How to resolve Locked YUM

Mistakenly many times YUM is locked. When this happens for such problem like
Existing lock /var/run/yum.pid: another copy is running as pid 18092.

Here's the way to resolve.
Locate the yum.pid file, usually in fedora, it is located in /var/run dir

cd /var/run
ls
vim yum.pid

press insert
delete pid number and save pressing esc + : + x then press enter

now run your yum command

Fedora 10: yum update rpm db fail and meta data did not match error fixed

hey folks
I was trying to update my yum using: yum update but was getting an error saying that rpm db is failed, but I have fixed up that thing in the following steps.

Step 1: clean the yum

yum clean all

Step 2: removing all rpm db from /var/lib/rpm

rm -fr /var/lib/rpm/__db*

Step 3: Now update the yum

yum update

Now enjoy