Oracle Odbc -

Once installed, you typically configure a DSN through the ODBC Data Source Administrator:

This article explores the Oracle ODBC driver, its architecture, how to install it, and best practices for configuration. oracle odbc

The bit-version of the driver must match the bit-version of the application. If you are running 32-bit Microsoft Access, you must install the 32-bit Oracle ODBC driver, even if your Windows OS is 64-bit. Once installed, you typically configure a DSN through

# Execute a query cursor.execute("SELECT * FROM my_table") # Execute a query cursor

| Error | Likely Cause | Solution | |-------|--------------|----------| | ORA-12154: TNS could not resolve | Missing or wrong TNS entry | Check tnsnames.ora location or use Basic connection | | ORA-12541: No listener | DB host/port wrong or listener down | Verify network, firewall, and listener status | | Driver manager can't find driver | PATH not set or driver not installed | Re-run odbc_install.exe and verify PATH | | Unicode data truncated | Character set mismatch | Set NLS_LANG=AMERICAN_AMERICA.AL32UTF8 | | Performance too slow | No array fetch size set | Configure FetchBufferSize=100 in DSN |