Oracle Instant Client Odbc //top\\ | UPDATED • TIPS |

The ODBC driver does not speak to the database directly. It translates standard ODBC handles (HENV, HDBC, HSTMT) into OCI handles (OCIEnv, OCISvcCtx, OCIStmt). This means any bug or performance characteristic of the underlying OCI layer—such as its famous memory management or its handling of Unicode—directly impacts the ODBC driver.