彩票走势图

IBSurgeon FirstAID与其它标准恢复方法一起使用时，它可以修复一个所有情况下超过80%的损坏的数据库。IBSurgeon拥有一个免费的IBFirstAID的诊断专家版本，它可以用于准确地检查实际数据库的状态。它可以分析出您的数据库的底层数据结构并报告出在数据库中可能存在的错误的详细日志。

您可以将诊断日志发送到我们的支持服务，您将得到一个免费的答案告知您的数据库是否可以恢复，是否可以通过IBFirstAid直接恢复，或者我们是否需要执行一些手动的工作以协助其恢复处理过程。如果问题非常严重，我们还将尝试并估算您的数据有多少能够被恢复。

如下可能的损坏IBFirstAID能够修复和纠正。详细如下：

• 内部gds软件一致性检查（找不到提示页面（165））所需要的交易清单已损坏，数据库无法打开。预计在这种情况下，无论gbak或者是gfix都不可能修复您的数据库（除了在一个只读数据库的情况下）。IBFirstAID将修复丢失的页面并恢复数据库。
• 当试图读取数据库文件时出现的针对文件“*.gdb”的未知数据库I/O错误。这通常表示一些数据库页面可能在数据库文件的结尾处丢失（停电？）。在这种情况下数据库无法打开。Gfix不能够修复它。IBFirstAID将重新创建丢失的系统页面并删除错误的指针。
• 数据库文件出现损坏。错误的页面类型。页面NNN是错误的类型（预计X，发现Y）。这些错误能够标示一些问题。但是通常它们是数据库丢失的页面，或者这些被访问的页面不是预计的页面类型。例如，如果预计的页面类型是5，则可能意味着一些数据可能已经在一个表中遭到损坏。例如一个损坏可能阻止一个成功的备份或者可以使数据库无法使用该表。IBFirstAID修正错误的页面指针并修复数据库。
• 错误的记录长度。不能找到旧版本。IBFirstAID在数据库中检查每条记录并尝试修复这些记录级上的错误。
• 页面的丢失能够引起其他数据库损坏。

Using IBFirstAID/FBFirstAID together with other standard recovery means such as the default gfix and gbak utilities it is possible to repair a corrupted database in more than 80% of all cases. IBSurgeon has a free Diagnostician version of IBFirstAID which you can use to accurately check the actual database status. It will analyze the low-level data structures in your database and present you with a detailed log of what may be wrong in the database.

You can send the diagnostic log to our support service for a free answer on whether your database recoverable or not, whether its recoverable by IBFirstAid directly, or whether we need to perform some manual work to assist the recovery process. We will also try and estimate how much of your data can be recovered if there really is a serious problem that will not allow 100% recovery.

There are a number of possible corruptions that IBFirstAID has been designed to repair and correct. These are listed below:

• Internal gds software consistency check (cannot find tip page (165)) The required Transaction Inventory Page is corrupt and the database cannot be opened. It is expected in this instance that neither gbak nor gfix will be able to repair your database (except in the case of a Read Only database). IBFirstAID will repair the missing pages and recover the database.
• Unknown database I/O error for file "*.gdb" Error while trying to read from the database file. This usually indicates that a number of database pages have probably been lost at the end of the database file (power failure?). In this instance the database cannot be opened. Gfix cannot repair this. IBFirstAID will recreate the missing system pages and deletes the wrong pointers.
• Database file appears corrupt. Wrong page type. Page NNN is of wrong type (expected X, found Y) This error can indicate a number of problems. But typically there are missing pages in the database, or the page that is being accessed is not the expected page type. For example, if the expected page type is 5, it can mean that some data may have been corrupted within a table. Such a corruption may prevent a sucessful backup backup or may make the table unavailable to the database. IBFirstAID fixes the wrong page pointers and repairs the database.
• Wrong record length. Cannot find backversion. IBFirstAID will check every record in database and will try and repair these record-level errors.
• Other database corruptions can be caused by lost pages.

For those who don't want to experience corruption again, we offer protection and maintenance tool Firebird DataGuard now.