Database Software

We are in process of implementing RMAN backup’s with networker. We have installed and configured mno module and have run the script manually and works fine. But when I schedule to run it from networker, I got a tns access denied problem because I had not put the user_name/password in the script and was using connect target /

Below is my script

Works manually

connect target /
run {
set command id to 'networker_testdb_bkp';
allocate channel t1 type 'SBT_TAPE';
allocate channel t2 type 'SBT_TAPE';
send 'NSR_ENV=(NSR_DATA_VOLUME_POOL=OracleDaily)';
backup database plus archivelog;
release channel t1;
release channel t2;
}

works only if I

connect target user/password@service_name
run {
set command id to 'networker_testdb_bkp';
allocate channel t1 type 'SBT_TAPE';
allocate channel t2 type 'SBT_TAPE';
send 'NSR_ENV=(NSR_DATA_VOLUME_POOL=OracleDaily)';
backup database plus archivelog;
release channel t1;
release channel t2;
}

RMAN> SHOW ALL;
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1;
CONFIGURE BACKUP OPTIMIZATION ON;
CONFIGURE DEFAULT DEVICE TYPE TO 'SBT_TAPE';
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE SBT_TAPE TO '%F'; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 3 BACKUP TYPE TO BACKUPSET;
CONFIGURE DEVICE TYPE 'SBT_TAPE' PARALLELISM 3 BACKUP TYPE TO BACKUPSET;
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED;
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oraprd/product/10.2.0/db_1/dbs/snapcf_testdb.f'; # default

Also, to clarify, can anyone advise what happens when you give
RMAN> connect target / => as which user is the db connected to from RMAN ???

can anyone advise. thanks