I'am using PostGre SQL along with JBOSS and Tomcat for our application. After quite some time of the usage of the application i start getting these messages in my database console (Cygwin) :
DEBUG: geqo_main: using edge recombination crossover [ERX] CheckPoint Data Base: fork failed: Resource temporarily unavailable /usr/bin/postmaster: BackendStartup: fork failed: Resource temporarily unavailable - Backend startup failed DEBUG: geqo_main: using edge recombination crossover [ERX] CheckPoint Data Base: fork failed: Resource temporarily unavailable CheckPoint Data Base: fork failed: Resource temporarily unavailable DEBUG: geqo_main: using edge recombination crossover [ERX]
After this the performance of the system worsens and in the end we have to restart either of the 2 application servers Tomcat or JBOSS. This makes everything work alright again till the time i again start getting these messages again.