can any one provide a detailed document of database replication.
as well as issues u have faced with database replications and solution for that problem.
y because i want know in detailed about database replication
check one i made earlier:
from experience i can honestly say, if your DB replication brakes, and rebooting boxes is not fixing it, yoou are on to TAC. DB replication is delicate and hard to troubleshoot.
although the previous two replies covers almost everything. but you can use cisco reporting tool as one of the navigation option on the CCM and then go to the replication option. you can generate the report and troubleshoot accordingly.
basic requiremnts are :
2) good communication between the sub and pub
3)rhost and sqlhost files which may corrupt by changing hostname.
You can check this document for a detailed explanation about Database replication on CUCM and troubleshooting as well.