Hello The slave server stop working today and I looked to the error log and the the error message is Error: 1062 Duplicate Entry '252' for key 1
And than it shows the query and time when it happens. My question is why no error messages on master server just on slave server? As I understand , all queries run on master server and than on slave server. Both servers mysql 4.1 (Red Hat). Why the problem exist on slave server only? Thanks