@Override public void startUpdate(final MainOptions opts) throws IOException { if (!table.lock(true)) throw new BaseXException(Text.DB_PINNED_X, meta.name); if (opts.get(MainOptions.AUTOFLUSH)) { final IOFile uf = meta.updateFile(); if (uf.exists()) throw new BaseXException(Text.DB_UPDATED_X, meta.name); if (!uf.touch()) throw Util.notExpected("%: could not create lock file.", meta.name); } }