The change has been done to increase the performance of ODBC Driver for stored procedure calls.To use an ODBC enabled application the following software is required in addition to the Oracle ODBC Driver.
Microsoft Odbc For Oracle Setup Driver For StoredIf an existing application uses ODBC TIMESTAMP data type and the database column is TIMESTAMP, the current behavior is preserved. This behavior is transparent to the users application, requiring no change to the ODBC application. See Oracle Database PLSQL Packages and Types Reference and Oracle Database SQL Language Reference for information about creating 32 KB columns. This enables non-Oracle database SQL statements to run against Oracle Database. For using this feature with an ODBC application, you must specify the service name, which was created as part of SQL Translation Framework setup, as the ServerName entry in the odbc.ini file. If you require support for translation of Oracle errors (ORA errors) to your the native database, once your application starts running against Oracle Database, then you must enable the SQLTranslateErrorsT entry in the odbc.ini file. This support eases any third party ODBC application, which migrated to Oracle and wants to use this same functionality that was provided by their previous vendors. Microsoft Odbc For Oracle Setup Driver Specific HeaderYou can use this feature by including Oracle ODBC driver specific header file sqora.h in the application. See Oracle Call Interface Programmers Guide for more information about auto increment. This property is read only and returns SQLTRUE if the column is auto increment; otherwise, it returns SQLFALSE. This identifier returns SQLULEN value, which has all the column properties, shown as follows. To do this, the maximum size of LONG data ( MaxLargeData ) has to be set in registry on Windows (also need to add the registry key MaxLargeData in the DSN), and in odbc.ini file on UNIX platforms manually. This enhancement has improved the performance of Oracle ODBC driver up to 10 times, depending on the MaxLargeData size set by the user. The maximum value for MaxLargeData that can be set by the user is 64 KB (65536 bytes). Even if the value of MaxLargeData is set to some value greater than 65536, the data fetched will be 65536 bytes only. If a user has LONG and LONG RAW data in database, which is greater that 65536 bytes, MaxLargeData should be set to 0 (the default value), which will result in single row fetch and the complete LONG data can be fetched. In case the user has passed the buffer less than MaxLargeData size in non-polling mode, the data truncation error will occur if LONG data size in the database is greater than the buffer size. ![]() Oracle ODBC Driver now allows user to specify the option to select whether to use RULE Hint in catalog APIs. The change has been done to increase the performance of ODBC driver for catalog APIs. The default value for the option is TRUE which means that RULE Hint will not be used in catalog APIs by default. Bug4150034). By introducing Column Binding for NUMBER Column as FLOAT when the column contains FLOAT data speeds up the query execution that uses bind variables as FLOAT. Bug4608183). By implementing the support for OCI Statement Caching option, Oracle ODBC Driver will see the increase in performance where users have to parse the same statement multiple times in the same connection. Oracle ODBC Driver now allows application to specify the parameters to a stored procedure by name, in the procedure call. Named parameters are only to be used in calls to stored procedures, and not to be used in other SQL statements. Bug3617324).
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