OpenEdge Data Management: DataServer for Microsoft SQL Server

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Troubleshooting 8–4 DataServer options In addition to the ODBC-defined options, the DataServer provides a number of -Dsrv options that are defined on the DataServer side of a connection. Each DataServer option has a name of the form PRGRS_option–name, to reflect its origin. Table 8–2 lists and describes these options. Table 8–2: DataServer options (1 of 3) Option Description PRGRS_ALWAYS_INDEX Specifies if the DataServer should always order result sets. The value is either 1 for YES or 0 for NO. If this option is set off, then results that do not explicitly describe a desired ordering and/or that do not require ordering will be returned unordered. (The default setting is 0.) Note: The driver and data source need to have the capability to preserve cursors beyond a transaction boundary in order for the PRGRS_ALWAYS_INDEX option to be available. PRGRS_BLOCK_CURS Specified if the DataServer should use block cursors for NO-LOCK queries. The value is either 1 for YES or 0 for NO. This option is set to 1 by default. PRGRS_CACHE_CONN Specifies a maximum value to indicate the number of ODBC connections that can be cached without having to close existing connections. The default is 5. PRGRS_CONNECT Passes a connection string to the ODBC driver. PRGRS_DATEPART_OVERRIDE Specifies the date component used to override the current date when an MSS Time column is converted to an OpenEdge DATETIME data type. PRGRS_IDBUF Specifies the number of keys in the scrolling buffer. The value must be greater than 0. The default value is 25 keys. This parameter applies to all nonlookahead cursors. PRGRS_LOCK_ERRORS Specifies that when an application gets the stated error message, standard ABL error-handling behavior occurs (that is, OpenEdge waits and retries rather than halting). Valid values are native ODBC data source error message numbers. PRGS_LOGGINGLEVEL Specifies the level at which log entries are written. For more information, see the “Analyzing performance with the Enhanced Logger” section on page 6–18.
Tuning your environment with the –Dsrv startup parameter Table 8–2: DataServer options (2 of 3) Option Description PRGS_LOGENTRYTYPES Specifies one or more types of log entries. For more information, see the “Analyzing performance with the Enhanced Logger” section on page 6–18. PRGRS_MAX_BLOCKSIZE Specifies the size in bytes of the total allowable memory for all block cursors. By default, this value is set to ODBC_DEF_MAXBLOCKSZ, or 1MB. PRGRS_MINBUF Specifies the minimum size of the buffer used to get data from the DataServer. Use this keyword only with drivers that fail to fetch large records. The default value is 500 bytes. If you specify a value smaller than the default, OpenEdge uses the default value. The optimal setting for PRGRS_MINBUF is the size of the largest record data size plus 500 bytes. This can prevent run-time record expansion during the retrieval of query results. Note: Do not use this option when the -Dsrv BINDING switch is set to 3. With the binding set to 3, the size of the data is known, and this switch will cause the allocation of unneeded additional memory. PRGRS_NATIVE_LOCKWAIT Specifies the server-based wait period in which the server will block wait for access to a locked resource before returning to a MSS DataServer client application. The default value is zero, meaning that control is returned to the client immediately upon receiving a lock condition from the server. Note: A number of milliseconds is recommended at startup for transactional applications that anticipate a higher contention for server resources. The optimal value is application-specific. PRGRS_NO_INDEX Suppresses index creation at schema import time. If you specify a value of 1 for -Dsrv PRGRS_NO_INDEX, you must create the indexes manually in the schema holder. PRGRS_PREPCACHE Specifies the maximum number of prepared statements to be kept in cache. The default value is 20 statements. PRGRS_TABLE_BLOCKSIZE Specifies the total amount of memory allowed for block cursor use per table. The default value is ODBC_DEF_TABBLOCKSZ, 65,000 bytes. 8–5
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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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Loading result sets into temp-table
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Details about a dynamic temp-table
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Handling errors • If you try to e
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ROWID Support It is important to no
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ROWID Support If the table uses com
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DEFINE VARIABLE hSendSQL AS HANDLE
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Additional Features to Enhance Data
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Enhancements overview For installat
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Firehose and Fast Forward-Only Curs
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• Lowest connection value • Num
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Query tuning Query tuning How you s
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LOOKAHEAD NO-LOOKAHEAD SEPARATE-CON
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Caching records Caching records The
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Join by SQLDB FOR EACH customer, EA
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Modifying the run-time schema check
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Configuring the DataServer 5 Config
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DataServer components Table 5-1: In
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Configuring a local DataServer Conf
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Configuring a remote DataServer 5.
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Configuring a remote DataServer For
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Configuring a remote DataServer Whe
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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 4. Start t
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Creating a schema holder Table 5-4
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Creating a schema holder You can al
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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 Starti
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Starting a remote DataServer For ex
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Connecting a schema holder Connecti
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Direct Connect (-DirectConnect) Pas
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Note the following command syntax u
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Use the PRGRS_CONNECT parameter in
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Connecting a schema holder Table 6-
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Connecting a schema holder 3. The v
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Connecting a schema holder Note: Ap
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Page 233 and 234: Updating a schema holder Updating a
Page 235 and 236: Verifying a schema holder Verifying
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Page 257 and 258: Defining the ROWID Modifying a sche
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Page 265 and 266: Troubleshooting This chapter descri
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Page 275 and 276: SVUB,x—the Unified Broker Server
Page 277 and 278: Adjusting values Tuning your enviro
Page 279 and 280: Migration Issues A This appendix di
Page 281 and 282: Modifying your application Note the
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Page 285 and 286: Server Related Command Line Utiliti
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Page 295 and 296: Syntax Parameters service-name PROB
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Page 299 and 300: Data Type Details C This appendix s
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Page 303 and 304: Using qt_debug to Analyze Performan
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Page 307 and 308: Data types 2-17, C-1 changing 7-34
Page 309 and 310: K Key buffer troubleshooting 8-8 Ke
Page 311 and 312: Progress Explorer Framework 5-23 an
Page 313 and 314: Service Name (-S) shutdown paramete
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