graphdb/src/main/java/com/tinkerpop/blueprints/impls/orient/OrientBaseGraph.java
public void shutdown(boolean closeDb, boolean commitTx) {
    makeActive();

    try {
      if (!isClosed()) {
        if (commitTx) {
          final OStorage storage = getDatabase().getStorage().getUnderlying();
          if (storage instanceof OAbstractPaginatedStorage) {
            if (((OAbstractPaginatedStorage) storage).getWALInstance() != null)
              getDatabase().commit();
          } else {
            getDatabase().commit();
          }
        } else if (closeDb) {
          getDatabase().rollback();
        }
      }

    } catch (ONeedRetryException e) {
      throw e;
    } catch (RuntimeException e) {
      OLogManager.instance().error(this, "Error during context close for db " + url, e);
      throw e;
    } catch (Exception e) {
      OLogManager.instance().error(this, "Error during context close for db " + url, e);
      throw OException.wrapException(new ODatabaseException("Error during context close for db " + url), e);
    } finally {
      try {
        if (closeDb) {
          getDatabase().close();
          if (getDatabase().isPooled()) {
            database = null;
          }
        }
        pollGraphFromStack(closeDb);
      } catch (Exception e) {
        OLogManager.instance().error(this, "Error during context close for db " + url, e);
      }
    }

    url = null;
    username = null;
    password = null;

    if (!closeDb)
      getDatabase().activateOnCurrentThread();
  }
public void shutdown(boolean closeDb, boolean commitTx) {
    makeActive();

    try {
      if (!isClosed()) {
        if (commitTx) {
          final OStorage storage = getDatabase().getStorage().getUnderlying();
          if (storage instanceof OAbstractPaginatedStorage) {
            if (((OAbstractPaginatedStorage) storage).getWALInstance() != null)
              getDatabase().commit();
          } else {
            getDatabase().commit();
          }
        } else if (closeDb) {
          getDatabase().rollback();
        }
      }

    } catch (ONeedRetryException e) {
      throw e;
    } catch (RuntimeException e) {
      OLogManager.instance().error(this, "Error during context close for db " + url, e);
      throw e;
    } catch (Exception e) {
      OLogManager.instance().error(this, "Error during context close for db " + url, e);
      throw OException.wrapException(new ODatabaseException("Error during context close for db " + url), e);
    } finally {
      try {
        if (closeDb) {
          getDatabase().close();
          if (getDatabase().isPooled()) {
            database = null;
          }
        }
        pollGraphFromStack(closeDb);
      } catch (Exception e) {
        OLogManager.instance().error(this, "Error during context close for db " + url, e);
      }
    }

    url = null;
    username = null;
    password = null;

    if (!closeDb)
      getDatabase().activateOnCurrentThread();
  }
Closes the Graph. After closing the Graph cannot be used.