Function dpiStmt_release 

pub unsafe extern "C" fn dpiStmt_release(stmt: *mut dpiStmt) -> c_int

Releases a reference to the statement. A count of the references to the statement is maintained and when this count reaches zero, the memory associated with the statement is freed and the statement is closed if that has not already taken place using the function dpiStmt_close().

The function returns DPI_SUCCESS for success and DPI_FAILURE for failure.