Hi manish,
After you follow gandolf's suggestion and you do not find anything, try replacing the service name with the full sqlnet identifier (kinda like this):
Code:
*.log_archive_dest_2='service="(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=myhost.mydomain.com)
(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=stand)(SERVER=DEDICATED)))"','. . . rest of parameters . . .
We had same problem and now it works...there are a few bugs related to redo transport in 11.2.0.1 and 0.2 fixed in 0.3.
Good luck!
"The person who says it cannot be done should not interrupt the person doing it." --Chinese Proverb