Well, there are two things you can do. One is just tell Java it's
allowed to use more memory than the default quota. For example, you
can say
java -Xmx512m jess.Main
to let Java run Jess in 512 megabytes of memory, rather than the
default (which may be 64 or 128m, depending on your Java version.)
The other thing you can do is write your Jess rules to use less
memory. In general, this means writing maximally specific patterns,
and putting the most specific patterns first in the rule, to reduce
the number of partial matches generated. The chapter in the manual
about the Rete algorithm and Jess's implementation talks some about
this.
On Apr 2, 2009, at 12:22 AM, Leo Anbarasan wrote:
Dear All,
I have problem in running jess engine....
It works fine with the simple rule....
But, when i add big rule... and run the jess engine it show
"OutOfMemoryError - Java heap space".
How to over come this problem....
Thanks in advance...
Awaiting for your reply....
--
With Love
Leo Anbarasan M
India
---------------------------------------------------------
Ernest Friedman-Hill
Informatics & Decision Sciences Phone: (925) 294-2154
Sandia National Labs
PO Box 969, MS 9012 [email protected]
Livermore, CA 94550 http://www.jessrules.com
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