TTL is 7 days (in seconds) . I am able to browse the queue content using -sql= -qb -md -q using sdfperf. My assumption is that if Click on Browse Queue option on JMSToolBox, The same message should display but no messages displayed on the screen. It is showing the below logs in jmstoolbox logs
Q Depth : null Max : 2147483647 Nb msg to display : 0
Thanks
Shiva