Configuring max no. of open pipes

I'm getting a problem with a customer application which fails with "Error 24 popen() too many open pipes".
What is the maximum that is being hit ( I'm guessing 255?) and is it configurable i.e. can it be increased. I'm looking for a workaround in the short term whilst we get to the bottom of what they're doing.
Thanks
Steve

I'm pretty sure an open pipe is nothing more then a file descriptor. You might want to check out what your rlimit for files is set to for your environment.

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