Re: rac & client connection
- From: "Ujang Jaenudin" <ujang.jaenudin@xxxxxxxxx>
- To: "Hemant K Chitale" <hkchital@xxxxxxxxxxxxxx>
- Date: Tue, 20 Feb 2007 11:29:54 +0700
ok hemant, thanks. i got the solution.
but when trying TAF, still got problem.
SQL> SELECT instance_name, host_name,
2 NULL AS failover_type,
3 NULL AS failover_method,
4 NULL AS failed_over
5 FROM v$instance
6 UNION
7 SELECT NULL, NULL, failover_type, failover_method, failed_over
8 FROM v$session
9 WHERE username = 'SYSTEM';
INSTANCE_NAME HOST_NAME FAILOVER_TYPE FAILOVER_M FAI
---------------- ------------------------------------------- -------------
---------- ---
racdb3 rac3pub
NONE NONE NO
SELECT
BASIC YES
got error when execute this on node3 and later I shutdown abort the racdb3
instance.
select * from sh.sales;
ERROR:
ORA-25401: can not continue fetches
5085 rows selected
#tnsnames entry:
RACDB =
(DESCRIPTION=
(ADDRESS_LIST=
(LOAD_BALANCE=ON)
(FAILOVER=ON)
(ADDRESS=(PROTOCOL=TCP)(HOST=10.1.3.71)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=10.1.3.81)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=10.1.3.91)(PORT=1521))
)
(CONNECT_DATA=
(SERVICE_NAME=racdb)
(FAILOVER_MODE=
(TYPE=SELECT)
(METHOD=BASIC)
(RETRIES=500)
(DELAY=5)
)
)
)
#as remote listener on all nodes , here i put TAF & load balance entries too
LISTENERS_RACDB =
(DESCRIPTION =
(ADDRESS_LIST =
(LOAD_BALANCE=ON)
(FAILOVER=ON)
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.3.71)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.3.81)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.3.91)(PORT = 1521))
(LOAD_BALANCE = yes)
)
(CONNECT_DATA =
(SERVICE_NAME = racdb)
(FAILOVER_MODE=
(TYPE=SELECT)
(METHOD=BASIC)
(RETRIES=500)
(DELAY=5)
)
)
)
#as local listener on node1 and the rest node is similar...except ip address
and name
LISTENER_RACDB1 =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.3.71)(PORT = 1521))
regards
ujang
On 2/20/07, Hemant K Chitale <hkchital@xxxxxxxxxxxxxx> wrote:
ORA-12545 would mean that DNS lookups for rac1pub/rac2pub/rac3pub are
failing.
Do a command-line "PING" to see if the Windows client can see those
hostnames.
Check if they are in the DNS server.
If you errors are "random" it could just mean that the Windows client
isn't finding
the hostname it is attempting. You have configured LOAD_BALANCE so the
client
would not always atttempt the same name "rac1pub" -- at times it would
attempt
"rac2pub" or "rac3pub" -- and one of them is missing from DNS lookups.
If you don't use a DNS server, you'd have to hardcode those entries
in WINNT\SYSTEM32\DRIVERS\ETC\HOSTS
Hemant
At 10:21 AM Tuesday, Ujang Jaenudin wrote:
>ERROR:
>ORA-12545: Connect failed because target host or object does not exist
>
>and this only happen on windows client, while in linux client it
>doesn't happen.
>
>regards
>ujang
>
>
Hemant K Chitale
http://web.singnet.com.sg/~hkchital
and
http://hemantoracledba.blogspot.com
--
regards
ujang
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