Error TT12080: No subscriber found to swap with

Question

Hi all,
I set up active/standby replication and face with problems when duplicating data to the standby db.
- I have DSN tt_twin1 on host 192.168.208.189 (active), and DSN tt_twin2 on host 192.168.208.86 (standby).
- At active server:
create active standby pair tt_twin1 on "192.168.208.189", tt_twin2 on "192.168.208.86";
repschemes:
Replication Scheme Active Standby:
Master Store: TT_TWIN1 on 192.168.208.189
Master Store: TT_TWIN2 on 192.168.208.86
Excluded Tables:
None
Excluded Cache Groups:
None
Excluded sequences:
None
Store: TT_TWIN1 on 192.168.208.189
Port: (auto)
Log Fail Threshold: (none)
Retry Timeout: 120 seconds
Compress Traffic: Disabled
Store: TT_TWIN2 on 192.168.208.86
Port: (auto)
Log Fail Threshold: (none)
Retry Timeout: 120 seconds
Compress Traffic: Disabled
Store: _ORACLE from 192.168.208.189
Port: (auto)
Log Fail Threshold: (none)
Retry Timeout: 120 seconds
Compress Traffic: Disabled
Store: _ORACLE from 192.168.208.86
Port: (auto)
Log Fail Threshold: (none)
Retry Timeout: 120 seconds
Compress Traffic: Disabled
1 replication scheme found.
call ttrepstateget;
< ACTIVE, NO GRID >
1 row found.
- At standby server, I duplicate data from active db:
./ttrepadmin -duplicate -from tt_twin1 -host "192.168.208.189" -uid <usr> -pwd <pass> -keepcg -cacheuid <usr> -cachepwd <pass> -remoteDaemonPort 53398 -verbosity 2 "dsn=tt_twin2;uid=;pwd="
11:54:23 Contacting remote main daemon at 192.168.208.189 port 53398
11:54:23 Contacting the replication agent for TT_TWIN1 ON 192.168.208.189 (192.168.208.189) port 60720
11:54:23 Beginning transfer from TT_TWIN1 ON 192.168.208.189 to TT_TWIN2 ON LOCALHOST.LOCALDOMAIN
11:55:35 Checkpoint transfer 10 percent complete
11:55:35 Checkpoint transfer 100 percent complete
11:55:35 Checkpoint transfer phase complete
11:55:40 Log transfer 100 percent complete
11:55:40 Log transfer phase complete
11:55:40 Transfer complete
11:55:42 Duplicate Operation Ends
TT12080: No subscriber found to swap with
TT12080: Subscriber DSN: TT_TWIN2; Host: LOCALHOST.LOCALDOMAIN. File: repSelf.c, line: 923
- I tried to connect to standby db, and received message:
connect "dsn=tt_239_86_twin2;uid=<usr>;pwd=<pass>;oraclepwd=<pass>";
16231: The duplicate operation on this store was not successfully completed
The command failed.
What should I do to solve this issue??
Thanks in advance !
Edited by: user10754747 on Aug 3, 2011 9:49 PM

Answer 1

Using -localhost may make this work but htere are some fundamental problems here that really need to be addressed:
1. Trying to 'alias' localhost and localhost.localdomain to have an IP address other than 127.0.0.1 is an extremely bad idea and may cause problems in other (non-TimesTen) areas.
2. Having the machines official hgostname set to 'localhost.localdomain' is also an incredibly bad idea and should not be done.
3. While you can use I{ addresses to define replication that practice is strongly discouraged. You should use hostnames.
To achieve a correct setup at O/S and TimesTen levels yoiu should do the following:
1. Assign some sensible/meaningful hostnames for both machines. In the example below I will use 'myhost1' and 'myhost2' but of coure you could use any names that mnke sense.
2. Configure the O/S on each machine with the correct hostname. Note that a machines official hostname should not include any domain information (i.e. myhost1 is okay as an official hostname but myshot1.somedomain.com is not). Verify the hostname settings using hte 'hostname' command.
3. Correct the /etc/hosts file on both systems as follows:
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.208.189 myhost1
192.168.208.86 myhost2
4. Verify that you can ping the other machine by hostname from each host.
5. Ensure that you have created a TimesTen user and granted it ADMIN permission. For example:
CREATE USER ttadmin IDENTIFIED BY 'times10';
GRANT ADMIN TO ttadmin;
5. Modify the replication creation statement to use hostnames:
create active standby pair tt_twin1 on myhost1, tt_twin2 on myhost2;
6. Execute the create statement at the master datastore, start the repagent and set the store to ACTIVE (call ttRepStateSet('ACTIVE');
7. Assuming that active store is on 'myhost1' then the duplicate command would look like this:
ttrepadmin -duplicate -from tt_twin1 -host myhost2 -uid ttadmin -pwd times10 -keepcg -cacheuid <usr> -cachepwd <pass> -setMasterRepStart -verbosity 2 tt_twin2
Also note that for actve/standby replication to function the system clocks on the machines must be synchronised to an accuracy of < 250 ms. Hence you will almost certainly need NTP properly setup and active on both machines.
Chris