Availability Guide for Application Design

Contents
Availability Guide for Application Design—525637-004
iii
4. Data Protection and Recovery
Improving Availability on the Internet (continued)
Standards and Web Services 3-9
The Pathway Application Server 3-10
Web Server support 3-11
The iTP Secure WebServer 3-11
The iTP WebServer Architecture 3-13
The WebLogic Server 3-18
Server-Specific Features 3-18
Specific Enhancements 3-19
4. Data Protection and Recovery
Transaction Protection 4-1
What Is a Transaction? 4-2
Transaction Coordination 4-4
Database Recovery 4-6
Audit Trails 4-7
Transaction Backout 4-8
Volume Recovery 4-8
Online Dumps and Audit Dumps 4-9
File Recovery 4-9
APIs to Transaction Facilities 4-9
Interfaces From a NonStop Tuxedo Client Process 4-10
POET Interface (D-Series only) 4-10
RSC/MP Interface 4-11
Interface on an HP NonStop System 4-12
Duplicate Databases 4-12
Using the Remote Duplicate Database Facility (RDF) Products 4-13
Remote Duplicate Transactions
4-14
Database Management and Availability
4-18
Two Database Managers: NonStop SQL/MP and Enscribe 4-18
Reorganizing a Database While Avoiding Application Downtime 4-18
Reconfiguring a NonStop SQL/MP Database While Avoiding Application
Downtime 4-18
Queue Files 4-19
Using Queue Files 4-20
Queue File Records Can Be Transaction-Protected 4-20
Transaction Playback 4-20
Trickle Catchup 4-23
Eliminating Batch Windows 4-24