Streams/RAC and Database Link Problem

While working with streams 10g RAC,  setup went well but source database  propagation process won’t work with target database “strmrepl1” and returned TNS “12514” error.

Propagation Schedule for (STRMADMIN.SCOTT_C_Q, “STRMADMIN”.”SCOTT_A_Q”@strmrepl) encountered following error:
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

Strangely I could see db links working fine from source(streams) to destination(strmrepl) and vice versa. Manually DB links were working under TOAD, SQLPLUS but thru streams propagate process they won’t.

Finally I hit a solution when I carried “lsnrctl staus LISTENER”
I could see there were 2 services registered for same servicename

[Streams]$ lsnrctl status LISTENER | grep str
Service “replication” has 2 instance(s).
Instance “streams1”, status READY, has 2 handler(s) for this service…
Instance “strmrepl1”, status READY, has 2 handler(s) for this service…

Show parameter service_names at database did flash both instance details which seem wrongly updated.

Solution : Set right value for service name at database instance

[oracle@]$ srvctl config service -d streams      –Source DB
strmtesting PREF: streams1 AVAIL:

[oracle@]$ srvctl config service -d strmrepl    –Target DB
replication PREF: strmrepl1 AVAIL:

SQL> alter system set service_names=’replication’
$lsnrctl reload LISTENER

[Streams]$ lsnrctl status LISTENER | grep str
Service “replication” has 1 instance(s).
Instance “strmrepl1”, status READY, has 2 handler(s) for this service…