Hi Ekin,
The procedure to check database replication on CER is covered here
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cer/10_5_1/english/administration/guide/CER0_BK_C0C71A60_00_cisco-emergency-responder-administration-guide/CER0_BK_C0C71A60_00_cisco-emergency-responder-administration-guide_appendix_010110.html#CER0_RF_T6A3C97C_00
HTH
Manish