Module 6: Implementing SQL Server Replication in an Enterprise Environment

Overview Planning for Disaster Recovery in a Replicated Environment Upgrading and Applying Service Packs in a Replicated Environment Understanding Enterprise Options in a Replicated Environment Understanding Replication with Heterogeneous Database Systems

Lesson: Planning for Disaster Recovery in a Replicated Environment How to Back Up the Publisher How to Back Up the Publisher and Distributor How to Back Up the Publisher, Distributor, and Subscriber Backing Up Snapshot Replication Backing Up and Restoring Transactional Replication Using sync with backup Forcing the Distributor to retain content until the Subscriber has backed up Recovery Strategies for Merge Replication Disaster Recovery Best Practices

How to Back Up the Publisher BackupBackup master msdb Published database

How to Back Up the Publisher and Distributor BackupBackup BackupBackup master msdb Published database

BackupBackup How to Back Up the Publisher, Distributor, and Subscriber BackupBackup BackupBackup master msdb Published database master msdb

Backing Up Snapshot Replication REPLDATA.sch.dri.bcp Databases Use Windows NT backup for snapshot folder Use Windows NT backup for snapshot folder Use SQL Server backup

Backing Up and Restoring Transactional Replication Using the sync with backup Option Using sync with backup option Ensures that Log Reader Agent will not send transactions to the distribution database Allows restoration of databases Restoring the publication database without using sync with backup option Avoids increase in latency

Forcing the Distributor to Retain Content Until the Subscriber Has Backed Up

Recovery Strategies for Merge Replication Restore Publisher and resynchronize with each Subscriber Restore Publisher and Distributor and resynchronize with each Subscriber Restore Distributor only Drop and recreate subscriptions Restore Subscriber database and resynchronize with each Publisher

Disaster Recovery Best Practices Keep a script for replication Link recovery to validation Use reinitialization cautiously Back up concurrently Restore databases to their original server

Lesson: Upgrading and Applying Service Packs in a Replicated Environment Configuring Replication with Multiple SQL Server Versions Upgrading a Replicated System Applying Service Packs to SQL Server 2000 Replicated Servers

Merge Replication Snapshot or Transactional Replication Configuring Replication with Multiple SQL Server VersionsRoleRole Combination 1 Publisher SQL Server 6.5 Distributor SQL Server 6.5 or 7.0 Subscriber SQL Server 6. x Combination 2 SQL Server 7.0 SQL Server 7.0 or 2000 SQL Server 6. x Combination 3 SQL Server 2000 SQL Server 6. x RoleRole Combination 1 Publisher SQL Server 7.0 Distributor SQL Server 2000 Subscriber SQL Server 7.0 Combination 2 SQL Server 2000 SQL Server 7.0

Upgrading a Replicated System PublisherDistributorSubscriber Data Flow

Applying Service Packs to SQL Server 2000 Replicated Servers Running in a mixed environment You can replicate between a SQL Server with a service pack installed and a SQL Server without that service pack installed Restoring after service pack upgrade After applying a service pack, back up the log or full database

Lesson: Understanding Enterprise Options in a Replicated Environment Choosing a High Availability Solution Subscribing from the Internet Replicating over a Dial-up Networking Connection Replicating with Microsoft Pocket PC

Choosing a High Availability Solution Standby features Failover qualities Metadata support Transactional consistency and current transactions Performance impact

Replicating with Virtual Private Networks (VPNs) Replicating through ISA Server Subscribing from the Internet Internet Secure Connection Secure Connection ISA Server VPN

Replicating Over a Dial-up Networking Connection Configuring replication Creating a scheduled job

Replicating with Microsoft Pocket PC Microsoft SQL Server 2000 Windows CE Edition Replicating with a Microsoft Pocket PC Subscriber Row-level tracking Using SQL Server CE in a programming environment Subscribing to a publication through an application The role of Microsoft Internet Information Services in SQL Server CE applications

Lesson: Understanding Replication with Heterogeneous Database Systems Publishing to Heterogeneous Subscribers Replicating with Microsoft Access Subscribers Replicating with Oracle Subscribers Replicating with IBM DB2 Subscribers Publishing from Heterogeneous Sources

Publishing to Heterogeneous Subscribers Oracle IBM DB2 SQL Server Microsoft Access Microsoft Access SQL Server

Replicating with Microsoft Access Subscribers SQL Server 2000 Desktop Engine Based on SQL 2000 technology Most Access projects can run without revision Microsoft Jet Does not support case-sensitive sort order Push and anonymous pull subscriptions Supports rowcount validation only Uses reserved column names

Replicating with Oracle Subscribers Oracle subscription support SQL Server has ODBC driver and OLE DB provider (Intel) Must install Oracle’s SQL*Net driver on Publisher and Distributor Replication restrictions Table names cannot have spaces date data type maps to char(4) Only one column of text or image data ( long raw ) SQL ranges for float and real differ from Oracle

Replicating with IBM DB2 Subscribers DB2/AS400 OLE DB provider and ODBC driver are included with Microsoft Host Integration Server 2000 SQL Server Books Online has data mapping table DB2/MVS SQL Server Books Online has data mapping table Other DB2 Systems May require third-party ODBC drivers or OLE DB providers

Publishing from Heterogeneous Sources Build applications with: SQL Distributed Management Objects Replication Distributor Interface Third-party tools

Review Planning for Disaster Recovery in a Replicated Environment Upgrading and Applying Service Packs in a Replicated Environment Understanding Enterprise Options in a Replicated Environment Understanding Replication with Heterogeneous Database Systems

Course Evaluation