首先来看看oracle data block整体结构:
下面我们通过BBED工具来研究数据块的结构,map看到的是一个data block整体结构
BBED> map
File: /data/oracle/oradata/ora10g/system01.dbf (0)
 
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2011-07-27 14:40:03
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In this tutorial you will learn to copy the records from one data block to another data block on same form and on a same canvas in Oracle Forms. Below is the screen shot of the form and you can dow...
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2021-07-21 11:35:04
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ORA-01578:Oracle data block corrupted(file # num,block # num)
数据坏块数据仓库的解决方法分析产生这种问题的原因 1、 十之八九这个Oracle的数据库server打开了异步I/O(async io)或增加了写进程。 2、 硬件的I/O出现了错误。
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2010-01-29 18:03:48
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####<Dec 5, 2011 6:14:02 AM GMT> <Error> <Webex-/ec0605lc> <psowls.qa.webex.com> <MyServer-1> <ExecuteThread: '21' for queue: 'weblogic.kernel.Default'> <<ano
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2011-12-05 14:42:18
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Example is given below to sort detail data block data (toggle asc or desc) with push buttons used as header of grid, by setting ORDER_BY property of data block using SET_BLOCK_PROPERTY command. The ...
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2021-07-21 11:35:43
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今天在实验的机子的oracle上的一张表中批量插入5000000条记录,在插入过程中途发生了表空间不够的情况,导致插入终止,在表空间上添加一个数据文件,对表中的数据进行查询,发生如下的错误:
SQL> select count(*) from book;
select count(*) from book
ORA-01578: ORACLE data b
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2010-09-13 11:05:11
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Example is given below to create a data block based on From Clause query in Oracle Forms. The following are the steps: Create a data block manually and set the following properties: You can spe...
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2021-07-21 11:35:46
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You have an Oracle Form in which you have multiple data blocks and requirement is to commit just one data block changes and not to effect any other data blocks. But suppose you have a commit_form butt...
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2021-07-21 11:36:16
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Suppose you want to populate a non-database data block with records manually in Oracle forms. This task can be done using a cursor. Below is the example given for hr.job_history table, where user in...
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2021-07-21 11:33:36
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数据块中包括的3种头信息: 首先,数据块是通过data block buffer cache完成读和写操作的,所以它提供了20bytes的Cache Header和4bytes的 Tail给Cache,用来读取和管理。第2部分是为Transaction层提供的Header信息。它一共占据了48bytes,包括24bytes的控制信息,和一系列的Interested Transaction S
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2022-08-12 20:49:48
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OSPF(Open Shortest Path First)是一种动态路由协议,用于在计算机网络中确定数据包的最佳路径。OSPF的工作原理是通过在网络中的路由器之间交换链路状态信息(LSA)来构建网络拓扑图,然后计算每个目标节点的最短路径。
为了提高OSPF协议的性能,华为公司引入了LLS(Link State Advertisement)数据块。LLS数据块是一种用于扩展OSPF协议的机制,它
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2024-02-20 10:06:50
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插入(Insert),更新(Update),删除(Delete)操作对数据块的影响创建一个名为test的表,并向里面插入三条记录用于测试。用dba用户登录创建PL/SQL过程show_space,用于显示某个表使用block的信息。show_space的使用参考文章:http://blog.csdn.net/huang_tg/archive/2010/07/09/5724499.aspx 
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2016-02-17 17:21:43
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Oracle8 has introduced a change with the data block cache header format. The
basic idea is that incarnation and sequence numbers stored in the cache header
have been replaced with an SCN number and s
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2005-01-11 16:00:28
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Block Size
Largest virtual disk on VMFS-2
Largest virtual disk o
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2011-11-04 13:50:23
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# Java StreamCorruptedException: Unexpected block data
在Java编程中,有时候会遇到`StreamCorruptedException: Unexpected block data`这样的异常。这个异常通常发生在使用Java IO类库中的`ObjectInputStream`和`ObjectOutputStream`时,表示流的数据被损坏或
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2024-06-25 07:31:06
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XFS - Data Block Sharing (Reflink)Matt KeenanFollowing on from his recent blogXFS - 2019 Development Retrospective, XFS Upstream maintainer Darrick Wong dives a little deeper into the Reflinks implementation for XFS in the mainline Linux Kernel....
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2021-10-25 14:45:25
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一. Block Cleanout 说明文章的整理参考:http://w
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2022-10-19 21:42:25
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一. Block Cleanout 说明文章的整理参考:http://www.orawh.com/60.html之前的相关测试参考: OraceITL(Interested Transaction List) 说明
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2011-08-05 16:17:00
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oracle文件的第一个块(block 0)是OS block header,在数据库中查询不到信息,记录的是OS信息,以及文件大小的等信息: SQL> select file_name,bytes from dba_data_files; FILE_NAME BYTES
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2012-11-28 17:08:02
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Although the size of redo entries is measured in bytes, LGWR writes the redo to the log files on disk in blocks. The size of redo lo and is operating system ...
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2024-07-23 09:47:06
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