TMF Introduction (H06.03+)

Contents
HP NonStop TMF Introduction—540134-001
ii
2. Transaction Coordination
Who Uses TMF? 1-18
Application Designers and Programmers 1-18
Database Administrators and System Managers 1-18
System Operators 1-19
What Are the Benefits of TMF? 1-19
2. Transaction Coordination
Coordinating Local Transactions 2-1
Coordinating Distributed Transactions 2-2
Resource Managers and Transaction Gateways 2-3
How Distributed Transaction Coordination Works 2-4
Transaction Identification 2-6
Transaction Definition by the Application 2-6
Physical Transaction Identification 2-9
Locking Mechanism 2-10
Two-Phase Commit Protocol 2-11
Summary of Transaction Coordination 2-12
3. Transaction Protection and Database Recovery
Audit Trails 3-2
Master Audit Trail 3-3
Auxiliary Audit Trail 3-3
Audit Trail Files and Rollover 3-3
Audit Volumes 3-5
Active Audit Volume 3-5
Overflow Audit Volume 3-5
Restore Audit Volume 3-5
Audit Dumps 3-6
Automatic Audit Dumping 3-6
Transaction Backout 3-8
Initiating Transaction Backout 3-8
Backout for Distributed Transactions 3-9
Volume Recovery 3-10
Online Dumps 3-12
File Recovery 3-13
Summary of Transaction Protection and Database Recovery 3-16
TMF Transaction Protection 3-16
Database Recovery 3-16