Hello Arhan,
As you are talking about ECC, I assume you have HADR with Replication Server implemented in a Business Suite environment.
To understand the Hibernation mode error, as Terry mentioned, we would need to check the RS log, as well as the DR.log
To disable/enable replication use the sap_disable_replication/sap_enable_replication DR Agent commands. And after executing these commands, it is mandatory to re-materialize, using sap_materialize DR Agent command.
To create a partition, use the sap_add_device DR Agent command, it will add an additional partition device to the SRS associated with the logical site name you specify.
For details about DR Agent commands, please consult the HADR User's Guide -> HADR Users Guide
Regards,
Cris