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How to Perform System Replication for SAP HANA 2.0.pdf
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HANA SR同步配置文档 官方同步配置标准SAP推荐文档 Business Continuity requires that the operation of business critical systems remain highly available at all time, even in the presence of failures. High availability and disaster recovery are the building blocks to support this. Among other features, SAP HANA provides the possibility to replicate your SAP HANA system within the same or over two data centers. This paper briefly describes SAP HANA System Replication in a step-by-step manner to support High Availab
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Document History
Document
Version
Description
1.0
First official release of this guide
1.1
Small updates and language edit
1.2
Some descriptions were corrected
2.0
Update with HANA 1.0 SPS07 and SPS08 features
2.3
Minor corrections
2.4
Secondary site usage for QA/DEV – small update
2.6
Reference to docu on e-mail notification for alerts
3.0
Update with HANA 1.0 SPS09 features
3.1
Minor corrections
3.2
Fixed return codes of systemReplicationStatus.py
3.3
Updated network settings & sr_state output
3.4
Corrected system replication hostname resolution
3.5
Update with HANA 1.0 SPS10 features
4.0
Update with HANA 1.0 SPS11 features & minor corrections
4.1
Update with HANA 1.0 SPS12 features & minor additions
4.2
Minor corrections
4.3
Minor corrections
5.0
HANA 2.0 – including Active/Active (read enabled)
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Table of Contents
1. Business Scenario ........................................................................................ 1
2. Before you start ............................................................................................ 1
3. Background Information ............................................................................. 2
3.1 High Availability ....................................................................................... 2
3.2 System Replication ................................................................................. 3
3.2.1 Replication modes ....................................................................... 4
3.2.2 Operation modes ......................................................................... 4
3.2.3 Data transferred to the secondary ............................................. 5
3.3 Takeover .................................................................................................. 7
4. Planning ........................................................................................................ 7
4.1 Prerequisites ........................................................................................... 7
4.2 Distance between data centers ............................................................. 9
4.3 Use secondary site for DEV/QA system ............................................... 9
4.4 License Validity ..................................................................................... 10
5. Configuration steps .................................................................................... 10
5.1 Configure system replication ................................................................ 11
5.1.1 Using SAP HANA cockpit 2.0 ..................................................... 11
5.1.2 Using SAP HANA studio ............................................................ 18
5.1.3 Using command line tool hdbnsutil ...................................... 21
5.1.4 Creating a tenant DB in a running system replication ............. 22
5.2 Disable system replication ................................................................... 22
5.2.1 Using SAP HANA cockpit 2.0 .................................................... 22
5.2.2 Using SAP HANA studio ............................................................ 24
5.2.3 Using command line tool hdbnsutil ...................................... 25
5.3 Setting up Multitier System Replication ............................................. 26
5.3.1 Using SAP HANA cockpit 2.0 .................................................... 27
5.3.2 Using SAP HANA studio ........................................................... 30
5.3.3 Using command line tool hdbnsutil ...................................... 32
5.4 Enabling full sync replication ............................................................... 32
5.5 Change replication mode ..................................................................... 33
6. Takeover.................................................................................................... 33
6.1 Perform Takeover ................................................................................. 33
6.1.1 Using SAP HANA cockpit 2.0 .................................................... 33
6.1.2 Using SAP HANA studio ............................................................ 35
6.1.3 Using command line tool hdbnsutil ...................................... 36
6.2 Client connection recovery .................................................................. 37
7. Resync optimization .................................................................................. 37
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