How to kill RMAN backup jobs

You can kill RMAN jobs either using the Alter system kill session command  Or at Operating system level with the help of   “kill -9”.

Example 1: Alter system kill session, first, get the SID and SERIAL#

SQL> select b.sid, b.serial#, a.spid, b.client_info
from v$process a, v$session b
where a.addr=b.paddr and client_info like 'rman%';
 SID        SERIAL#    SPID         CLIENT_INFO
---------- ---------- ------------ ---------------------------------
295        11        568         rman channel=full_chanel

OR

SQL> SELECT SID, SERIAL#, CONTEXT, SOFAR, TOTALWORK,
ROUND (SOFAR/TOTALWORK*100, 2) "% COMPLETE"
FROM V$SESSION_LONGOPS
WHERE OPNAME LIKE 'RMAN%' AND OPNAME NOT LIKE '%aggregate%'
AND TOTALWORK! = 0 AND SOFAR <> TOTALWORK;
SID        SERIAL#    CONTEXT    SOFAR      TOTALWORK  %COMPLETE
---------- ---------- ---------- ---------- ---------- ----------
295        11        1          8215569    28258880   56.20

And then execute the following command:

SQL> alter system kill session '295,11' immediate;
 system altered.

Example 2: At OS level :

[oracle@PR ~]$ ps -ef | grep rman|grep -v grep
oracle 8432 2431 3 01:37 pts/1 00:00:00 rman target /
 [oracle@PR ~]$ kill -9 8432