Method and system for greatly improving performance of distributed transaction coordinator

The invention relates to a method and system for greatly improving the performance of a distributed transaction coordinator, and the method comprises the steps: a transaction manager registers a to-be-processed global transaction to a transaction coordinator, the transaction coordinator allocates a global transaction identifier, and stores the global transaction identifier and predicted transaction associated resource information in a transaction context; accessing a first resource manager, registering a transaction branch to a transaction coordinator, generating a first branch identifier, and storing the first branch identifier to a transaction context; updating the first resource manager into the prediction resource; the service B accesses a second resource manager, registers a transaction branch to the transaction coordinator, generates a second branch identifier, and stores the second branch identifier to a transaction context; updating the second resource manager into the prediction resource; the transac