To resolve this, open the file /opt/cdata/cdata-driver-for-excel/lib/ in a text editor and set the encoding.
In Linux environments, Oracle uses UTF-8 to communicate with the unixODBC Driver manager, whereas the default driver encoding is UTF-16. SQL Developer uses this table to test the connection. Set this property to mock the Oracle DUAL table. Set this property to restrict the maximum column size to 4000 characters. You can use this property to avoid the ORA-28528 Heterogeneous Services data type conversion error when the Unicode type is returned. By default, the driver uses SQL_WVARCHAR to accommodate various international character sets. Set this property to map string data types to SQL_VARCHAR instead of SQL_WVARCHAR. For compatibility with Oracle, you will need to set the following connection properties, in addition to authentication and other required connection properties. Set the following properties when working with Excel data in SQL*Plus and SQL Developer. The driver provides several connection properties that streamline accessing Excel data just as you would an Oracle database. Set Connection Properties for Compatibility with Oracle You can modify the DSN by editing the system data sources file ( /etc/odbc.ini) and defining the required connection properties.Įxcel File = 'C:/MyExcelWorkbooks/SampleWorkbook.xlsx'įor specific information on using these configuration files, please refer to the help documentation (installed and found online). If you are installing the CData ODBC Driver for Excel in a Linux environment, the driver installation predefines a system DSN. You can access and create 32-bit DSNs on a 64-bit system by opening the 32-bit ODBC Data Source Administrator from C:\Windows\SysWOW64\odbcad32.exe. Note: If you need to modify the DSN or create other Excel DSNs, you must use a system DSN and the bitness of the DSN must match your Oracle system. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs. This is the last step of the driver installation. If you have not already, first specify connection properties in an ODBC DSN (data source name). The ExcelFile, under the Authentication section, must be set to a valid Excel File.
Information for connecting to Excel follows, along with different instructions for configuring a DSN in Windows and Linux environments. You can also create the database link and execute queries from SQL Developer.
This article shows how to use the CData ODBC Driver for Excel to create a database link from Excel to Oracle and to query Excel data through the SQL*Plus tool. The Oracle Database Gateway for ODBC and Heterogeneous Services technology enable you to connect to ODBC data sources as remote Oracle databases.