problem connecting to Oracle via bash script [2]

Hi.

Sometimes, when I use Xshell I recieve error when trying to run a bash script which tries to connect to ORACLE DB. Is this issue familiar?
It doesn't occur when I use Putty, or when opening a new tab in Xshell.

Thanks!

Program Ver. : Xshell 3.0

We have not received this issue before. But, please send us the script file. We will try to find the cause.

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Technical Support

I think this issue can be closed. Can't replicate currently and there might be some local issue causing this.
Thanks for the will to help!