有人在Oracle JDBC驱动程序中看到此NPE吗? [英] Has anyone seen this NPE in Oracle JDBC driver?

问题描述

我们可能很快就会跟踪驱动程序，但是我想知道是否有人看到过该驱动程序.某些(3rd-party-library)代码对从Oracle JDBC驱动程序获得的结果集执行rs.next()，然后调用rs.getLong()从NUMBER列中获取long.多年来，所有这些功能对于各种版本的Oracle，JDBC，OS等都运行良好，但是在一台特定的计算机上，Oracle 12.1.0.2和ojdbc7 jar用于该确切版本(12.1.0.2，来自 http://www.oracle.com/technetwork/database/features/jdbc/default-2280470.html )，则会发生以下异常:

We are going to be tracing the driver soon probably, but I wonder if someone has seen this. Some (3rd-party-library) code performs rs.next() on a resultset obtained from Oracle JDBC driver, and then calls rs.getLong() to get a long from a NUMBER column. All of this was working just fine for variety of versions of Oracle, JDBC, OSes, etc. for years, but on a particular machine, with Oracle 12.1.0.2 and ojdbc7 jar for that exact version (12.1.0.2, from http://www.oracle.com/technetwork/database/features/jdbc/default-2280470.html), the following exception happens:

java.lang.NullPointerException
    at java.lang.System.arraycopy(Native Method)
    at oracle.jdbc.driver.DynamicByteArray.get(DynamicByteArray.java:350)
    at oracle.jdbc.driver.NumberCommonAccessor.getLong(NumberCommonAccessor.java:546)
    at oracle.jdbc.driver.GeneratedStatement.getLong(GeneratedStatement.java:228)
    at oracle.jdbc.driver.GeneratedScrollableResultSet.getLong(GeneratedScrollableResultSet.java:564)

不幸的是，ojdbc不是开源的. 这是一个已知的问题? 有其他替代的jdbc驱动程序可以尝试吗?

Unfortunately ojdbc is not open source. Is this a known issue? Is there some alternative jdbc driver to try?

推荐答案

您正在使用哪个版本的Oracle JDBC瘦驱动程序?在版本12.10.0.1中，有一个错误产生了与您相似的异常.它已在12.1.0.2.中修复.这样看来，升级驱动程序可能可以解决您的问题.

Which version of the Oracle JDBC thin driver are you using? There was a bug that produced an exception similar to yours in version 12.1.0.1. It was fixed in 12.1.0.2. So it looks like an upgrade of your driver might resolve your problem.

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