Solution : https://service.sap.com/sap/support/notes/410252 (SAP Service marketplace login required)
Summary : 
      SAP Note details the installation requirements and procedures for 4.6D DB2 UDB Admin Tools, specifically for systems using DB2 Version 8 or higher. This guide emphasizes that from Patch 17 onwards, updated admin tools are needed for optimal management, including new log file management mandatory for certain new platforms and SAP systems without the ABAP stack. It also provides step-by-step instructions for installing and configuring the Admin Tools and highlights the changes in the packaging and versioning of the tools from patch 19 onwards. The required files for installation are specified, with instructions for downloading them from the SAP Service Marketplace.
Key words : 
db2 control center extensionthe db2 control center extension, /usr/sap/<sapsid>/sys/exe/run   - windows, /usr/sap/<sapsid>/sys/exe/run   windows, sysadm_group  db<dbsid>admdb2 update dbm cfg, dscdb6up -create <sapr3 password> < <sapsid>adm password>, /usr/sap/<sapsid>/sys/exe/run, /usr/sap/<sapsid>/sys/exe/runwindows, earlier admin tool versionsii     required filesiii    extract, 6d_ext 64-bit -> <platform> -> db2 udb iii, earlier admin tool versions packaging starting
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