Rename Central Administration Content Database

$ca_webapp_name = "http://centraladmin_url:9090"

$new_ca_contentdbname = "Content_CentralAdministration"

$old_ca_contentdatabase = get-spcontentdatabase -webapplication $ca_webapp_name

new-spcontentdatabase -name $new_ca_contentdbname  -webapplication $ca_webapp_name


$new_ca_cdb_id = Get-SPContentDatabase -WebApplication $ca_webapp_name | where {$_.Name -eq $new_ca_contentdbname}



get-spsite -contentdatabase $old_ca_contentdatabase | move-spsite -destinationdatabase $new_ca_cdb_id

 .... i will test this solution at 19th. April 2012