"could not get an output file for the document (error RWI 00314)"

Hi

We are getting the following error when running the Webi Reports "could not get an output file for the document (error RWI 00314)". The issue seems to be related to Tomcat Memory Heap size, our Tomcat Java heap Size is 1024MB. We were able to resolve  the issue by restarting the Tomcat. We cannot restart the Tomcat in Prod if this is happening frequently.

Can some one please suggest  any other solution other than restarting the Tomcat frequently, our platform is BOBJ XI 3.1 SP3 with FP 3.1 our Wndows OS is 32 Bit.

Thank's for your help