备份还原因多用户模式错误而失败

Question

我有一个脚本可以自动从备份中恢复数据库。我的脚本首先停止所有应用程序服务器实例，停止所有数据库，然后从备份中恢复。下面是伪代码：

foreach appserver:
    asbman -name (appserver) -stop

foreach database:
    dbman -name (database) -stop

proutil database.db -C enablelargefiles
echo y | prorest database.db backup.bak -verbose

一旦我的脚本执行到 prorest 命令，它就会输出以下错误：

** The database D:\Directory\Wrk\db\database is in use in multi-user mode. (276)

等待约 60 秒后，运行 prorest 命令再次按预期执行，数据库已正确恢复。我的猜测是，在数据库停止后，有一些与数据库相关的进程仍然运行。我想找到解决这个问题的方法，而不必使用诸如睡眠重试之类的方法来确定数据库何时能够恢复。这个问题有没有解决办法，或者有更好的方法可以这样恢复数据库吗？

Answer 1

有一些超时可以发挥作用：

When an unconditional batch shutdown runs (PROSHUT -by), the following sequence of events takes place:

If there are any running processes left after:

30 Seconds - wake up clients waiting for locks.

60 Seconds - wake up clients waiting for locks.

90 Seconds - wake up clients waiting on screen input.

5 Minutes - Resend the shutdown signal to remaining clients.

10 Minutes - Send a terminate (SIGTERM) signal to remaining clients.

更多信息在这里： http://knowledgebase.progress.com/articles/Article/P3222

您可以跟踪 database.lg 文件并查找告诉您数据库已关闭的消息：

[2017/02/06@20:20:56.353+0100] P-14292      T-13420 I SHUT    5: (542)   Server shutdown started by Jens on CON:.
[2017/02/06@20:20:56.499+0100] P-10276      T-11404 I BROKER  0: (15193) The normal shutdown of the database will continue for 10 Min 0 Sec if required.
[2017/02/06@20:20:56.499+0100] P-10276      T-11404 I BROKER  0: (2248)  Begin normal shutdown
[2017/02/06@20:20:57.499+0100] P-10276      T-11404 I BROKER  0: (2263)  Resending shutdown request to 0 user(s).
[2017/02/06@20:21:01.692+0100] P-10276      T-11404 I BROKER  0: (15109) At Database close the number of live transactions is 0.
[2017/02/06@20:21:01.692+0100] P-10276      T-11404 I BROKER  0: (15743) Before Image Log Completion at Block 1 Offset 5300.
[2017/02/06@20:21:01.693+0100] P-10276      T-11404 I BROKER  0: (453)   Logout by Jens on CON:.
[2017/02/06@20:21:01.694+0100] P-10276      T-11404 I BROKER   : (16869) Removed shared memory with segment_id: 50528256
[2017/02/06@20:21:01.694+0100] P-10276      T-11404 I BROKER   : (334)   Multi-user session end.
[2017/02/06@20:21:02.356+0100] P-14292      T-13420 I SHUT    5: (453)   Logout by Jens on CON:.

(334) 消息基本上是在告诉您数据库已关闭。

另一种选择是检查数据库锁定文件 (database.lk)。仅当数据库为运行:

时才存在

...
2017-02-06  20:21         2 228 224 mySportsDb.b1
2017-02-06  20:21         1 703 936 mySportsDb.d1
2017-02-06  20:21            32 768 mySportsDb.db
2017-02-06  20:21            89 643 mySportsDb.lg
2017-02-06  18:00               920 mySportsDb.lic
2017-02-06  20:26               265 mySportsDb.lk
...

还有几个脚本可以运行检查数据库的状态。在这里查看更多：

http://knowledgebase.progress.com/articles/Article/P136887

备份还原因多用户模式错误而失败

Backup restore fails on multi-user mode error

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