DBMS TRANSACTION MANAGEMENT SYSTEM FOR LOSS PREVENTION OF REPLICATION LOCATED ON MEMORY WHEN REPLICATING REAL TIME DATA OF DATABASE MANAGEMENT SYSTEM

摘要

The purpose of the present invention is to provide a transaction management system, for preventing replication data on a memory from being lost when data of a database management system (DBMS) is replicated in real time, which does not delete queues on a memory and stores the same as a message in a disk until replication data is reflected to a replication DB for each transaction, and when an apply agent determines the reflection to be normal and notifies the same to a queue on the memory, deletes a message stored in the disk. To attain such purpose, the transaction management system for preventing replication data from being lost comprises: a memory which extracts and receives changed data from DBMS source, stores the same as a message, a unit set of transaction data, and sends the changed data; and an apply agent which receives the changed data transmitted from the memory and applies the same to a replication DB. The changed data remains as a queue structure on the memory.