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Migrating to Sybase Adaptive Server Enterprise 11.5 C-1
C
Sample Migration Plan Outline C.
The following is a high-level migration plan produced by Sybase
Professional Services for a Sybase customer. The plan is for a
migration from SQL Server 4.9.2 to SQL Server 11.0.x and reflects
site-specific needs.
The plan touches on technical issues specific to an 11.0.2 migration
and does not address technical issues particular to Adaptive Server
11.5. For information on technical changes in Adaptive Server 11.5,
see Chapter 5, “Implement: Making Required Application Changes”
and Chapter 6, “Implement: Making Required Database
Administration Changes”.
➤
Note
This plan is intended to be an example only. Your own plan may differ
significantly depending on your needs and resources.
Migration Approach Outline
The SQL Servers to be migrated at Acme Financial are now at version
4.9.2. Before version 4.9.2 database objects can be migrated to System
11, changes need to be made to make them compatible with System
11. Our approach is to try to automate as many as possible of the
changes needed, and after that to try to automate testing of the
changes as far as possible.
Changes and new features in System 10 and 11 have been
documented in several official Sybase publications. In the current
document, these changes have been divided into several phases.
Each phase will be handled differently during the migration process.
To help automate changes, a program will be written in the PERL
language. Some changes will be identified and made by the PERL
program. Other more complex changes will only be identified but
not made by the PERL program, because manual intervention will be
needed to decide whether and how to make these changes.
After all of the identified changes have been made, scripts will be
compiled in SQL Server. We expect to find more syntax errors
because some issues, such as correlation name handling, are too
complex to be picked up in the PERL program. Compilation errors
will be iteratively fixed until all objects compile cleanly.
- Migrating to Sybase® 1
- Table of Contents 5
- A. The Cyrano Migration Pack 9
- E. Migration Plan Checklist 12
- List of Tables 13
- Introduction and Guide to 15
- Resources 1 15
- Chapter Title Contents 16
- Technical Information Library 18
- Migration Web Page 19
- Migration Courses 19
- Sybase Press Books 20
- Third-Party Books 20
- Consulting Services 20
- Third-Party Tools 21
- If You Need Help 21
- Analyze: Documenting Business 23
- Requirements 2 23
- Acme Brokerage Company 24
- System Architecture 24
- Availability Requirements 25
- Database Change Metrics 25
- Maintenance Procedures 26
- Service Level Requirements 27
- Current Performance Metrics 28
- • Vendor issues 30
- Analyze: Documenting Your 31
- Environment 3 31
- CPU Resources per Machine 32
- Disk Configuration 32
- Network Configuration 34
- Tape Configuration 34
- Physical Memory Utilization 35
- Software Configuration 36
- Sybase Configuration 37
- SQL Server Objects 40
- If You Don’t Have Scripts 41
- Ready to Migrate 4 43
- Parallel With Replication 45
- Cutover Without Replication 47
- Phased Cutover 49
- Write a Migration Plan 50
- Update Hardware Resources 51
- Create Migration Scripts 52
- Implement: Making Required 55
- Application Changes 5 55
- Datatype Changes 57
- Table 5-3: Datatype hierarchy 59
- Name Hierarchy 59
- Subquery Processing Changes 62
- NULL Algodata Infosystems 64
- NULL New Age Books 67
- Binnet & Hardley 67
- Algodata Infosystems 67
- 250 no rows returned 68
- Enterprise 11.5 73
- Login and Password Changes 82
- RUN File Renamed 83
- New create table Permission 84
- New Backup Server 85
- Last Chance Threshold 85
- Reference Supplement 86
- Configuration Interface 88
- Old Name New Name 89
- Databases Online / Offline 90
- Increased Memory Requirements 92
- Figure 6-1: Areas of memory 93
- 4.x 125% 96
- 10.x 50% 96
- 11.0.x 25% 96
- Optional Space Considerations 98
- Test: Ensuring Stability and 101
- Performance 7 101
- Make Backups 102
- Summary of Testing Techniques 104
- • Production load capture 105
- Writing Performance Scripts 106
- Test Cycle: Summary of Tests 109
- Stage Purpose Best Technique 110
- Pre-Upgrade Single-User Tests 111
- Pre-Upgrade Multi-User Tests 111
- Test System Upgrade 112
- Post-Upgrade Multi-User Tests 113
- The Cyrano Migration Pack A 115
- For More Information 117
- A-4 The Cyrano Migration Pack 118
- Worksheets for Your Current 119
- Environment B 119
- Backup and Restore Procedures 121
- Database Dump Details 122
- Data Architecture Worksheet 124
- Transaction Profile 126
- Host Configuration 127
- Record CPU resources: 128
- Physical Memory Usage 129
- Operating System Configuration 134
- Detail the operating system 134
- SQL Server Configuration 135
- Table B-18: dbcc output 136
- Usage MB 2K Pages Bytes 136
- Database Devices 137
- Databases and Segments 138
- Dump Devices 139
- Migration Approach Outline 141
- In This Appendix 145
- Sample Task List Template 145
- Migration Analysis 146
- Migration Preparation 147
- Migration Quality Assurance 151
- Set Up Replication Server 154
- Run Regression Test Suites 154
- Perform Final Steps 156
- Staged Cutover Task Overview 161
- Migration Plan Checklist E 163
- Logical Support Architecture 165
- Migration Strategy Design 165
- E-4 Migration Plan Checklist 166
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