DIR_CCMS is a SAP Parameter attribute which is used to control Root directory for monitoring. information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
The parameter instruments standalone Non-ABAP CCMS agents where to read
Distributed Statistical Records of J2EE engine of SAP NetWeaver 7.00.
Working directory of CCMS monitoring for Non-ABAP CCMS agent in case
there is configured separate CCMS monitoring segment for Java stack in
Double stack instance.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.