real stories illustrat`%%debugging expertise — focus on java

see other stories in j,ora.xls

DNS reload
freebsd NIC driver
custom classloader breaking EJB casting
weblogic upgrade max connection exceeded — ulimit for the shell,
max_tcp_connections, file descriptors

jdbc failures — snoop

weblogic jms XA conn factory; disable catch clause to trigger rollback

2 (custom) class loaders loading the same class — cast exception

nbc firefox and ie gets different dates from the same url. we reduced
the code to the simplest. then i managed to get a
Runtime.getRuntime().exec( “ls /tmp” );

log4j appenders in assignment are from 2 classloaders, but “murderer”
(classloader bug) looks like an accomplice — log4j errors are usually

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