Drool Engine raises the Out-Of-memory exception ----------------------------------------------- Key: DROOLS-808 URL: https://issues.jboss.org/browse/DROOLS-808 Project: Drools Issue Type: Bug Components: core engine Environment: OS - Windows 7 JDK - 1.6 patch 32 Drools version - 5.4.0 Reporter: AMAR NATH Assignee: Mario Fusco Priority: Critical The drool engine raised the Out-of-Memory exception when the incorrect drl (rule) is processed. Due to this problem the JVM halts abruptly. See the following exception: Out of memory error reached while importing rule. Please check JVM memory configuration java.lang.OutOfMemoryError: Java heap space at org.antlr.runtime.Lexer.nextToken(Lexer.java:81) at org.antlr.runtime.BufferedTokenStream.fetch(BufferedTokenStream.java:133) at org.antlr.runtime.BufferedTokenStream.sync(BufferedTokenStream.java:127) at org.antlr.runtime.CommonTokenStream.consume(CommonTokenStream.java:67) at org.drools.lang.DRLParser.chunk(DRLParser.java:4137) at org.drools.lang.DRLParser.function(DRLParser.java:986) at org.drools.lang.DRLParser.statement(DRLParser.java:291) at org.drools.lang.DRLParser.compilationUnit(DRLParser.java:173) at org.drools.lang.DRLParser.compilationUnit(DRLParser.java:157) at org.drools.compiler.DrlParser.compile(DrlParser.java:240) at org.drools.compiler.DrlParser.parse(DrlParser.java:157) at org.drools.compiler.DrlParser.parse(DrlParser.java:139) at org.drools.compiler.PackageBuilder.drlToPackageDescr(PackageBuilder.java:478) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:467) at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:673) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:45) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:34) at com.equant.prisme.service.DroolsTest.main(DroolsTest.java:48)