[DOCS] Patch for pg_backend_pid

[Decibel!]

If I were to look in the docs for this function, I would think to look in system information functions way before monitoring, so I've added documentation there as well.

patch
Description: Binary data

--
Decibel!, aka Jim C. Nasby, Database Architect  [EMAIL PROTECTED]
Give your computer some brain candy! www.distributed.net Team #1828

smime.p7s
Description: S/MIME cryptographic signature