java - 我在向数据库插入记录时遇到 java 堆空间错误？

Question

我在尝试将记录插入数据库时​​遇到 java 堆空间错误。我不确定 Oracle 为什么能够消耗堆以及为什么它消耗这么多。错误发生在这一行:

 Connection con       = null;
    PreparedStatement ps = null;
    ResultSet rs         = null;
    String sqlString     = null;
    DaoUtility dUtil     = DaoUtility.getInstance();

    try
    {
      con = dUtil.getConnection();
      . . .
      dUtil.executeUpdate(ps);

这是日志:

java.lang.OutOfMemoryError: Java heap space at java.lang.reflect.Array.newArray(Native Method) at java.lang.reflect.Array.newInstance(Array.java:52) at oracle.jdbc.driver.BufferCache.get(BufferCache.java:226) at oracle.jdbc.driver.PhysicalConnection.getCharBuffer(PhysicalConnection.java:7643) at oracle.jdbc.driver.OraclePreparedStatement.setupBindBuffers(OraclePreparedStatement.java:2949) at oracle.jdbc.driver.OraclePreparedStatement.processCompletedBindRow(OraclePreparedStatement.java:2355) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3571) at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3657) at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1350) at weblogic.jdbc.wrapper.PreparedStatement.executeUpdate(PreparedStatement.java:172)

Answer 1

Oracle JDBC 驱动程序因内存消耗而臭名昭著。请阅读 configuration parameters可供您控制其内存消耗。特别注意您的情况的 oracle.jdbc.maxCachedBufferSize。