OpenEdge Data Management: DataServer for Microsoft SQL Server

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Chapter 8: Troubleshooting Tuning your environment with the –Dsrv startup parameter The DataServer (–Dsrv) startup parameter allows you to use special DataServer options to tune your environment. You pass these options as arguments to –Dsrv when connecting to a MS SQL Server database. There are two versions of the syntax, as follows: Syntax CONNECT data-source-name -ld logical-name -dt MSS -Dsrv arg1,val1 -Dsrv arg2,val2 -Dsrv arg3,val3... Syntax CONNECT data-source-name -ld logical-name -dt MSS -Dsrv arg1,val1,arg2,val2,arg3,val3... In this syntax: • The schema holder is already connected. • The data–source–name argument is the name of the data source and the logical–name argument is its logical name, which is defined when you create your schema image. • You pass the options as the argn,valn pairs. Here is an example of how to use the CONNECT statement with the –Dsrv parameter: CONNECT mssql_db -ld mydb -U x -P y -Dsrv qt_debug,EXTENDED -Dsrv PRGRS_IDBUF,100 -Dsrv PRGRS_MINBUF,10000 -Dsrv MAX_R,10000. Note that MAX_R is an abbreviation of MAX_ROWS. You can abbreviate option names as long as they identify parameters uniquely. Both the syntax statements and the example show the use of the –Dsrv startup parameter in CONNECT statements. You can also specify –Dsrv options in a parameter file, on a program item command line, or in the Connection Parameters field in the Database Connect dialog box. 320 OpenEdge Data Management: DataServer for Microsoft SQL Server
ODBC options ODBC options The DataServer allows access to selected options defined in the ODBC interface by providing corresponding options that you can use with the -Dsrv startup parameter. Each OpenEdge-supplied ODBC option has a name of the form option–name and corresponds with a startup option in the ODBC interface having the name SQL_option–name. Table 55 lists the OpenEdge-supplied ODBC startup options and the corresponding startup options defined in the ODBC interface. Table 55: ODBC options OpenEdge-supplied option ODBC-defined option 1 ACCESS_MODE SQL_ACCESS_MODE ASYNC_ENABLE SQL_ASYNC_ENABLE AUTOCOMMIT SQL_AUTOCOMMIT LOGIN_TIMEOUT SQL_LOGIN_TIMEOUT MAX_LENGTH SQL_MAX_LENGTH MAX_ROWS SQL_MAX_ROWS MSS_PRESERVE_CURS SQL_MSS_PRESERVE_CURS 2 NOSCAN SQL_NOSCAN OPT_TRACE SQL_OPT_TRACE PACKET_SIZE SQL_PACKET_SIZE QUERY_TIMEOUT SQL_QUERY_TIMEOUT RESP_POLLCT SQL_RESP_POLLCT RESP_TIMEOUT SQL_RESP_TIMEOUT TXN_ISOLATION SQL_TXN_ISOLATION 1. Refer to an ODBC application developer’s guide for information on the ODBC-defined options. 2. Cursor preservation allows server side cursors to be preserved beyond the transaction boundary. See the “Preserve cursors—the -Dsrv MSS_PRESERVE_CURS,1 option” section on page 329 for information and warnings. When you specify an OpenEdge-supplied ODBC option with the -Dsrv startup parameter, the DataServer sends the option to the ODBC driver for processing by the ODBC interface. The following example of the -Dsrv startup parameter tells the ODBC driver to return no more than 1,000 rows to the OpenEdge application: -Dsrv MAX_ROWS,1000 Note: The DataServer generally sets the correct value automatically. Therefore, you should reserve use of the ODBC options for troubleshooting and fine-tuning purposes only. OpenEdge Data Management: DataServer for Microsoft SQL Server 321
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® ® PROGRESS® OPENEDGE® OpenEdg
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Contents Preface . . . . . . . . .
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Contents Data output and retrieval
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Contents Migrating an OpenEdge data
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Tables Contents Table 1: DataServer
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Examples Contents Example 1: Passin
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Preface This Preface contains the f
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Chapter 5, “Configuring the DataS
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Before you begin Preface Before att
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In this example, STREAM stream, UNL
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After displaying a message, OpenEdg
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Preface Software Foundation (http:/
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Preface use, copy, modify, and dist
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Preface DISCLAIMS ALL WARRANTIES WI
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Preface INCLUDING ALL IMPLIED WARRA
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Preface WARRANTIES OF MERCHANTABILI
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Preface conditions for packages lik
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Introduction OpenEdge Data Manageme
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DataServer components DataServer co
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DataServer for MS SQL Server logic
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Figure 3 illustrates the schema-loa
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DataServer utilities DataServer uti
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DataServer configurations DataServe
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The remote DataServer configuration
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DataServer configurations Configuri
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Software requirements Software requ
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Guidelines for using the DataServer
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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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Client code page Database design is
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Support for Unicode Database design
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Indexes and sorting Database design
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Database design issues source’s c
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Triggers Database design issues Tri
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Data types Data types MS SQL Server
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Table 9: MS SQL Server data type eq
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Processing activities that require
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Table 11: MS SQL Server 2008 dateti
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Performing data type conversions Da
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Enabling Datetime data types using
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2008, or if you use a native driver
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Default and Special Datetime Defaul
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ABL-to-MS SQL Server data type mapp
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Unknown value (?) Data types The Da
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Record creation Suppose that you ha
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Data source record locking Data sou
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Handling lock timeouts Data source
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Locking impact on queries Data sour
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Data source record locking When thi
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To avoid this type of problem, the
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Error handling If you use NO-ERROR
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Cursors Cursors A cursor is like a
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Cursors your specifications. Adjust
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• Block cursors are directly link
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FIND customer WHERE ROWID(customer)
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For example, the following statemen
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find.p /* This code accesses an Ope
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ABL issues Table 19 summarizes ABL
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RDBMS Stored Procedure Details Open
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RDBMS stored procedure basics RDBMS
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RDBMS stored procedure basics When
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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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Run Stored-Procedure details Also n
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Loading results into a temp-table T
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Retrieving return codes Interfacing
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Interfacing with RDBMS stored proce
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Loading result sets into temp-table
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Employing additional enhancements I
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Handling errors Handling errors The
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ROWID Support This section presents
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ROWID Support The RUN STORED-PROC c
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ROWID Support If the table uses com
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Additional Features to Enhance Data
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Connection pooling Connection pooli
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DataServer connection management Co
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Firehose exclusions Connection pool
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Cursor downgrades Connection poolin
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Query tuning Query tuning How you s
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LOOKAHEAD NO-LOOKAHEAD SEPARATE-CON
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Query tuning Table 24: Query-tuning
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Join by SQLDB Join by SQLDB For que
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Table 25 describes how these contro
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Modifying the run-time schema check
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Configuring the DataServer Configur
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DataServer components Table 26: Ins
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Configuring a local DataServer Conf
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Configuring a remote DataServer 4.
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5162 Configuring a remote DataServe
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The ubroker.properties file Configu
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Configuring a remote DataServer Tab
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Configuring a remote DataServer The
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Creating a schema holder Creating a
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Creating a schema holder configurat
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Creating a schema holder 3. In the
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Creating a schema holder 10. Choose
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Typical configuration for a remote
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Typical configuration for a remote
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Connecting the DataServer You can s
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Starting a remote DataServer Starti
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Starting a remote DataServer If you
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Starting a remote DataServer Starti
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Connection guidelines Connection gu
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Connecting a schema holder at start
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Single-User Mode (-1) Read-Only (-R
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Using a remote DataServer configura
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Value pairs within the connect stri
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Connecting a schema holder Table 31
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qt_separate_connection qt_no_separa
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Connecting a schema holder Table 33
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Connecting a schema holder 1. Each
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Table 38 lists the DataServer log e
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Logging levels You can choose one o
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Enabling ABL to SQL Correlation in
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Connecting a schema holder Example
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Connection failures and OpenEdge re
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Connection failures and OpenEdge re
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Using the $UNIQUE_DSLOG environment
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The DataServer Tutorial OpenEdge Da
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Demonstration databases for DataSer
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Preparing to create demonstration d
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DataServer utilities When you acces
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Prime to ROWID identification ROWID
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Prime to ROWID identification inacc
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Creating a schema holder • Choose
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Creating a schema holder You can se
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Page 279 and 280: Managing server attributes See the
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Page 287 and 288: Defining a default constraint defin
Page 289 and 290: Managing server attributes 5. Click
Page 291 and 292: Managing server attributes • Resu
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Page 303 and 304: Delta df to MS SQL Server Increment
Page 309 and 310: Modifying field-level information Y
Page 311 and 312: Defining the ROWID Modifying a sche
Page 313 and 314: Adding extended ABL support Adding
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Page 317 and 318: Adding extended ABL support 3. Drop
Page 319: Troubleshooting This chapter descri
Page 323 and 324: ODBC options Table 56: DataServer o
Page 325 and 326: Using MS SQL Server and DataServer
Page 327 and 328: Large rows—the PRGRS_MINBUF optio
Page 329 and 330: ODBC options Wait time for asynchro
Page 331 and 332: Using the block cursor switches ODB
Page 333 and 334: Migration Issues This appendix disc
Page 335 and 336: Modifying your application Note the
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Page 339 and 340: Server Related Command Line Utiliti
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Page 349 and 350: Syntax Parameters service-name PROB
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Page 353 and 354: Data Type Details C This appendix s
Page 355 and 356: nvarchar 8 SQL_NVARCHAR CHARACTER t
Page 357 and 358: Using qt_debug to Analyze Performan
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Page 361 and 362: Index Numbers 4GLTrans log entry ty
Page 363 and 364: display format 309 overflow checkin
Page 365 and 366: INPUT-OUTPUT option retrieving para
Page 367 and 368: DataServer (-Dsrv) startup paramete
Page 369 and 370: 221, 242, 359 Schema defined 40 loa
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