Thank you for this post. I came across this issue while calling perl scripts from Informatica Powercenter 9.6 on windows 2012 R2. We were on Windows 2003 and Informatica and these perl script always ran fine in that environment. But, when I added "< nul" while calling the perl script, the issue got resolved. Thanks once again.

In reply to Re: Running a perl script as a system command in another thread hangs while main thread reading from STDIN by Anonymous Monk
in thread Running a perl script as a system command in another thread hangs while main thread reading from STDIN by rmahin

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