rm-datasource/src/main/java/org/apache/seata/rm/datasource/undo/AbstractUndoLogManager.java [132:148]:
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    public void deleteUndoLog(String xid, long branchId, Connection conn) throws SQLException {
        try (PreparedStatement deletePST = conn.prepareStatement(DELETE_UNDO_LOG_SQL);
             PreparedStatement deleteSubPST = conn.prepareStatement(DELETE_SUB_UNDO_LOG_SQL)) {
            deletePST.setLong(1, branchId);
            deletePST.setString(2, xid);
            deletePST.executeUpdate();

            deleteSubPST.setString(1, UndoLogConstants.BRANCH_ID_KEY + CollectionUtils.KV_SPLIT + branchId);
            deleteSubPST.setString(2, xid);
            deleteSubPST.executeUpdate();
        } catch (Exception e) {
            if (!(e instanceof SQLException)) {
                e = new SQLException(e);
            }
            throw (SQLException) e;
        }
    }
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rm-datasource/src/main/java/org/apache/seata/rm/datasource/undo/dm/DmUndoLogManager.java [65:81]:
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    public void deleteUndoLog(String xid, long branchId, Connection conn) throws SQLException {
        try (PreparedStatement deletePST = conn.prepareStatement(DELETE_UNDO_LOG_SQL);
             PreparedStatement deleteSubPST = conn.prepareStatement(DELETE_SUB_UNDO_LOG_SQL)) {
            deletePST.setLong(1, branchId);
            deletePST.setString(2, xid);
            deletePST.executeUpdate();

            deleteSubPST.setString(1, UndoLogConstants.BRANCH_ID_KEY + CollectionUtils.KV_SPLIT + branchId);
            deleteSubPST.setString(2, xid);
            deleteSubPST.executeUpdate();
        } catch (Exception e) {
            if (!(e instanceof SQLException)) {
                e = new SQLException(e);
            }
            throw (SQLException) e;
        }
    }
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