OpenEdge Data Management: DataServer for Microsoft SQL Server

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Configuring the DataServer 5–14 Configuring multiple brokers You can configure multiple brokers by adding more UBroker.MS.broker–name and Environment.broker–name sections. Each broker instance must have a unique name. The broker instances inherit the properties that you define in the UBroker.MS (parent entity) section, but can override them. If you want to access multiple MS SQL Server databases and configure one or more brokers, each broker must run in a separate directory and a distinct environment. Using the NameServer By default, your DataServer for MS SQL Server broker instances are defined with a controlling NameServer and are provided with a default Data Service. Progress Software Corporation recommends using a NameServer configuration at all times. In such cases, the DataServer client’s initial connection is to the NameServer. However, you can alternatively connect the DataServer directly to the broker instance by setting the -DataService value to none in the connection parameters of your schema holder. If you will always use a -DataService value of none, you should remove the controlling NameServer from your broker instance definition. See the “Starting and stopping a broker process from the OpenEdge Explorer and Progress Explorer and connecting a client” section on page 6–3 for more information about connecting the DataServer to the NameServer and the broker. See OpenEdge Getting Started: Installation and Configuration for more information about the NameServer’s role in a configuration. Note: Do not simultaneously run some DataServers for MS SQL Server under brokers with controlling NameServers and others directly under brokers (that is, without controlling NameServers). This defeats the purpose of using a NameServer to control brokers. If you do this, the benefits of the NameServer are lost and load balancing is ineffective. Progress Software Corporation (PSC) recommends that you always use a NameServer, with one exception: you can choose initially to connect directly to a broker to simplify confirming an initial connection. Once you establish a connection, PSC recommends that you reintroduce the NameServer into your configuration.
Creating a schema holder Creating a schema holder A schema holder contains a schema image of the MS SQL Server database that your DataServer application accesses. The schema image contains the schema for your data source—that is, its data definitions—in an OpenEdge format. Although OpenEdge applications can access a data source directly by sending SQL statements through the DataServer, they cannot directly access its data definitions and must use the schema-image information instead. Before you begin Consider your business needs and deployment strategy when you decide where to build your schema holder. The schema holder can reside on the client machine or on any host in an enterprise configuration. Client schema holders improve performance for some applications. Host schema holders give you the flexibility of having them run as Windows services. Additionally, host schema holders might be easier to maintain. In a WebSpeed configuration, placing the schema holder on the Transaction Server machine optimizes performance. General schema holder creation tasks In general, you must do the following to create a schema holder: 1. Establish the appropriate server permissions needed for pulling the schema image into the schema holder. 2. Perform some preparatory steps. 3. Create and then connect an empty OpenEdge database. This database becomes your schema holder and contains your schema image. 4. Create the schema holder, which involves specifying connection parameters and pulling the schema from the data source. The following sections describe these steps in detail. Permission requirements When you use the DataServer to create a schema image in a schema holder, it accesses the associated MS SQL Server database. This section describes the data source permissions required when you create, update, or connect to a schema image. Permissions for creating or updating a schema holder You must have privileges to use the SELECT statement on certain data source objects to perform certain tasks. In this chapter, these privileges are referred to as SELECT privileges. 5–15
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PROGRESS® 10 OPENEDGE® OpenEdge®
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Contents Preface . . . . . . . . .
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Contents Values of output parameter
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Contents 8. Troubleshooting. . . .
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Tables Contents Table 1-1: DataServ
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Examples Contents Example 3-1: Pass
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Preface This Preface contains the f
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Chapter 5, “Configuring the DataS
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Typographical conventions This manu
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Preface A called external procedure
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Preface Obtaining more information
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Preface Copyright © 1991 by Lucent
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Preface OpenEdge includes Sonic sof
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Preface WARRANTIES, INCLUDING, BUT
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Introduction 1 The OpenEdge® DataS
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DataServer components DataServer co
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DataServer for MS SQL Server logic
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DataServer components If you plan t
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DataServer utilities DataServer uti
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DataServer configurations DataServe
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DataServer configurations Configuri
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Typical configuration scenarios Dat
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Guidelines for using the DataServer
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Documentation resources Documentati
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Initial Programming Considerations
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Database design issues Database des
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MS SQL Server DataServer data sourc
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Database design issues For example,
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Support for Unicode Database design
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Database design issues restrictions
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Database design issues For example,
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OpenEdge sequences Database design
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Data types MS SQL Server data types
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Table 2-5: MS SQL Server data type
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Determining your application needs
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Data types The ABL DATETIME and DAT
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Data types Table 2-10 provides deta
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Schema Migration > OpenEdge DB to M
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Default and Special Datetime Defaul
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Table 2-12 depicts mapping between
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Record creation Record creation Rec
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Record creation The VALIDATE or REL
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Share locks Data source record lock
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Additional record locking details D
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Data source record locking to be lo
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Transactions Transactions With Data
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Error handling Error handling One c
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Overflow checking Error handling Ov
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Impact of MAX-ROWS Cursors The MAX-
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Block cursors on versus off Cursors
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ABL issues • If you force the cre
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ABL issues Include the SCROLLING op
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ABL issues When you run find.p with
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NO-LOCK option 1 SHARE-LOCK option
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RDBMS Stored Procedure Details 3 Th
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RDBMS stored procedure basics RDBMS
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RDBMS stored procedure basics schem
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Run Stored-Procedure details •
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Run Stored-Procedure details An exp
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Run Stored-Proc statement execution
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Data output and retrieval options D
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Interfacing with RDBMS stored proce
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Technique to use proc-text-buffer I
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Page 129 and 130: Loading result sets into temp-table
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Page 139 and 140: Handling errors • If you try to e
Page 141 and 142: ROWID Support It is important to no
Page 143 and 144: ROWID Support If the table uses com
Page 145 and 146: DEFINE VARIABLE hSendSQL AS HANDLE
Page 147 and 148: Additional Features to Enhance Data
Page 149 and 150: Enhancements overview For installat
Page 151 and 152: Firehose and Fast Forward-Only Curs
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Page 155 and 156: Query tuning Query tuning How you s
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Page 159 and 160: Caching records Caching records The
Page 161 and 162: Join by SQLDB FOR EACH customer, EA
Page 163 and 164: Modifying the run-time schema check
Page 165 and 166: Configuring the DataServer 5 Config
Page 167 and 168: DataServer components Table 5-1: In
Page 169 and 170: Configuring a local DataServer Conf
Page 171 and 172: Configuring a remote DataServer 5.
Page 173 and 174: Configuring a remote DataServer For
Page 175 and 176: Configuring a remote DataServer Whe
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Page 183 and 184: Creating a schema holder Table 5-4
Page 185 and 186: Creating a schema holder You can al
Page 187 and 188: Typical configuration for a remote
Page 189 and 190: Typical configuration for a remote
Page 191 and 192: Connecting the DataServer You can s
Page 193 and 194: Starting a remote DataServer Starti
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Page 197 and 198: Starting a remote DataServer For ex
Page 199 and 200: Connecting a schema holder Connecti
Page 201 and 202: Direct Connect (-DirectConnect) Pas
Page 203 and 204: Note the following command syntax u
Page 205 and 206: Use the PRGRS_CONNECT parameter in
Page 207 and 208: Connecting a schema holder Table 6-
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Page 215 and 216: Connecting a schema holder Note: Ap
Page 217 and 218: Connecting a schema holder The ABL
Page 219 and 220: Connection troubleshooting Connecti
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DataServer utilities When you acces
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Creating a schema holder 4. In the
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Updating a schema holder Updating a
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Verifying a schema holder Verifying
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Verifying a schema holder 4. There
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Changing connection information in
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Deleting a schema holder Deleting a
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Migrating an OpenEdge database to M
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Delta df to MS SQL Server Increment
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Modifying field-level information Y
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Defining the ROWID Modifying a sche
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Adding extended ABL support Adding
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Adding extended ABL support Using c
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Adding extended ABL support create
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Troubleshooting This chapter descri
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ODBC options Tuning your environmen
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Tuning your environment with the -D
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SVUB,x—the Unified Broker Server
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Adjusting values Tuning your enviro
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Migration Issues A This appendix di
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Modifying your application Note the
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Sample code for the db.owner.Custom
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Server Related Command Line Utiliti
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-validate -help Progress Explorer c
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-host host-name Progress Explorer c
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Progress Explorer command line util
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-user user-name Progress Explorer c
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Syntax Parameters service-name PROB
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Non-Progress Explorer command line
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Data Type Details C This appendix s
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ntext 9 nvarchar(max) SQL_NLONGVARC
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Using qt_debug to Analyze Performan
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Index Numbers 4GLTrans log entry ty
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Data types 2-17, C-1 changing 7-34
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K Key buffer troubleshooting 8-8 Ke
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Progress Explorer Framework 5-23 an
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Service Name (-S) shutdown paramete
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