CA ERwin Model Manager Implementation Guide

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Reindex the DatabaseExample: Sybase DBMS Reindex ScriptAn example of the Sybase dbms reindex script (MMReIndex.ora):-- Drop the Procedure appropriatelyIF EXISTS (SELECT name FROM sysobjects WHERE name = N'usp_ReIndex' AND type = N'P')BeginDROP PROCEDURE usp_ReIndexPrint 'Procedure Dropped'EndGO-------------------------------------------------------------------------------------- Object: usp_ReIndex-- Desc: Use this Procedure to ReIndex the MM SQL REpository whenever a-- Merge/Save of big model is done to MM-- Change History:-- Name Date Reason----------------------------------------------------------------------------------CREATE PROCEDURE usp_ReIndex ASDeclare@Cmd varchar(2000),@Name Sysname(100) ,@output_str varchar( 255 )DECLARE tmp_Reindex CURSOR FORSELECT nameFROM sysobjectsWHERE type = 'U'OPEN tmp_ReindexFETCH tmp_Reindex INTO @NameWHILE ( @@sqlstatus = 0 )BEGINSELECT @output_str = 'Processing Index for Table '+@NamePrint @output_str--Set @Cmd = 'DBCC REINDEX (' + @Name + ')'--Exec (@Cmd)DBCC REINDEX (@Name )If @@Error 0BeginSELECT @output_str = 'Processing Index for Table1 '+@NamePrint @output_strendFETCH tmp_Reindex INTO @NameENDClose tmp_ReindexgoEXEC usp_ReIndex74 Implementation Guide
Run the Database StatisticsTroubleshooting the Reindexing ScriptIf your query tool responds:no rows selectednot spooling currentlyit means you do not have the correct name for the CA ERwin MMschema-owner. You must get the correct user name, replace 'MODELMART'with the user name, and re-run the script.Run the Database StatisticsDatabase statistics show the distribution of the data in the database, and howthe data is stored. When a database executes a query, it uses an optimizer todetermine the best path to access the data. The optimizer relies on executionplans that specify the order in which the database accesses the tables and theexact steps used to pull the data. The database bases the creation of theexecution plans on the database statistics.As the data grows and changes, the statistics quickly become outdated and nolonger reflect the true condition of the database. As a result, the executionplans no longer apply and the optimizer makes poor decisions when processingqueries. You should run statistics regularly to ensure the maximumperformance of your database and, therefore, your CA ERwin MM mart. Werecommend that you run the database statistics nightly, and create anautomated batch job to simplify the process.Example: Statistics Commands (Oracle)NOTE: In the examples below, the schema owner name is 'MODELMART'To collect statistics for the CA ERwin MM (does not include the indexstatistics):EXEC DBMS_STATS.gather_schema_stats ('MODELMART',DBMS_STATS.AUTO_SAMPLE_SIZE);To collect statistics for the CA ERwin MM (includes the index statistics):EXEC DBMS_STATS.gather_schema_stats (ownname => 'MODELMART',cascade =>true, estimate_percent => dbms_stats.auto_sample_size);To delete the statistics:EXEC DBMS_STATS.delete_schema_stats ('MODELMART');Appendix C: CA ERwin MM Performance 75
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CA ERwin ® Model ManagerImplementa
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CA Product ReferencesThis document
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ContentsChapter 1: Modeling in the
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Troubleshooting the Reindexing Scri
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CA ERwin Model ManagerThe following
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Model Life Cycle FrameworksSystem-D
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Chapter 2: Installation andConfigur
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How to Prepare Your DBMS Environmen
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Page 23 and 24: How to Prepare Your DBMS Environmen
Page 29 and 30: Install the Administrative FilesIns
Page 31 and 32: Refresh the Mart After Upgrading Yo
Page 33 and 34: Create the CA ERwin MM Mart2. Compl
Page 35: Create the CA ERwin MM Mart4. Selec
Page 38 and 39: Conversion ProcessConversion Proces
Page 40 and 41: How to Upgrade the MartHow to Upgra
Page 42 and 43: Install the Software UpgradeInstall
Page 44 and 45: Convert or Update a CA ERwin MM Mar
Page 46 and 47: Convert or Update a CA ERwin MM Mar
Page 49 and 50: Appendix A: Microsoft SQL and Sybas
Page 51 and 52: Named Cache ConfigurationNamed Cach
Page 53 and 54: Database and Log SizingDatabase and
Page 55: How to Maintain an Efficient Databa
Page 58 and 59: Database ConfigurationDatabase Conf
Page 60 and 61: Database ConfigurationYou should ha
Page 62 and 63: Database Configurationrem Generate
Page 64 and 65: Storage ParametersStorage Parameter
Page 66 and 67: Storage Parameters2. Run the follow
Page 68 and 69: Storage ParametersRecommended Initi
Page 70 and 71: Reindex the DatabaseYou should regu
Page 72 and 73: Reindex the DatabaseExample: Oracle
Page 76 and 77: Run the Database StatisticsExample:
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