Changing the log file name and location in RAD6

[Bharat Chatla]

I want to change the log file location and the name of the log file which is set by default in portalserver. Default location is wp_root/log/wps_date.log

But when I change the file in location wp_root/shared/app/config/log.properties with logFileName = wp_root/log/bharat/wps_date.log the new log file is not getting generated on path wp_root/log/bharat/

What could be the possible reason. How to solve this issue.

Below is the file for reference.

# The name of the WebSphere Portal Server's log file.
# This setting is ignored if the WebSphere Application Server's log files are
# used.
#
# The following tokens are replaced by the corresponding values:
# $APPSERVER_NAME The name of the WAS node, this should be used for vertical
# clusters to enforce that the different nodes write into
# different files or directories
# $CREATE_TIME The time a file was created
#
# Default: log/wps_$CREATE_TIME.log
#
logFileName=log/bharat/wps_$CREATE_TIME.log

#
# Uncomment the 'traceString' line to activate tracing in the Portal.
# The value of 'traceString' has to conform to the following grammar:
# TraceString := <ClassString>(:<ClassString> *
# ClassString := <ClassName>=<type>=<state>(,<type>=<state> *
# ClassName := a java String
# state := [enabled|disabled]
# type := [all|low|medium|high]
#
# The ClassName is used to identify the class (or set of classes) to
# apply the specified change to. This ClassName may either be an exact
# name which uniquely identifies a single class, or it may identify a
# point in the class hierarchy class by using the "*" wild card
# character.
# For example, if classes a.b.c.d and a.b.c.e are registered, then the name
# a.b.c.d applies to just one class and the name a.b.c.* applies to both.
#
# Following are some samples of valid trace Strings.
# a.b.c.d=all=enabled
# a.b.c.d=low=enabled,medium=disabled
# a.b.*=low=enabled:a.b.c.d=low=enabled,medium=enabled:a.b.c.e=low=disabled
#
# In case the traces are turned on for the complete portal environment (e.g.
# com.ibm.wps.*=all=enabled) the portlet debug traces will be enabled as well.
# To disable the portlet debug traces the follwing traceString should be added:
# com.ibm.wps.pe.PortletRenderTimeLoggingHelper=all=disabled
#
#traceString=*=all=disabled