Thanks for the reply.
Can you please help me in understanding the two updates that has come in the two new LDAP releases "slapd-bdb contextCSN updates from updatedn" & " slapd syncrepl contextCSN storing in subentry".
Can you please suggest what configurations are required to frequently change the contextCSN in slapd.conf so that my script can pick the latest one? I am also attaching the python script which I am using to check the sync status across mirrors?
for information on sync_use_subentry read slapd.conf(5) or slapd-config(5) on olcSyncuseSubentry