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
What’s New in This Manual
HP NonStop RDF System Management Manual—524388-003
xiv
New and Changed Information
New and Changed Information
This manual replaces the HP NonStop RDF/IMP and IMPX System Management
Manual (part number 524388-002), making that manual obsolete.
Change bars in the margin identify all differences between this manual and the one it
replaces.
Besides minor corrections and clarifications, the significant new and changed
information is as follows:
•
Section 1, Introducing RDF:
•
Divided the topic “Unplanned Outages” into two topics, Unplanned Outages
With ZLT and Unplanned Outages Without ZLT.
•
Added the reverse trigger to Tips for Executing Fast Business Takeover
Operations.
•
Added “High performance” and “Zero Lost Transactions (ZLT)” to Features.
•
Added RDFNET Process to the RDF process descriptions.
•
Section 2, Preparing the RDF Environment: Revised the discussion of audit trail
purging under Configuring TMF for RDF Operations.
•
Section 3, Installing and Configuring RDF:
•
Added Process-Lockstep Gateway (T1226) Product Components.
•
Added Using the OWNER Attribute to Allow Super Group Users to Start, Stop,
and Manage RDF.
•
Added several parameter definitions to Setting Global Parameters.
•
Added Setting Trigger Parameters.
•
Added Setting Network Configuration Record Parameters.
•
Added RDFNET Process to “Setting Individual Process Parameters.“
•
Added Configuration File Compatability.
•
Section 4, Operating and Monitoring RDF: Added trigger parameters throughout.
•
Section 5, Managing RDF:
•
Revised the discussion of file-system error 2 in Table 5-1, Recovery From File
Modification Failures (RDF Event 700).
•
Added RDFNET Failure to “Processor Failures.”
•
Divided “TMF Subsystem Crash” into two topics, TMF Subsystem Crash on the
Primary System and TMF Subsystem Crash on the Backup System.