RDF System Management Manual
Table Of Contents
- RDF System Management Manual
- What’s New in This Manual
- About This Manual
- 1 Introducing RDF
- RDF Subsystem Overview
- RDF Processes
- RDF Operations
- Reciprocal and Chain Replication
- Available Types of Replication to Multiple Backup Systems
- Triple Contingency
- Loopback Configuration (Single System)
- Online Product Initialization
- Online Database Synchronization
- Online Dumps
- Subvolume- and File-Level Replication
- Shared Access DDL Operations
- EMS Support
- SMF Support
- RTD Warning Thresholds
- Process-Lockstep Operation
- Support for Network Transactions
- RDF and NonStop SQL/MX
- Zero Lost Transactions (ZLT)
- Monitoring RDF Entities With ASAP
- 2 Preparing the RDF Environment
- 3 Installing and Configuring RDF
- 4 Operating and Monitoring RDF
- 5 Managing RDF
- Recovering From File System Errors
- Handling Disk Space Problems
- Responding to Operational Failures
- Stopping RDF
- Restarting RDF
- Carrying Out a Planned Switchover
- Takeover Operations
- Reading the Backup Database
- Access to Backup Databases in a Consistent State
- RDF and NonStop SQL/MP DDL Operations
- RDF and NonStop SQL/MX Operations
- Backing Up Image Trail Files
- Making Online Dumps With Updaters Running
- Doing FUP RELOAD Operations With Updaters Running
- Exception File Optimization
- Switching Disks on Updater UPDATEVOLUMES
- 6 Maintaining the Databases
- 7 Online Database Synchronization
- 8 Entering RDFCOM Commands
- 9 Entering RDFSCAN Commands
- 10 Triple Contingency
- 11 Subvolume- and File-Level Replication
- 12 Auxiliary Audit Trails
- 13 Network Transactions
- Configuration Changes
- RDF Network Control Files
- Normal RDF Processing Within a Network Environment
- RDF Takeovers Within a Network Environment
- Takeover Phase 1 – Local Undo
- Takeover Phase 2 – File Undo
- Takeover Phase 3 – Network Undo
- Takeover Phase 3 Performance
- Communication Failures During Phase 3 Takeover Processing
- Takeover Delays and Purger Restarts
- Takeover Restartability
- Takeover and File Recovery
- The Effects of Undoing Network Transactions
- Takeover and the RETAINCOUNT Value
- Network Configurations and Shared Access NonStop SQL/MP DDL Operations
- Network Validation and Considerations
- RDF Re-Initialization in a Network Environment
- RDF Networks and ABORT or STOP RDF Operations
- RDF Networks and Stop-Update-to-Time Operations
- Sample Configurations
- RDFCOM STATUS Display
- 14 Process-Lockstep Operation
- Starting a Lockstep Operation
- The DoLockstep Procedure
- The Lockstep Transaction
- RDF Lockstep File
- Multiple Concurrent Lockstep Operations
- The Lockstep Gateway Process
- Disabling Lockstep
- Reenabling Lockstep
- Lockstep Performance Ramifications
- Lockstep and Auxiliary Audit Trails
- Lockstep and Network Transactions
- Lockstep Operation Event Messages
- 15 NonStop SQL/MX and RDF
- Including and Excluding SQL/MX Objects
- Obtaining ANSI Object Names From Updater Event Messages
- Creating NonStop SQL/MX Primary and Backup Databases from Scratch
- Creating a NonStop SQL/MX Backup Database From an Existing Primary Database
- Online Database Synchronization With NonStop SQL/MX Objects
- Offline Synchronization for a Single Partition
- Online Synchronization for a Single Partition
- Correcting Incorrect NonStop SQL/MX Name Mapping
- Consideration for Creating Backup Tables
- Restoring to a Specific Location
- Comparing NonStop SQL/MX Tables
- 16 Zero Lost Transactions (ZLT)
- A RDF Command Summary
- B Additional Reference Information
- C Messages
- D Operational Limits
- E Using ASAP
- Index
About This Manual
HP NonStop RDF System Management Manual—524388-003
xix
Related Reading
•
Section 12 describes support for auxiliary audit trails.
•
Section 13 describes support for network transactions.
•
Section 14 describes lockstep operation.
•
Section 15 describes SQL/MX database setup for RDF.
•
Section 16 describes the Zero Lost Transactions (ZLT) functional capability.
•
Appendix A summarizes the syntax of all RDFCOM and RDFSCAN commands.
•
Appendix B provides additional information about RDF, including reserved words,
default values for configuration parameters, and system file descriptions.
•
Appendix C lists all messages that can be generated by RDF processes,
RDFCOM, and RDFSCAN, and probable causes, effects, and recovery actions.
•
Appendix D lists all the operational limits that apply to the RDF/IMP, IMPX, and ZLT
products.
•
Appendix E describes how to monitor RDF entities using ASAP.
Related Reading
This manual belongs to the NonStop data management library of manuals. It is the only
manual that fully and directly supports RDF. To use this manual effectively, however,
you should be familiar with the information for the TMF product described in the
following publications:
•
TMF Introduction, which provides a general overview of TMF concepts and
capabilities for business professionals, application designers and programmers,
and system managers and administrators.
•
TMF Planning and Configuration Guide, which provides information on how to
plan, configure, and manage a TMF system.
•
TMF Operations and Recovery Guide, which describes how to monitor TMF
operations, reconfigure TMF, perform online and audit dumps, and respond to a
variety of exception conditions.
•
TMF Reference Manual, which covers the syntax, cautionary considerations, and
examples for using the TMFCOM command interface to the TMF product.
Another manual in the Data Management Library, Introduction to Data Management,
provides an overview of HP NonStop data management products, including RDF, and
discusses the use of these products in OLTP applications.