you need to query sys.databases
of master database to get list of databases and for each database name you get you need to query the db_name.sys.procedures
to check if it exists.
try below query and give a feedback:
use master
go
declare @FullQuery varchar(max)
declare @DBName varchar(50)
set @FullQuery=''
declare cr cursor for select name from sys.databases where database_id > 4
open cr
fetch next from cr into @DBName
while(@@fetch_status=0)
begin
set @FullQuery=@FullQuery+
' select name COLLATE SQL_Latin1_General_CP1_CI_AS from '+@DBName+'.sys.procedures where name like ''%proc_name%'' union'
fetch next from cr into @DBName
end
close cr
deallocate cr
set @FullQuery=substring(@FullQuery,1,len(@FullQuery)-5)
exec (@FullQuery)