ECCE crashes due to too many open files

[ohlincha]

If ECCE is used continuously for a long time (weeks) it crashed due to 'too many open files'.

Need to collect data and exact error message(s)

[ohlincha]

Example error message:
[..]
exit; echo GOODBYE
Unable to create a socket
Error: java.net.SocketException: Too many open files

[ohlincha]

More diagnostics:
lsof |grep ecce
in one case yielded 9784 hits, most of which were of the type

java 18010 31175 me 99u REG 8,6 0 17194388 /home/me/.ecce/ecce-v6.4b/server/activemq/data/kr-store/data/hash-index-blob_ecce_url_property_data-Subscriptions
java 18010 31175 me 106u REG 8,6 0 17196148 /home/me/.ecce/ecce-v6.4b/server/activemq/data/kr-store/data/hash-index-topic-data_ecce_ejs_kill
java 18010 31175 me 107u REG 8,6 0 17196150 /home/me/.ecce/ecce-v6.4b/server/activemq/data/kr-store/data/hash-index-blob_ecce_ejs_kill-Subscriptions
java 18010 31176 me cwd DIR 8,6 4096 16517897 /home/me/.ecce/ecce-v6.4b/apps/bin
java 18010 31176 me mem REG 8,6 14014 16919807 /home/me/.ecce/ecce-v6.4b/server/activemq/bin/run.jar
java 18010 31176 me mem REG 8,6 367444 16919829 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/log4j-1.2.14.jar
java 18010 31176 me mem REG 8,6 467331 16919826 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/spring-beans-2.5.1.jar
java 18010 31176 me mem REG 8,6 81403 16919823 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/activemq-console-5.1.0.jar
java 18010 31176 me mem REG 8,6 455159 16919827 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/spring-context-2.5.1.jar
java 18010 31176 me mem REG 8,6 128051 16919828 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/xbean-spring-3.3.jar
java 18010 31176 me mem REG 8,6 52915 16919819 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/commons-logging-1.1.jar
java 18010 31176 me mem REG 8,6 2141382 16919830 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/derby-10.1.3.1.jar
java 18010 31176 me mem REG 8,6 275073 16919825 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/spring-core-2.5.1.jar
java 18010 31176 me mem REG 8,6 16030 16919820 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/geronimo-j2ee-management_1.0_spec-1.0.jar
java 18010 31176 me mem REG 8,6 32359 16919821 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/geronimo-jms_1.1_spec-1.1.1.jar
java 18010 31176 me mem REG 8,6 2315247 16919822 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/activemq-core-5.1.0.jar
java 18010 31176 me 12r REG 8,6 14014 16919807 /home/me/.ecce/ecce-v6.4b/server/activemq/bin/run.jar
java 18010 31176 me 21r REG 8,6 2141382 16919830 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/derby-10.1.3.1.jar
java 18010 31176 me 22r REG 8,6 367444 16919829 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/log4j-1.2.14.jar
java 18010 31176 me 23r REG 8,6 467331 16919826 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/spring-beans-2.5.1.jar
java 18010 31176 me 24r REG 8,6 455159 16919827 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/spring-context-2.5.1.jar
java 18010 31176 me 25r REG 8,6 275073 16919825 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/spring-core-2.5.1.jar
java 18010 31176 me 26r REG 8,6 128051 16919828 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/optional/xbean-spring-3.3.jar
java 18010 31176 me 27r REG 8,6 81403 16919823 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/activemq-console-5.1.0.jar
java 18010 31176 me 28r REG 8,6 2315247 16919822 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/activemq-core-5.1.0.jar
java 18010 31176 me 29r REG 8,6 52915 16919819 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/commons-logging-1.1.jar
java 18010 31176 me 30r REG 8,6 16030 16919820 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/geronimo-j2ee-management_1.0_spec-1.0.jar
java 18010 31176 me 31r REG 8,6 32359 16919821 /home/me/.ecce/ecce-v6.4b/server/activemq/lib/geronimo-jms_1.1_spec-1.1.1.jar