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
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Where to Find Information You Need
Where to Find Information You Need
This manual presents three levels of information: introductory and conceptual
information (Section 1), task-oriented guidelines (Sections 2 through 7, and 10 through
14), and reference information (Sections 8 and 9 and Appendixes A, B, and C). The
following table shows where to look for the information you need, based upon the
responsibility you have or the kind of tasks you perform at your site:
The sections contain the following information:
•
Section 1 introduces RDF and its goals, features, and capabilities; describes the
main RDF processes and their functions; introduces the RDFCOM and RDFSCAN
command interfaces used to communicate with the subsystem; and presents an
overview of RDF operation.
•
Section 2 describes how to configure hardware and prepare software for RDF
installation and operation.
•
Section 3 explains how to install and configure RDF, including how to copy
databases and files from the primary system to the backup system before starting
RDF.
•
Section 4 discusses how to operate RDF, including how to issue RDFCOM and
RDFSCAN commands and how to display RDF configuration parameters and
operating statistics, change configuration parameters, and interpret log files.
•
Section 5 explains how to manage the RDF environment, including how to recover
from file system errors, respond to failures, stop and restart the RDF product,
direct the backup system to take over application processing when a disaster
occurs at the primary system site, and perform other specialized tasks.
•
Section 6 details how to back up altered database structures and how to
resynchronize the primary and backup databases.
•
Section 7 describes how to synchronize entire databases or selected database
volumes online.
•
Sections 8 and 9 present the syntax of all RDFCOM and RDFSCAN commands,
respectively, and give examples of these commands.
•
Section 10 describes the triple contingency feature.
•
Section 11 describes subvolume- and file-level replication.
Responsibility Section
System manager All
System operator 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, A, C, D, E
Database administrator 1, 2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 16, A, B, C, D, E
System analyst 1, 2, 3, 10, 11, 12, 13, 14, 15, 16
Application designer 1, 2, 10, 11, 12, 13, 14, 16, A, B, C, D