Function dpiConn_getServerVersion 

pub unsafe extern "C" fn dpiConn_getServerVersion(
    conn: *mut dpiConn,
    releaseString: *mut *const c_char,
    releaseStringLength: *mut u32,
    versionInfo: *mut dpiVersionInfo,
) -> c_int

Returns the version information of the Oracle Database to which the connection has been made.

The function returns DPI_SUCCESS for success and DPI_FAILURE for failure.