OpenEdge Data Management: DataServer for Microsoft SQL Server

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Appendix D: Using qt_debug to Analyze Performance Using qt_debug to analyze performance The qt_debug option of the DataServer (-Dsrv) startup parameter (and the QUERY–TUNING DEBUG phrase) instructs the DataServer to print information on the queries it generates to the dataserv.lg log file. The qt_debug option provides extended diagnostic capabilities that you can use to determine which parts of your application might be causing additional network traffic or extra processing by the MS SQL Server database. Table 59 lists the diagnostic capabilities of qt_debug. Table 59: Diagnostic options Option Description qt_no_debug Supplies no debug information. This is the default. qt_debug,SQL Prints the SQL statements that the DataServer executes. qt_debug,EXTENDED Prints the SQL statements that the DataServer executes plus additional information such as cursor statistics. qt_debug,CURSOR Prints information about the cursors that the DataServer uses for internal calls and for opening queries. It tracks when cursors open and close and when the DataServer reuses them. It also summarizes each cursor’s activity. These diagnostics are especially helpful when determining OpenEdge maximum cursor settings or cursor “leaks” that your application might have. qt_debug,PERFORMANCE Prints information on the amount of time that certain operations take. These statistics are available only for some platforms. Note that any time differences between what the DataServer and data source report might be due to network performance issues rather than to DataServer or data source behavior. qt_debug,CALL_SUMMARY Prints information on cursors and timing. This information is supplied in summary form as an OpenEdge data (.d) file. Contact Progress Software Corporation for assistance with this file. Note: This option is not available as a QUERY–TUNING phrase option. qt_debug,VERBOSE Prints all of the information gathered by the other qt_debug options. Note: This option generates a very large log file. Be sure to clear your log file before using this option to test a procedure. Note: Turning on debugging options decreases DataServer performance. Be sure to turn off debugging options when you run DataServer applications in production mode. 358 OpenEdge Data Management: DataServer for Microsoft SQL Server
Using qt_debug to analyze performance This connection statement causes the DataServer to report on the time that ODBC operations take to run: CONNECT msscdb -Dsrv qt_cache_size,32000,qt_debug,PERFORMANCE. OpenEdge Data Management: DataServer for Microsoft SQL Server 359
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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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Updating a schema holder Updating a
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Verifying a schema holder Verifying
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Verifying a schema holder 2. Type p
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Changing connection information in
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Deleting a schema holder Deleting a
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Managing server attributes See the
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Managing server attributes Defining
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Managing server attributes If the p
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Managing server attributes 6. The P
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Defining a default constraint defin
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Managing server attributes 5. Click
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Managing server attributes • Resu
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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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Delta df to MS SQL Server Increment
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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 319 and 320: Troubleshooting This chapter descri
Page 321 and 322: ODBC options ODBC options The DataS
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
Page 351 and 352: Other command line utilities for th
Page 353 and 354: Data Type Details C This appendix s
Page 355 and 356: nvarchar 8 SQL_NVARCHAR CHARACTER t
Page 357: Using qt_debug to Analyze Performan
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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OpenEdge Data Management: DataServer for Microsoft SQL Server

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