The Server Administrator some times get an error like, Another app is currently holding the yum lock because already running yum command in background so want to kill the existing process and try to start.
Existing lock /var/run/yum.pid: another copy is running as pid 19969.
Another app is currently holding the yum lock; waiting for it to exit...
The other application is: yum
Memory : 45 M RSS (493 MB VSZ)
Started: Sat Aug 8 03:16:54 2015 - 00:07 ago
State : Sleeping, pid: 19969
To kill the process can use any one, assume that the if your yum processor id is 19969 to find out id
Solution 1 :
root 19969 11.1 2.3 227328 23512 pts/0 S 18:41 0:00 /usr/bin/python /usr/bin/yum update
Solution 2 :
Solution 3 :