Http://vsrr2020.blogspot.com/2008/02/how-to-enable-combined-dmcl-and-dfc.html
1. Make sure that you have added the following lines to DFC. properties file found in the Documentum/config directory.
#
# Specifies whether to enable or disable trace.
#
DFC. Tracing. Enabled = on
#
# Specifies whether to record the parameter information of methods, if any,
# While tracing.
#
DFC. Tracing. recordparameters = on
#
# Specifies whether to record the return value of methods, if any, while tracing.
#
DFC. Tracing. recordreturnvalue = on
#
# Specifies whether to record timing information while tracing.
#
DFC. Tracing. recordtiming = off
#
# Specifies whether to record thread information while tracing.
#
DFC. Tracing. recordthreading = on
#
# Specifies whether to output multiple trace outputs on to a single line or not.
#
DFC. Tracing. compactmode = on
#
# Specifies how many levels deep the method callneed to be traced.
# Valid values: 0 and above.
#
DFC. Tracing. stackdepth = 100
#
# Specifies whether to combine the trace of dmcl along with other traces.
#
DFC. Tracing. combinedmcl = on
2. Save the DFC properties file.
3. The DFC logs will be created within the Documentum/logs directory. These will be fairly large!
4. Once you have collected the required log, disable the tracing again by setting DFC. Tracing. Enabled = false
And afterwards Save the properties file.