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I believe this was a bug in antlr that is now fixed. I'll see if we
can get a 3.0.6 release done some time updated to the latest antlr.
Edson knows more about this, as it was a bug he investigated.<br>
<br>
Mark<br>
Dejia Wang wrote:
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<p class="MsoNormal"><font color="black" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: black;">BTW, I am
using the JBoss Rules 3.0.5.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
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<p class="MsoNormal"><b><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font
face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;"> Dejia Wang <br>
<b><span style="font-weight: bold;">Sent:</span></b> Monday, January
15, 2007
3:56 PM<br>
<b><span style="font-weight: bold;">To:</span></b>
<a class="moz-txt-link-abbreviated" href="mailto:rules-users@lists.jboss.org">rules-users@lists.jboss.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b> [rules-users]
Out of
Memory Issue of JBoss Engine deployed on IBMWAS 6.0.2.7<br>
<b><span style="font-weight: bold;">Importance:</span></b> High</span></font><o:p></o:p></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Hi All, <o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">I ran into OOM (Out of
Memory) issue of JBoss<font color="navy"><span style="color: navy;">
Rule</span></font> Engine deployed on IBM
WAS 6.0.2.7. Below is the log<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">…<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loaded
org.antlr.runtime.DFA from
<a class="moz-txt-link-freetext" href="file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/xxx.ear/lib/antlr-3.0ea8.jar">file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/xxx.ear/lib/antlr-3.0ea8.jar</a>]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loading superclass and
interfaces of org/antlr/runtime/DFA]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Preparing
org/antlr/runtime/DFA]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loaded
org.antlr.runtime.DFA$State from
<a class="moz-txt-link-freetext" href="file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/xxxApplications.ear/lib/antlr-3.0ea8.jar">file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/xxxApplications.ear/lib/antlr-3.0ea8.jar</a>]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loading superclass and
interfaces of
org/antlr/runtime/DFA$State]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loaded
org.drools.lang.RuleParserLexer$1 from
<a class="moz-txt-link-freetext" href="file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/xxxApplications.ear/lib/drools-compiler-3.0.jar">file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/xxxApplications.ear/lib/drools-compiler-3.0.jar</a>]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loading superclass and
interfaces of
org/drools/lang/RuleParserLexer$1]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loaded
org.drools.lang.RuleParserLexer$2 from
<a class="moz-txt-link-freetext" href="file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/">file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/</a>
xxxApplications.ear/lib/drools-compiler-3.0.jar]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loading superclass and
interfaces of
org/drools/lang/RuleParserLexer$2]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loaded
org.drools.lang.RuleParserLexer$3 from
<a class="moz-txt-link-freetext" href="file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/">file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/</a>
xxxApplications.ear/lib/drools-compiler-3.0.jar]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loading superclass and
interfaces of
org/drools/lang/RuleParserLexer$3]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loaded
org.drools.lang.RuleParserLexer$4 from
<a class="moz-txt-link-freetext" href="file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/">file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/</a>
xxxApplications.ear/lib/drools-compiler-3.0.jar]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loading superclass and
interfaces of
org/drools/lang/RuleParserLexer$4]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">….<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loaded
org.drools.lang.RuleParserLexer$228 from
<a class="moz-txt-link-freetext" href="file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/xxxApplications.ear/lib/drools-compiler-3.0.jar">file:/D:/WebSphere/AppServer/profiles/AppSrv01/installedApps/xxxNode02Cell/xxxApplications.ear/lib/drools-compiler-3.0.jar</a>]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">[Loading superclass and
interfaces of
org/drools/lang/RuleParserLexer$228]<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">…<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">It looks like it loaded
the same class hundreds of times
until it exhausts the memory.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Any idea why this happens
and how to fix this?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Thanks- Dejia<o:p></o:p></span></font></p>
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