomas
Hypercom, Inc
[EMAIL PROTECTED]
Each new user of a new system uncovers a new class of bugs. -- Kernighan
john.kanagaraj@hd
s.com To: [EMAIL PROTECTED]
Sent by: cc:
[EMAIL PROTECTED] Subject: RE: Oracle Names Server 8.1.7
on HP 11
02/20/2003 12:19
PM
Please respond to
ORACLE-L
Zabair,
In addition to the excellent replies you have recieved, be aware that the
Name Server will keep an open connection to the Repository, but will check
the local cache (in the names directory) to resolve any queries. (Performing
a DB query for every name resolution can be expensive!) I have had
situations where both our nameservers (no ddo, both on Solaris, 8.1.7) lost
connection to the repository (due to DB going down) and the NS continued to
work. if you restart them and they cannot find the repository, they will use
the caches. Of course, you should build monitoring scripts that check both
the repository as well as response from the NS for highly available servers.
John Kanagaraj
Oracle Applications DBA
DBSoft Inc
(W): 408-970-7002
I don't know what the future holds for me, but I do know who holds my
future!
** The opinions and statements above are entirely my own and not those of my
employer or clients **
-----Original Message-----
Sent: Thursday, February 20, 2003 10:39 AM
To: Multiple recipients of list ORACLE-L
You may also want to add these 2 parameters to your sqlnet.ora. Speeds up
the switch to another nameserver.
NAMES.INITIAL_RETRY_TIMEOUT = 5 # Wait num seconds before going to next
nameserver, default=15
NAMES.REQUEST_RETRIES = 2 # Number of retries for nameserver, default=5
Gene
>>> [EMAIL PROTECTED] 02/20/03 12:19PM >>>
We've currently got Names Server running on 4 host boxes. If one Names
server is down, the client is configured to automatically attempt to connect
to the next one in the list. We had a problem recently were, if we issued a
tnsping from any of the clients we got the following message.
TNS-03505 - Failed to resolve name
This implies that our client PC is unable to resolve the name and hence was
not able to connect to the database. Usually this implies that something is
wrong with all our Oracle Names servers.
Inorder to resolve this problem, I had to kill the Names Server on each of
the 4 boxes and restart it.
The Names servers had somehow lost connection to the Oracle Names repository
database, although the servers appear to be attached to the database.
I reckon we can reduce the chances of this problem occuring again, by adding
a second Oracle Names database repository in our database cluster. This
means, that if the NAMES servers lose connection to one repository, they can
fall back on the second database without any loss of service.
What have other people done with their Names Server and respository and do
they see any draw backs with the above.
Sorry for the long email.
TIA
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