Web-CAT froze with java.lang.OutOfMemoryError

[rhobincu]

After a day of runtime, Web-CAT froze (stopped responding to web access) and the catalina.out tomcat log file has the following errors:

INFO [http-bio-8888-exec-1031] Application: pageWithName(null) called for URI /Web-CAT/WebObjects/Web-CAT.woa/wo/75.0.0.0.29.1.1.11.2.1.0.1
ERROR [http-bio-8888-exec-1031] DirectAction: session(): mismatched session IDs: have RwdcwOfduj5St143xrXAsg but expected lPutAlKwZICTPaVd2DNEbw
ERROR [http-bio-8888-exec-1031] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-986] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-986] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-986] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-986] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-986] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-986] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
 INFO [http-bio-8888-exec-1003] Application: Forcing full garbage collection...
 INFO [http-bio-8888-exec-1003] Application:     wasFree: 45160...
 INFO [http-bio-8888-exec-1003] Application:     isFree: 5648640, total mem : 129761280...
ERROR [http-bio-8888-exec-1045] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-1045] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-1028] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-1048] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
ERROR [http-bio-8888-exec-1048] Session: Error: sleep()'ing with multiple sessions active for user: Alexandru Marin
 INFO [http-bio-8888-exec-1043] Application: Forcing full garbage collection...
 INFO [http-bio-8888-exec-1043] Application:     wasFree: 33264...
 INFO [http-bio-8888-exec-1043] Application:     isFree: 2500000, total mem : 129761280...
 INFO [http-bio-8888-exec-972] Application: Forcing full garbage collection...
 INFO [http-bio-8888-exec-972] Application:     wasFree: 52336...
 INFO [http-bio-8888-exec-972] Application:     isFree: 62536, total mem : 129761280...
Exception in thread "http-bio-8888-Acceptor-0" java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-bio-8888-exec-1046"   at java.net.ServerSocket.implAccept(ServerSocket.java:543)
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "http-bio-8888-Acceptor-0"

Exception in thread "http-bio-8888-exec-1048" java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-bio-8888-exec-1003" java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-bio-8888-exec-972" java.lang.OutOfMemoryError: Java heap space