Pervasive-Database 中 SQl_satements 的问题

Question

声明

从 MWlog 中选择 *

正常工作

while 语句：

select * from MWlog where Probe= '230541'

出现以下错误：

提示： 我们使用 Zen 版本：

Zen 控制中心

Zen 安装版本 14.10.035。

Java 版本 1.8.0_222。

版权所有 © 2020 Actian Corporation

老版本也会出现同样的错误：

Answer 1

如果仅在使用“Probe”字段时发生，则索引可能已损坏。我建议重建文件。您可以使用 BUTIL -CLONE 和 -COPY 命令或重建实用程序。我更喜欢 BUTIL -CLONE/COPY。

状态 2 定义为（https://docs.actian.com/zen/v14/index.html#page/codes%2F1statcod.htm%23ww178919）：

2: The application encountered an I/O error This status code typically indicates a corrupt file, an error while reading from or writing to the disk. One of the following has occurred: 
• The file is damaged, and you must recover it. See Advanced Operations Guide for more information on recovering files. •For pre-v6.0 data files, there is a large pre-image file inside a transaction, and there is not enough disk space for a write to the pre-image file. 
• For pre-v6.0 data files, there is one pre-image file for multiple data files. For example, if you name the data files customer.one and customer.two, both files have pre-image files named customer.pre. 
• For pre-v6.0 data files that are larger than 768 MB, there is a conflict among locking mechanisms. The file has not been corrupted. Your application can retry the operation until the conflict is resolved (when the competing application releases the lock your application requires). 
• A pre-v6.0 Btrieve engine attempted to open a v6.x or later MicroKernel file. 
• With Btrieve for Windows NT Server Edition v6.15.445, 32 bit Windows application may return Status 2 or “MKDE Terminated with Service Specific Error 0” after running an application for an extended period of time.