Enable Thread Safety - Thread safety can be disabled for a data source. If thread safety is not required, disabling this option eliminates the overhead of using thread safety. By default, thread safety is enabled.
Batch Autocommit Mode - By default, commit is executed only if all statements succeed. Numeric Settings - Allows you to choose the numeric settings that determine the decimal and group separator characters when receiving and returning numeric data that is bound as strings. The following list is an explanation of the fields found on the Oracle Options tab shown in the preceding graphic:. Fetch Buffer Size - The amount of memory used to determine how many rows of data the ODBC Driver prefetches at a time from an Oracle database regardless of the number of rows the application program requests in a single query.
However, the number of prefetched rows depends on the width and number of columns specified in a single query. Applications that typically fetch fewer than 20 rows of data at a time improve their response time, particularly over slow network connections or to heavily loaded servers.
Setting Fetch Buffer Size too high can make response time worse or consume large amounts of memory. There is a small performance penalty for insert and update statements when LOBs are enabled.
Enable Statement Caching - Enables statement caching feature, which increases the performance of parsing the query, in case the user has to parse the same text of query and related parameters multiple times.
The default is disabled. The default cache buffer size is 20 that are used only if statement caching option is enabled. Setting cache buffer size to 0 disables statement caching feature. The default size is 8 KB bytes. The maximum value that can be set is KB bytes. Translate ORA errors - Any migrated third party ODBC application, which is using the SQL Translation Framework feature, expects that errors returned by the server to be in their native database format, then users can enable this option to receive native errors based on the error translation registered with SQL Translation Profile.
Convert Empty String - Any third party ODBC application that is migrated to Oracle Database requires handling empty string data Oracle Database does not handle empty string data in table columns , then they can enable this option so that the application can insert empty string data or retrieve empty string data. This feature is not implemented for Oracle Database 12 c Release 1 Enable this option to configure additional failover retries. The default is enabled. Retry - The number of times the connection failover is attempted.
The default is 10 attempts. Delay - The number of seconds to delay between failover attempts. The default is 10 seconds. The following list is an explanation of the fields found on the Workarounds Options tab shown in the preceding graphic:.
This support is disabled by default. ODBC calls made by the application to specifically change the value of the attribute after connection time are unaffected by this option and complete their functions as expected. By default, this option is off. This enhancement improves the performance of Oracle ODBC driver up to 10 times, depending on the prefetch size set by the user.
The default value is 0. The maximum value that you can set is 64 KB bytes. If the value of prefetch size is greater than , the data fetched is only bytes. If you pass a buffer size less than the prefetch size in nonpolling mode, a data truncation error occurs if the LONG data size in the database is greater than the buffer size. By default, this function is enabled. A subprogram call specified in an EXEC statement is translated to its equivalent Oracle subprogram call before being processed by an Oracle database server.
By default this option is disabled. Schema , which is the translated Oracle subprogram assumed to be defined in the user's default schema. However, if all subprograms from the same SQL Server database are migrated to the same Oracle schema with their database name as the schema name, then set this field to database.
If all subprograms owned by the same SQL Server user are defined in the same Oracle schema, then set this field to owner. This field is empty by default. An Oracle server waits indefinitely for lock conflicts between transactions to be resolved. The value you enter for the LockTimeOut parameter is the number of seconds after which an Oracle server times out if it cannot obtain the requested locks. In the following example, the Oracle server times out after 60 seconds:. Connecting to an Oracle Data Source.
As part of the connection process, an application can prompt you for information. If an application prompts you for information about an Oracle data source, do the following:. An application must connect to a data source to access the data in it. Different applications connect to data sources at different times.
For example, an application might connect to a data source only at your request, or it might connect automatically when it starts. For information about when an application connects to a data source, see the documentation for that application. Data Source Configuration Options. Expired Password Behavior. If you try to connect to the database and your password has expired, you are prompted to change your password. Upon making a successful password change, you are connected to the database.
Instead, an error condition results, producing an error message and number that indicates that the password has expired. Implementation of Data Types Advanced.
Limitations on Data Types. In addition to Oracle's grammar, the vendor-specific escape sequences outlined in Appendix C of the ODBC specifications are also supported. Data Types for advanced users. Implementation of Data Types Programming. Floating Point Data Types.
When connected to a Table describes these limitations. The limiting factor is the client workstation memory. Oracle database allows only a single long data column per table. The driver derives this information both from errors detected by the driver and errors returned by the Oracle server. Native Error. Error Message. For errors that occur in the data source, the Oracle ODBC Driver returns an error message based on the message returned by the Oracle server. The prefixes in brackets [ ] identify the source of the error.
When the error occurs in the data source, the [vendor] and [ODBC-component] prefixes identify the vendor and name of the ODBC component that received the error from the data source. For example, if the error message does not contain the [Ora] prefix shown in the following format, the error is an Oracle ODBC Driver error and should be self-explanatory.
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Created by admin , last modified by AdrianC on Sep 25, Ensure the View by is set to Small icons. Access the list of programs that are installed on your computer. Right-click your AccountRight shortcut on the desktop and choose Open file location. Related topics. It discusses the following topics:. If you delete an Oracle home manually for example, by deleting the directory structure with Windows NT Explorer , the components in that Oracle home remain registered in the Oracle Universal Installer inventory.
If you then attempt an installation in the same Oracle home, some or all of the components selected may not be installed because Oracle Universal Installer determines they are already installed.
Note : Manual removal of components is permitted only if you exit Oracle Universal Installer during an installation. The following actions prevent Oracle Universal Installer from registering the installation in its inventory. Choosing Cancel Turning off the computer Not completing the installation that is, all required configuration tools do not run at the end Before restarting the installation, you may have to manually remove files that were installed before the installation was aborted.
If you want to deinstall any of the following components, you must first stop all Oracle Windows NT services and remove the registry entries for their services, as detailed in Table After completing these procedures, go to "Task 2: Deinstall Components with Oracle Universal Installer" to complete deinstallation.
You must first stop the Oracle Windows NT services before removing any registry entries.
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