Caché High Availability Guide

	Contents
Chapter 1:	Introduction

Chapter 2:	Write Image Journaling and Recovery
	2.1 Write Image Journaling 2.1.1 Image Journal 2.1.2 Two-Phase Write Protocol 2.1.3 Write Image Journaling Modes 2.2 Recovery 2.2.1 Recovery Procedure 2.3 Error Conditions 2.3.1 If Recovery Cannot Complete (UNIX and OpenVMS) 2.3.2 Sample Recovery Errors 2.3.3 Write Daemon Panic Condition 2.3.4 Write Daemon Errors and System Crash 2.3.5 Freeze Writes on Error 2.3.6 Responding to a Freeze 2.4 Limitations of Write Image Journaling
Chapter 3:	Backup and Restore
	3.1 Configuring Caché Backups 3.1.1 Backup Tasks 3.1.2 Concurrent Backups 3.1.3 Creating Additional Backup Tasks 3.1.4 Deleting a Backup Task 3.1.5 Running Backups 3.1.6 Adding New Directories 3.1.7 Performing Multivolume Backups 3.1.8 Backup Log Files 3.2 Estimating Size of Backups 3.2.1 Run DBSIZE Interactively 3.2.2 Use the DBSIZE Extrinsic Function 3.3 Backup Considerations 3.3.1 Error Handling for Backups 3.3.2 Backup and Transaction Processing 3.4 Caché ^DBACK Routine 3.5 Restoring from a Backup 3.5.1 Using the Backup History to Recreate the Database 3.5.2 Suspending Database Access During a Restore 3.5.3 Restoring Database Properties 3.5.4 Performing a Restore 3.5.5 Error Handling for Restore 3.6 UNIX Backup and Restore 3.6.1 Using UNIX Backup Utilities 3.6.2 cbackup Utility 3.7 OpenVMS Backup and Restore 3.7.1 Efficiency 3.7.2 Concurrent Operation 3.7.3 History Log 3.7.4 Using the OpenVMS BACKUP Utility 3.7.5 Using CBACKUP.COM 3.7.6 Restore on OpenVMS 3.8 Backing Up Selected Globals and Routines 3.8.1 Backup and Restore Utilities for Selected Routines 3.9 Best Practices
Chapter 4:	Journaling
	4.1 Journaling Overview 4.1.1 Differences Between Journaling and Write Image Journaling 4.1.2 Database Integrity Protection 4.1.3 Automatic Journaling of Transactions 4.1.4 Rolling Back Incomplete Transactions 4.2 Journaling Configuration 4.2.1 Journaling Selected Globals 4.3 Journaling Tasks 4.3.1 Start Journaling 4.3.2 Stop Journaling 4.3.3 Switch Journal Files 4.3.4 Viewing the Journal File 4.3.5 Setting Journal Markers 4.3.6 Restoring the Journal 4.3.7 Displaying the Journal 4.4 Journaling Utilities 4.4.1 Selecting Globals for Journaling with %JOURNAL 4.4.2 Use %NOJRN to Manage Journaling at the Process Level 4.4.3 Extrinsic Functions for Manipulating the Journal File 4.5 Journaling Limitations 4.5.1 Temporary Globals
Chapter 5:	Shadow Journaling
	5.1 Shadow Journaling Overview 5.1.1 Fast Transmission Mode 5.1.2 Compatible Transmission Mode 5.2 Enabling Shadow Journaling 5.2.1 Configuring the Source Database Server 5.2.2 Configuring the Destination Shadow Server 5.2.3 Setting Shadowing Properties 5.3 Using Shadow Journaling 5.3.1 Starting Shadow Journaling 5.3.2 Stopping Shadow Journaling 5.3.3 Purging Shadow Journal Files 5.3.4 Viewing Error Messages 5.4 Disaster Recovery Using the Shadow Server
Chapter 6:	System Failover Strategies
	6.1 No Failover 6.2 Cold Failover 6.3 Warm Failover 6.4 Hot Failover
Chapter 7:	Cluster Management
	7.1 Overview of Clusters 7.1.1 Cluster Master 7.1.2 Cluster Master as Lock Server 7.2 Cluster Configuration 7.2.1 Namespaces and Replication 7.3 Managing Cluster Databases 7.3.1 Creating Caché Database Files 7.3.2 Mounting Databases 7.3.3 Deleting a Cluster-Mounted Database 7.4 Caché Startup 7.5 Write Image Journaling and Clusters 7.6 Cluster Backup 7.6.1 Cluster Considerations 7.7 System Design Issues for Clusters 7.7.1 Determining Database File Availability 7.8 Cluster Application Development Strategies 7.8.1 Block Level Contention 7.9 Caché ObjectScript Language Features 7.9.1 Remote Caché ObjectScript Locks 7.10 DCP and UDP Networking
Chapter 8:	Caché Clusters on Tru64 UNIX
	8.1 Tru64 UNIX Caché Cluster Overview 8.2 TruCluster File System Architecture 8.2.1 Caché and CDSLs 8.2.2 Remastering AdvFS Domains 8.3 Planning a Tru64 Caché Cluster Installation 8.4 Tuning a Tru64 Caché Cluster Member
Chapter 9:	Caché and Windows Clusters
	9.1 Load-Balanced Cluster 9.1.1 Setting Up a Load-Balanced Cluster 9.2 Failover Cluster 9.2.1 Setting Up a Failover Cluster 9.3 Common Procedures 9.3.1 Create a Cluster Group 9.3.2 Create an IP Address Resource 9.3.3 Create a Generic Service Resource 9.3.4 Create a Generic Application Resource 9.4 Resource Properties 9.4.1 IP Address Properties 9.4.2 Controller Properties 9.4.3 Cube Properties
Chapter 10:	ECP Failover
	10.1 ECP Recovery 10.2 ECP Recovery Guarantees 10.2.1 In-order Updates Guarantee 10.2.2 ECP Lock Guarantee 10.2.3 Clusters Lock Guarantee 10.2.4 Rollback Guarantee 10.2.5 Commit Guarantee 10.2.6 Transactions and Locks Guarantee 10.2.7 ECP Rollback Only Guarantee 10.2.8 ECP Transaction Recovery Guarantee 10.2.9 ECP Lock Recovery Guarantee 10.2.10 $Increment Ordering Guarantee 10.3 ECP Connection Management 10.4 ECP Recovery Limitations 10.4.1 ECP and Clusters $Increment Limitation 10.4.2 ECP Cache Liveness Limitation 10.4.3 ECP Routine Revalidation Limitation 10.4.4 Conflicting, Non-Locked Data Modification Breaks Transaction Rollback 10.4.5 Kill Of Large Global Within a Transaction Breaks Transaction Rollback 10.4.6 Journal Discontinuity Breaks Transaction Rollback 10.4.7 ECP Can miss error after Recovery 10.4.8 Partial SET/KILL leads to Journal Mismatch 10.4.9 Loose Ordering in Cluster Failover or Restore 10.4.10 Dirty Data Reads When Cluster Slave Crashes 10.5 ECP and Clusters 10.5.1 Client Fails 10.5.2 Server Fails 10.5.3 Network Is Interrupted 10.5.4 Cluster as an ECP Database Server