The name of the file that stores current JMS server log messages. Usually it is a computed value based on the name of the parent of this MBean. For example, for a JMS server log, it is jmsserverName.log. However, if the name of the parent cannot be obtained, the file name is weblogic.log. If you specify a relative pathname, it is interpreted as relative to the server's root directory. To include a time and date stamp in the file name when the log file is rotated, add java.text.SimpleDateFormat variables to the file name. Surround each variable with percentage (%) characters. For example, if the file name is defined to be myjmsserver_%yyyy%_%MM%_%dd%_%hh%_%mm%.log, the log file will be named myserver_yyyy_mm_dd_hh_mm.log. When the log file is rotated, the rotated file name contains the date stamp. For example, if the log file is rotated on 2 April, 2005 at 10:05 AM, the log file that contains the old messages will be named myserver_2005_04_02_10_05.log. If you do not include a time and date stamp, the rotated log files are numbered in order of creation. For example, myjmsserver.log00007.