Rman DDboost issue when starting the backup

Issue:
we have installed DDboost for rman  backup configuration and the setup completed successfully,However when testing the backup got the below error.


allocated channel: c1
channel c1: SID=77 device type=SBT_TAPE
channel c1: Data Domain Boost API

Starting backup at 02-OCT-18
channel c1: starting full datafile backup set
channel c1: specifying datafile(s) in backup set
including current control file in backup set
channel c1: starting piece 1 at 02-OCT-18
released channel: c1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on c1 channel at 10/02/2018 11:38:37
ORA-19506: failed to create sequential file, name="03telatp_1_1", parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: non RMAN, but media manager or vendor specific failure, error text:
   sbtbackup: dd_rman_connect_to_backup_host failed

Root cause:
looks like some connection credential issStarting Control File and SPFILE Autobackup at 02-OCT-18

piece handle=LPMDMD_cf_c-292763313-20181002-01 comment=API Version 2.0,MMS Version 1.2.1.0

Solution:

make sure you have the  feed the variable like the below.

RUN {

ALLOCATE CHANNEL t1 TYPE SBT_TAPE PARMS 'BLKSIZE=1048576, SBT_LIBRARY=$ORACLE_HOME/lib/libddobk.so,ENV=(STORAGE_UNIT=$STORAGE_UNIT,BACKUP_HOST=$DATADOMAIN_HOST,ORACLE_HOME=$ORACLE_HOME)' FORMAT '%U-%d';

send 'set username $DDBOOST_USER password $PASSWORD servername $DATADOMAIN_HOST';

RELEASE CHANNEL t1;

}

Starting Control File and SPFILE Autobackup at 02-OCT-18

piece handle=DB_cf_c-292763313-20181002-01 comment=API Version 2.0,MMS Version 1.2.1.0

Finished Control File and SPFILE Autobackup at 02-OCT-18

released channel: c1