Primary database system, replication database system and method for replicating data of a primary database system

A method for replicating one or more data items of a primary database system by a replication database system, the method being performed by the replication database system and comprising;

• a. receiving replication data from the primary database system and replicating the one or more data items of the primary database system in accordance with the replication data;
• b. wherein the replication data received in (a) comprises lock data relating to at least one lock on the one or more data items.

A primary database system, comprising:

• a. a primary database server configured to send replication data to at least one replication database system to be used for replicating one or more data items of the primary database system by the at least one replication database system;
• b. wherein the replication data comprises lock data relating to at least one lock on the one or more data items.

A replication database system, comprising:

• a. a replication database server configured to receive replication data from a primary database system and for replicating one or more data items of the primary database system in accordance with the replication data;
• b. wherein the replication data comprises lock data relating to at least one lock on the one or more data items.