Ingres 9.2 Migration Guide - Actian

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Logging System Performance ImprovementsLogging System Performance ImprovementsA number of improvements to the logging system eliminate or at leastminimize bottlenecks identified when running various performance tests. Thesechanges include elimination of contentious current_llb_mutex, faster log forcesthrough forcing only what needs forcing, and improved concurrency potential(fast resume).Buffer Manager Performance ImprovementsA number of improvements have been made to the buffer manager toeliminate or minimize bottlenecks identified when running various performancetests. These include:• Removal of stats for fixed priority pages. In Ingres 2.6, stats are trackedby buffer page type for better analysis of the BM’s LRU algorithm.• Raising a buffer’s priority each time it is fixed; previously it was raised onlywhen newly fixed.Operating System IntegrationEnhancements have been made to the internal performance that concern 64bit operating systems and operating system thread implementation on Linux.64-Bit Operating SystemsNow that Microsoft, Sun, HP, and Linux vendors have produced 64-bit versionsof their operating systems, we are providing a 64-bit build of Ingres on theseplatforms. Every effort is made to exploit large memory and files in these 64bit environments.Operating System Thread Implementation on LinuxIngres 2.6 provides support for operating system threads in Linuxenvironments including Intel, Alpha, S/390, and IA64. Operating systemthreads perform better in most circumstances than the internal Ingresthreading model.200 Migration Guide
Ingres ICE EnhancementsIngres ICE EnhancementsIngres/ICE development environment and setup and configuration areaddressed in Ingres 2.6 through integration with an existing Web applicationdevelopment environment.ICE Development EnvironmentThe ICE macro DTD can be used with an XML-aware editor to provide adevelopment environment for Ingres/ICE application development. A converterhas been added to take new macro syntax into the old macro syntax duringpage registration.ODBC EnhancementsThe ODBC driver has been updated to Version 3.5.Functions Supported by ODBC DriverThe Ingres ODBC driver supports all level one functions, as well as thefollowing level two functions:• SQLExtendedFetch (through Microsoft Cursor Library only)• SQLForeignKeys• SQLMoreResults• SQLNumParam• SQLPrimaryKeys• SQLProcedureColumns• SQLProcedures• SQLSetPos (through Microsoft Cursor Library only)Features Introduced in Ingres 2.6 201
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Ingres ® 9.2 Migration GuideING-92
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Run VMSINSTAL .....................
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BEFORE Triggers....................
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Increased Maximum Size of Character
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Chapter 1: Planning the Upgrade Thi
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Upgrade TypesUpgradedb MethodThe up
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Required Installations for Upgradin
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How You Move an Existing Developmen
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How You Prepare Your ApplicationsRe
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How You Load Databases and Applicat
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How You Prepare for Development Ins
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How You Prepare for Development Ins
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Testing Applications and Procedures
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How You Practice the UpgradeHow You
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How You Upgrade Using the Upgradedb
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How You Perform an Upgrade Using Un
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Chapter 5: Troubleshooting Upgraded
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Application RebuildingApplication R
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Application RebuildingModifications
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Appendix A: Upgrading from Ingres 6
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Considerations for Ingres 6.4Decima
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Considerations for Ingres 6.4Applic
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Unload/Reload Procedure for Upgradi
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How You Upgrade from Ingres 6.4 Usi
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Corresponding Parameter NamesIngres
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Corresponding Parameter Names• Th
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Appendix B: Keywords This section c
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Reserved Single KeywordsSQLQUELKeyw
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Reserved Double KeywordsKeyword Non
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DBMS Server EnhancementsLOB Locator
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DBMS Server EnhancementsAutomatic S
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DBMS Server EnhancementsIncremental
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Ingres 9.2 Migration Guide - Actian

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