Method _execute_reflection

lib/sqlalchemy/dialects/oracle/base.py:2285–2311

(
        self, connection, query, dblink, returns_long, params=None
    )

            return "READ COMMITTED"

    def _execute_reflection(
        self, connection, query, dblink, returns_long, params=None
    ):
        if dblink and not dblink.startswith("@"):
            dblink = f"@{dblink}"
        execution_options = {
            # handle db links
            "_oracle_dblink": dblink or "",
            # override any schema translate map
            "schema_translate_map": None,
        }

        if dblink and returns_long:
            # Oracle seems to error with
            # "ORA-00997: illegal use of LONG datatype" when returning
            # LONG columns via a dblink in a query with bind params
            # This type seems to be very hard to cast into something else
            # so it seems easier to just use bind param in this case
            def visit_bindparam(bindparam):
                bindparam.literal_execute = True

            query = visitors.cloned_traverse(
                query, {}, {"bindparam": visit_bindparam}
            )
        return connection.execute(
            query, params, execution_options=execution_options
        )

    @util.memoized_property
    def _has_table_query(self):