Another app is currently holding the yum lock; waiting for it to exit…

First i attempt to kill the process

# kill -9 2600

the process could not be stopped

Second i attempt to kill all yum process

# killall -9 yum

still the process could not be stopped

then i shutdown my server and switched on again and still the same result.

finally i remove the yum.pid 2600

after this yum started working fine.

Final solution if you fail to stop the process :

#rm -f /var/run/yum.pid 2600

 

then update your yum

# yum -y update