Planning a Migration

Overview Migration Methods Migration Roadmap Migrating Siebel Data Post Migration Issues Migration Tools

Lesson: Migration Methods Single Step Migration (Not Supported) Two Step Migration/ Upgrade

Single Step Migration (Not Supported) Siebel 7.x Build 3701 Oracle 10 Siebel 8.x Build 16177 SQL Server 2008 Large Effort to Perform Manual Mapping for Schema Changes Tables added, merged, split, in-activated, renamed Columns added, renamed, deleted, moved to other tables Likelihood of Making Mapping Errors Very High

Two Step Migration/ Upgrade Siebel 7.x Build 3701 Oracle 10 Siebel 8.x Build 16177 Oracle 11 Siebel 7.x Build 3701 SQL Server 2005 Siebel 8.x Build 16177 SQL Server 2008

Lesson: Migration Roadmap

Lesson: Migrating Siebel Data Migrating Repository Data Migrating all Non-Repository Data Process of Migrating all Non-Repository Data Migrating User Names / Passwords (Manual Process) Indexes

Migrating Repository Data Database Configuration Utility in Siebel 7.7 Versions prior to Siebel 7.7 utilized utilities: Exprep, imprep Migrate only when repository changes are frozen

Migrating all Non-Repository Data Migrate Seed and Customer Data as one Insure Siebel Logging, Audit Trail, Triggers are disabled Migration Tools Dataexp / Dataimp (Slow but can run concurrent streams) [31 hours for 120 GB in serial migration] Insert / Select SQL [13 hours for 80 GB in serial migration] EIM (Does not retain Siebel row IDs) Consider Vendor Tools on very large tables BCP Bulk Loader

Process of Migrating all Non-Repository Data Build the SQL Server environment, configure SQL Server parameters, create the Siebel database (INSTALL.KSH), but don’t install the default Repository Import customized Repository to SQL Server database and apply any schema extensions (DEV2PROD) Export data using 1+ DATAEXP process(es) from existing Siebel database for all non-Repository Tables, including EIM, LOVs, Users, etc. Truncate all non-Repository Tables in SQL Server Siebel database (remove the default seed data) Import data from DATAEXP process(es) to SQL Server Siebel database using DATAIMP Audit row counts between DATAEXP and DATAIMP Collect statistics on SQL Server Siebel Tables Reconfigure Siebel Server and Client .CFG files to use SQL Server Siebel database Test Celebrate!

Migrating Usernames and Passwords (Manual Process) Siebel Logins in S_EMPLOYEE (v6.x) or S_USER (v7.x) are migrated with the process, but not Passwords Passwords are never stored in the Siebel Tables Typically use a Database UserID, Windows Active Directory, or some other LDAP solution Requires additional work if moving from Oracle UserID to any other authentication solution Likely requires changing Password for each UserID if moving from Oracle UserID to any other authentication solution

Indexes Unique indexes should be in place to enforce uniqueness No demonstrated advantage to building non-unique indexes after the loads Review low-cardinality Indexes after loading all data (Information on Index scripts can be found on Technote 6 and 16 on the Student CD)

Lesson: Post Migration Issues General Guidelines Testing Tuning

General Guidelines Keep catalog statistics current so Optimizer can do it’s job

Testing Execute multiple dry runs to debug the process Regression testing to ensure functionality has not changed Perform load and stress testing based on real live environments Test performance under load by using tools such as Load Runner

Tuning Tuning will be needed How much tuning was done for current implementation? Oracle uses rule based optimizer SQL Server uses cost based optimizer Perform stress testing with full sized database and expected full workload Avoid having test data fully cached when stress testing – Mimic real production - Do a full tablespace scan on a key table every minute to flush bufferpools

Lesson: Migration Tools Services for UNIX (SFU) SQL Server Migration Assistant (SSMA)

Microsoft's Solution - Services for UNIX Services for UNIX v. 3.5 provides the tools and environment that IT professionals and developers need to: Integrate Windows and UNIX/Linux environments Migrate UNIX applications to Windows Services for UNIX is one of the most comprehensive interoperability solutions: Directory, File System and UNIX Subsystem Tested and supported by Microsoft Services for UNIX uniquely enables IT pros to easily extend the value of their knowledge and training

Windows Services for UNIX UNIX Files Windows Files UNIX Application Windows Application UNIX Folders Windows Folders Windows Server UNIX Database UNIX Server SQL Server Database PC Laptop UNIX Workstation UNIX Workstation

SSMA

SSMA PL/SQL to T-SQL

Review Migration Methods Migration Roadmap Migrating Siebel Data Post Migration Issues Migration Tools