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  • UdaWikiWeb.MTAgentConfigurationDBMSVariables(Last) -- Owiki? , 2016-08-19 15:00:30 Edit owiki 2016-08-19 11:00:30

    Database Agent Environment Settings found in the Broker Rulebook


    Common Agent Environment Settings

    Variable Default Setting Description
    CURSOR_SENSITIVITY LOW Enables or disables the row version cache used with dynamic cursors. When dynamic cursor sensitivity is set high, the Cursor Library calculates checksums for each row in the current rowset and compares these with the check-sums (if any) already stored in the row version cache for the same rows when fetched previously. If the check-sums differ for a row, the row has been updated since it was last fetched and the row status flag is set to SQL_ROW_UPDATED. The row version cache is then updated with the latest check-sums for the rowset. From the user's point of view, the only visible difference between the two sensitivity settings is that a row status flag can never be set to SQL_ROW_UPDATED when the cursor sensitivity is low. (The row status is instead displayed as SQL_ROW_SUCCESS.) In all other respects, performance aside, the two settings are the same. Deleted rows don't appear in the rowset. Updates to the row since the row was last fetched are reflected in the row data, and inserted rows appear in the rowset, if their keys fall within the span of the rowset. If your application does not need to detect the row status SQL_ROW_UPDATED, you should leave the 'High Cursor Sensitivity' checkbox unchecked, as performance will be impacted. The calculation and comparison of check-sums for each row fetched carries an overhead. If this option is enabled, the table oplrvc must have been created beforehand using the appropriate script for the target database.

    DB2

    Variable Default Setting Description
    DB2DIR /DB2 Full path to the base directory for the DB2 installation. Note: DB2 version 5 and below use the environment variable DB2PATH instead.
    DB2INSTANCE DB2 Name of the instance you want to connect to. DB2 is the default DB2 instance name.

    Informix 5

    Variable Default Setting Description
    INFORMIXDIR /dbs/informix5 Full path to the base directory for the Informix 5 installation.
    TBCONFIG tbconfig Database server configuration file.
    FORCE_ONLINE_DATABASE 1 Force mode to (0) SE or (1) ONLINE.

    Informix 6

    Variable Default Setting Description
    INFORMIXDIR /dbs/informix6 Full path to the base directory for the Informix 6 installation.

    Informix 7+

    Variable Default Setting Description
    INFORMIXDIR /dbs/informix7 Full path to the base directory for the Informix 7 installation.
    INFORMIXSERVER online7 The name of Informix 7 server that you want the agent to attach to. As long as you have I-Connect or I-Net installed, configured, and up-and-running this value can connect your database agent with remote Informix database servers.
    ONCONFIG ONCONFIG Database server configuration file.
    FORCE_ONLINE_DATABASE 1 Force mode: 0 for Standard Engine (SE); 1 for ONLINE.
    DELIMIDENT Y When set to Y, SQL-92 rules are in effect for quoted identifiers and literals. Literals must be wrapped in single-quotes. Identifiers may be wrapped in double-quotes to get around reserved word and reserved character limitations. When set to N, literals may be wrapped in either double- or single-quotes and identifiers may not be wrapped.
    OPL_INF_MULTISESS Y Enables Informix multi-session mode. Y: Each ODBC connection gets its own database session. N: All ODBC connections share a single database connection.
    OPL_SPACEPADCHAR Y Character data from a CHAR column is fetched with trailing spaces retained. The column data is padded up to the column width, if actual content is shorter. N: Trailing spaces will be stripped off.

    Ingres

    Variable Default Setting Description
    II_DATE_FORMAT US Defines the output format for dates as dd-mmm-yyyy. This should not be changed inside the Rule Book since it enables the best compatibility with OpenLink. This will not affect any other Ingres applications.
    II_SYSTEM /dbs Full path to the directory containing the Ingres/ directory, e.g., if your Ingres installation directory is /dbs/Ingres then set this to /dbs.
    ING_SET set lockmode session where readlock

    nolock

    When the Ingres agent is started, the first thing it does is run this command. The command itself makes sure that a simple SELECT statement does not lock all the rows it selects.
    USE_OWNER Y or N Only applicable for Ingres 6.4 databases. If set to Y forces the driver to return the Ingres internal table owner as the schema name for the table, as was necessary for early version of MSQuery.

    ODBC-JDBC Bridge

    Variable Default Setting Description
    JET_SQLSTATISTICSOFF FALSE If it is set to 'TRUE', the function SQLStatistics() returns an empty result set. This helps to resolve the problem with the SQLStatistics() output from some JDBC drivers.
    JET_DROPCATALOGFROMDBMETACALLS FALSE If it is set to 'TRUE', the NULL will be assigned to the field 'Catalog' in the result sets of SQLTables(), SQLColumns() & SQLStatistics() calls.
    JET_DROPSCHEMAFROMDBMETACALLS FALSE If it is set to 'TRUE', the NULL will be assigned to the field 'Schema' in the result sets of SQLTables(), SQLColumns() & SQLStatistics() calls.
    JET_NOSUPPORTOFQUOTEDIDENTIFIER FALSE If it is set to 'TRUE', the call SQLGetInfo(SQL_IDENTIFIER_QUOTE_CHAR) will return the space (" "). This can be used if DBMS doesn't support quoted identifiers as in SELECT * FROM "account".
    PATCHNULLSIZEOFSQLCHAR If DBMS is returning a field of type SQLCHAR or SQLVARCHAR with zero size, the size will be replaced with the value of PATCHNULLSIZEOFSQLCHAR
    OPL_JVM_OPTS List of standard java command line arguments to pass to the JVM on initiation of the session

    Oracle 7

    Variable Default Setting Description
    ORACLE_HOME /dbs/oracle7 The home directory for the Oracle installation.
    ODBC_CATALOGS Y Uncomment after running the "odbccat7.sql" script.
    MULTIPLEX_LDA 5 Allow 5 OpenLink clients via a single database session.
    OPL_USER_TBLS_FIRST N Set to Y to show OpenLink User Tables first.
    SHOW_REMARKS N Set to Y to retrieve SQLColumns REMARKS field.

    Oracle 8i, 9i, 10g, 11g

    Variable Default Setting Description
    ORACLE_HOME /dbs/oracle The home directory for the Oracle installation.
    ODBC_CATALOGS Y Uncomment after loading the "odbccat8.sql" script.
    MULTIPLEX_LDA 5 Allow 5 OpenLink clients via a single database session.
    OPL_USER_TBLS_FIRST N Set to Y to show OpenLink User Tables first.
    SHOW_REMARKS N Set to Y to retrieve SQLColumns REMARKS field.
    OCI_PREFETCH_ROWS 120 Sets the number of rows to be prefetched.
    OCI_PREFETCH_MEMORY 64 Kb of memory allocated for rows to be prefetched.

    Progress

    Variable Default Setting Description
    DLC /dbs/dlc Must be full path to the Progress dlc directory.
    PROCFG /dbs/dlc/progress.cfg Must be the full path and filename to the progress.cfg file. This parameter is optional. Use it if the license file can not be found.
    TABLEVIEW SQL-89 only. Must be the full path and filename to the table view file (tableview.dat). See detailed TABLEVIEW document for more information
    TABLEVIEW_QUALIFIER Y SQL-89 only. Add owner information to SELECT statements.
    DEADLOCK_TIMEOUT 60 Seconds to wait for lock to release.
    INSERT_LOGICAL Y SQL-89 only. Rewrite character TRUE/FALSE to logical.
    UPDATE_LOGICAL Y SQL-89 only. Rewrite character TRUE/FALSE to logical.
    SPACE_QUOTE_IDENTIFIER Y If the SPACE_QUOTE_IDENTIFIER keyword is unset, it defaults to true, i.e., a space is returned as the quote character. To make the driver return an empty string for the quote character, this keyword must be set to N. Most applications work properly with the default behavior (SPACE_QUOTE_IDENTIFIER Y).

    Known exceptions include some versions of Microsoft Visio, the Microsoft SQL Server DTS Wizard, and Business Objects.

    MIN_FIELD_LEN SQL-89 only. Minimum length for character fields or expressions. More details.
    MAX_FIELD_LEN SQL-89 only. Maximum length for character fields or expressions. More details.
    EXPR_PRECISION SQL-89 only. Fixed precision for numeric expressions.
    EXPR_SCALE SQL-89 only. Fixed scale for numeric expressions.

    SQL Server

    Variable Default Setting Description
    FREETDSCONF /opt/openlink/bin/freetds.conf Passes the full path to a local freetds.conf file.
    DSQUERY SQLSERVER Which section will be loaded from the freetds.conf file.
    TDSHOST sqlsrv.example.com DNS-resolvable hostname or IP address for the target SQL Server machine
    TDSPORT 1433 The TCP/IP port on which your SQL Server listens for incoming connections.
    TDSVER 7.0 Sets TDS compatibility. May not match actual SQL Server nor TDS version. See Table #2 for acceptable values.
    SQLSERVER_CATALOG Y

    Sybase

    Variable Default Setting Description
    FREETDSCONF /home/openlink/bin/freetds.conf Passes the full path to a local freetds.conf file.
    DSQUERY SYBASE Which section will be loaded from the freetds.conf file.
    TDSHOST sybhost.example.com DNS-resolvable hostname or IP address for the target Sybase machine.
    TDSPORT 4100 The port on which your Sybase listens for incoming connections.
    TDSVER 5.0 Sets TDS compatibility. May not match actual Sybase nor TDS version. See Table #2 for acceptable values.
    SQLSERVER_CATALOG Y

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