https-jsse-nio-8443-exec-72

[David Gutierrez]

Hi All, 
New to Jira, Do anyone has any good tools being used to monitor JAVA and SQL connections.
What we are looking for is a tool we can determine the source of these blocked threads reported in 

https-jsse-nio-8443-exec-72
Stack Trace is:
java.lang.Thread.State: BLOCKED (on object monitor)
at org.apache.log4j.Category.callAppenders(Category.java:204)
- locked <0x00000001c11a9728> (a org.apache.log4j.Logger)
at org.apache.log4j.Category.forcedLog(Category.java:391)
at org.apache.log4j.Category.log(Category.java:856)
at org.slf4j.impl.Log4jLoggerAdapter.info(Log4jLoggerAdapter.java:304)

Please advise