I need technical document regarding vMotion/vCenter database configaration and maintenance
Is this you are looking for http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1000125
Hope this helps!
Look at this.
http://www.vmware.com/pdf/vsphere4/r40/vsp_40_esx_vc_installation_guide.pdf
....and one more
http://www.vmware.com/files/pdf/vc_microsoft_sql_server.pdf