Need to revert default prompt in Linux after setting PS1 command

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# 1  
Old 01-17-2014
Need to revert default prompt in Linux after setting PS1 command

I have given as:

PS1="Karthick>" in linux.

Now the prompt changed as:

Now I need to get back the default prompt [oracle@oraclehost jk].

How to achieve this?

Thanks in advance
# 2  
Old 01-17-2014
come out and connect yourself again, unless you modified your profile...
# 3  
Old 01-17-2014
No. I need to change that without reconnecting.

Kindly help with this condition.

# 4  
Old 01-17-2014
For that we need to know more about your env: what shell are you using ( default shell at connection), did you modify a profile file? or you just typed on the command prompt?
# 5  
Old 01-17-2014
Using Bash shell through putty

We have not modified any profile file.

Simply typed in command prompt
# 6  
Old 01-17-2014
Ok. Please override ps1 with the default value you need again.
# 7  
Old 01-17-2014
Ok. But I do not know the default value boss.

Coz by default prompt looked like [oracle@oraclehost jk].

Unable to find the default value
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