Oracle 10g Database Upgrade and Migration

Transcription

1 Oracle 10g Database Upgrade and Migration Page 1 1

2 Monika Dreher Product Technology Services ORACLE Corporation Agenda Upgrade to Oracle 10g Migrating to Oracle 10g Migration Resources Sample Migration Process Page 2 2

3 Agenda 0. Prepare 1. Install Oracle 10g Software 2. Database Upgrade Assistant (GUI) 3. Command line upgrade exp/imp COPY, CTAS Prepare 0. Prepare 1. Install Oracle 10g Software 2. Database Upgrade Assistant (GUI) 3. Command line upgrade exp/imp COPY, CTAS Page 3 3

4 Prepare Well prepared the odds are 90% for your upgrade to succeed xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxx xxxxxx... and 90% of all aborted upgrades fail due to inadequate preparation and testing!!! today? 31-Jan ? Error Correction S. Extended Support Ext. Maintain Supp t 2012 Page 4 4

5 Prepare Patchlevel of source database is irrelevant for the upgrade Install the latest patchset on the target database Check for important single (interim) patches Error Correction Support Policy: Note and Note (ECS, EMS and ES) Answers all questions about desupports, patches, patchsets, the patch process and special terms Don't forget operating system patches! Prepare Oracle certification: Page 5 5

6 Prepare Orace 7.x Oracle Oracle Oracle Oracle Oracle Oracle Oracle Oracle Oracle Prepare Export/Import for databases <5 GB Orace 7.x Oracle Oracle Oracle Oracle Oracle Oracle Oracle Oracle Oracle Page 6 6

7 Prepare Oracle Database Upgrade Assistant (GUI) Command Line Upgrade Full Export/Import SQL*Plus-COPY, CTAS and scripts (+) Pros simple and concise automatic resource / space checks backup facility parameter adjustment error log interactive total control in case of failure: just restart the failed script reorganisation OS change possible also possible for Oracle 5/6 platform independent (-) Cons in case of unexpected errors (for instance if the listener dies during upgrade) a complete restart is necessary limited possibility to intervene no OS change possible error-prone typing interpreting error messages no change of OS possible duration especially for large databases space requirements only structure and data everything else manually Install 0. Prepare 1. Install Oracle 10g Software 2. Database Upgrade Assistant (GUI) 3. Command line upgrade exp/imp COPY, CTAS Page 7 7

8 Install Space / resource requirements Software installation: 1,1 GB Database: 1 GB RAM: 512 MB (recommended: 1 GB) EM Grid Control: 512 MB (recommended: 1 GB) Install Number of CDs and time frame 3 CDs 60 min 1 CD Number of CDs 20 min Installation time Oracle9i Oracle10g Page 8 8

9 Install Pre-install checks: Switch off using./runinstaller -ignoresysprereqs Installation Choose Upgrade during installation: Page 9 9

10 Database Upgrade Assistant (GUI) 0. Prepare 1. Install Oracle 10g Software 2. Database Upgrade Assistant (GUI) 3. Command line upgrade exp/imp COPY, CTAS Database Upgrade Assistant (GUI) Features Graphically led upgrade Lots of important checks Creation of spfile RAC aware - inclusion of all nodes for RAC (almost) a must!!! Restore possible Can be run with modified upgrade scripts Silent mode dbua silent sid V920 [-backup <location>] Take care: ARCHIVING will be disabled (Note: ) Page

11 Database Upgrade Assistant (GUI) Database Upgrade Assistant (GUI) If "YES" has been chosen then DBUA changes the National Characterset to AL16UTF16 Page

12 Database Upgrade Assistant (GUI) Database Upgrade Assistant (GUI) Page

13 Database Upgrade Assistant (GUI) Database Upgrade Assistant (GUI) Page

14 Database Upgrade Assistant (GUI) Database Upgrade Assistant (GUI) Page

15 Database Upgrade Assistant (GUI) Command Line Upgrade 0. Prepare 1. Install Oracle 10g Software 2. Database Upgrade Assistant (GUI) 3. Command line upgrade exp/imp COPY, CTAS Page

16 Command Line Upgrade E.g. changing to a new server Server (OLD) 3) Execute utlu101i.sql 4) Shut down database 5) Copy all relevant files Server (NEW) 1) Install Oracle10g software 2) Copy utlu101i.sql 6) Apply suggested changes 7) Start the upgrade process Command Line Upgrade Command line upgrade: 1. Backup the database 2. Install Oracle 10g software 3. Analyze / modify the database using utlu101i.sql 4. Switch to new $OH, set required init parameters and create SYSAUX tablespace 5. Run upgrade script (e.g. u sql) and recompile (utlrp.sql) 6. Run post upgrade status tool script: utlu101s.sql Page

17 Command Line Upgrade Pre-upgrade tool utlu101i.sql Works in the context of the old database (just run it once!!) Checks all init parameters and displays warnings for obsolete and deprecated parameters Checks Installed options Components Tablespace SYSAUX Characterset Cluster check Run it from SQL*Plus Keep in mind: run this script only if the old Oracle installation is still there - otherwise you'll get lots of ORA-600 [17069] Command Line Upgrade Windows only Delete the old service: > oradim -DELETE -SID V817 Create a new service: > oradim -NEW -SID V10G -SYSPWD password -STARTMODE m -PFILE file Attention: oradim doesn't write a logfile (yet?) Page

18 Command Line Upgrade Important init parameter values COMPATIBLE SHARED_POOL_SIZE 96MB (32bit) or 148MB (64bit) otherwise: ORA-4031 PGA_AGGREGATE_TARGET 25MB JAVA_POOL_SIZE 50MB LARGE_POOL_SIZE 8MB Switch to new $ORACLE_HOME Command Line Upgrade Post-upgrade tool utlu101s.sql Run against new database in the context of 10g Checks the outcome of the upgrade with view DBA_REGISTRY Displays hints in case of failed component upgrades Shows scipt names to restart if errors occurred Page

19 Command Line Upgrade Post-upgrade tool utlu101s.sql DBUA - Upgrade Step-by-Step Check your currently installed options select comp_name, status from dba_registry; Recomplie your invalid SYS and SYSTEM objects using ultrp.sql SQL> SELECT UNIQUE object_name, object_type, owner FROM dba_objects WHERE status='invalid'; Install 10g Database Software Please do not upgrade yet! Install latest Patch Start DBUA and follow the instructions on the screens Check your Upgrade utlu101s.sql (<ORACLE_HOME>\RDBMS\ADMIN) Test your application Page

20 Migrating to Oracle - Agenda Migration Strategy Migration Details Migration Resources Sample Migration Process Migration Strategy Inform Assess Train Migrate Tune & Review P r o d u c t i o n Page

21 Inform Inform Oracle Technology Network (OTN) The technical source Web Casts Sales, Marketing and Technical Assess Assess Review current solution Define target solution Define migration path Oracle Consulting Migration Scoping Study Analysis of more complex solutions Page

22 Train Train Oracle University Classes Standard classes Partner trainings Web based training Online classes Web casts Migrate & Tuning/Review Migration Workbench Oracle Consulting Services Do it yourself Migrate Tune & Review Page

23 Migrating to Oracle - Agenda Migration Strategy Migration Details Migration Resources Sample Migration Process Typical Database Migration Projects Easy 15 to 40 person days Medium Complexity 40 to 180 person days Complex person days Very Complex > 700 person days Most migrations from SQL Server take from person days Page

24 Migrating to Oracle - Agenda Migration Strategy Migration Details Migration Resources Sample Migration Process Oracle Migration Tools & Resources cont. Automated Estimating Web Site: Migration Discussion Forum on OTN: Oracle Support - MetaLink: Page

25 Migrating to Oracle - Agenda Migration Strategy Migration Details Migration Resources Sample Migration Process Migration - SQL Server to Oracle10g Migration Process Oracle Migration Workbench Database Migration Verifier Page

26 Process 1. Migrating Schema and objects 2. Migrating Business Logic 3. Migrating the Clients applications Migrating Schema and Objects Migratable Objects in the database Tables and Data Primary Keys Check Constraints Foreign Keys Indexes Views Groups / Users Databases Stored Procedures Triggers Grants Rules Defaults User Defined Types Page

27 Migrating the Business Logic Business Logic in the database in SQL Server Primarily in Transact-SQL (T/SQL) Triggers, Stored Procedures Conversion to PL/SQL handled by Migration Workbench Extended Stored Procedures Callouts from the database packaged as DLL s and written in C,C++ Manual conversion process.net CLR Stored Procedures Stored procedures written in a.net language 10gR2 supports these Migrating the Clients applications No big issue if you don t have any business logic on the client Adapt the way how to call the business logic Managing Resultsets Adapt the way how to access the database Error Handling In some cases need some rewriting Page

28 Migration - SQL Server to Oracle10g Migration Process Oracle Migration Workbench Database Migration Verifier What is Oracle Migration Workbench? Oracle Migration Workbench: Is a wizard-driven Java tool Simplifies the process of migrating third-party databases to the Oracle platform Migrates the entire database schema, including triggers and stored procedures Page

29 Oracle Migration Workbench Intuitive user interface, supported by migration wizards Supports complete database migration Schema & Data Triggers & Stored Procedures, Views Embedded SQL Informix ESQL/C -> Oracle Pro*C Ability to customize data types Customization supported prior to generation Capture / Create / Migrate Oracle Migration Workbench Using Workbench Within Migrations 1. Capture the source database structure into Source Model (online/offline) 2. Map to Oracle Model Create a representation of the structure of the destination database 3. Migrate the source database Create the schema online or offline Transfer the data online or offline Page

30 Migration - SQL Server to Oracle10g Migration Process Oracle Migration Workbench Database Migration Verifier Database Migration Verifier Compares schema and data between source and migrated Oracle database Supports verification of tables, indexes, function, stored procedures, and triggers, and view objects Validates data in migrated Oracle database against source database Generates a Verification Report of schema and data verification failures summarized by object name and type Page

31 Database Migration Verifier Provides command line tool interface, allowing tool to be seamlessly integrated into existing testing processes Provides portable Java application implementation allowing tool to be easily moved between Windows and UNIX environments Provides support for Microsoft SQL Server 2000 and Sybase Adaptive Server 12 source databases Summary The migration process is usually painless and can be accomplished in a short amount of time Oracle supports your migration by means of Migration Kits & Resources Migration Tools Free downloadable tools to assist you in migrating the database to Oracle E.g. SQL Server,IBM DB2,Informix Oracle 10g DB Page

32 Q U E S T I O N S A N S W E R S Page