speks blocks

Tags: OracleSql> Select file_id, block_id, blocks from dba_extents where owner = ' lilc ' and segment_name = ' TEST ';,,,,, 6 10624 611648 1024x768 selected.Before destroying the data:Sql> Select COUNT (*) from test;COUNT (*)----------783018Rman> Recover datafile 6 block 11620 clear;Rman> Recover datafile 6 block 4467 clear;rman> backup Check logical validate DataFile 6;Starting backup at 23-sep-15Using channel Ora_disk_1Using channel Ora_disk_2Channe

Do front end also has several years time, dare not say can see him to look more thoroughly, but somewhat still some own thing. As far as production is concerned, I divide a page into four layers: frames, layouts, modules, lists, and blocks of data. I. Framework The frame of the page is basically: "Head", "main", "tail". However, for some pages such as tudou.com, due to the needs of the layout, it should also be under the "head" to add a "menu." S

PL/SQL is a block-structured language in which a PL/SQL program contains one or more logical blocks in which variables can be declared and variables must be declared before they are used. In addition to the normal execution procedures, PL/SQL also provides specialized exception handling parts for exception handling. Each logical block is divided into three parts, and the syntax is:Syntax structure: The syntax of PL/SQL

Tags: Oracle bad blockThe occurrence of bad blocks is rare, but the production system occasionally appears. If there is a physical backup, the processing is relatively simple, directly block-level recover can be, but if only a logical backup? There are four kinds of cases to deal with, and here's a summary:One, the data part of the block is broken, when the SQL execution scan to this block will be reported ORA-01578:ERROR at line 1:Ora-01578:oracle da

Building BlocksXiao Ming likes to build a number of bricks recently.A total of 10 blocks, each building has a number, 0~9.Rules for building blocks:Each block is placed on top of the other two blocks, and must be smaller than the number of two blocks below.At the end of the 4-storey pyramid, all the bricks must be used.Here are the two qualifying methods:01 23 4

Methods for detecting bad blocks of Oracle databases: 1, use DBV (DB File Verify) tool; 2, use Rman (Recovery Manager) tool; DBV (DB File Verify) Tool: External command, physical media data structure integrity check; It can only be used for data files (offline or online) and does not support block checking of control files and redo log files; You can also verify the backup file (Rman Copy command backup or operating system CP command Backup); E

------------------------------------------------------- ---------- ------------------------------ /OPT/APP/ORACLE/ORADATA/GOOLEN/GOOLEN01.DBF 6 Goolen Sql> Select Dbms_rowid. ROWID_RELATIVE_FNO (ROWID), Dbms_rowid.rowid_block_number (ROWID) block# from Scott.rcsy; Dbms_rowid. ROWID_RELATIVE_FNO (ROWID) block# ------------------------------------ ---------- 6 51 6 51 Now, we're going to destroy block 51st of file number 6th. [Oracle@localhost xiaoming]$ dd if=/dev/zero of=/opt/app/oracle/orada

Before you do this, you need to install some of the necessary software first.GCC is installed by default under Ubuntu, but the required header file is missing, and you can install the Build-essential suite by entering the following command on the commands line:sudo apt-get install build-essentialTo install the GTK Dev kit using gtk+2.0, enter the following instructions on the command line to install the GTK dev Kit Libgtk2.0-dev:sudo apt-get install Libgtk2.0-devAfter the installation is complet

The first two days to try to use Vim+gcc+gdb to write C language, but for me such a novice is too painful, not to, to the IDE, find a half-day, chose the code blocks this is the most used by everyone. But when it's running:Flash past, Debug time also catch no breakpoint, also does not display the console, the internet looked for a bit, there are currently several solutions:(1) First, all the paths cannot have Chinese and cannot have spaces.(2) Second,

One, the statement of the blockblock is declared after the function call, using the {..} Enclosed, or do.. End encapsulation. {} is typically used on single-line statements, do ... End is used on multiple lines of statements. (1..4). each{|v| print "#{v}"} #输出1 2 3 4 Blocks can be with parameters, unlike function parameters, block parameters with Encapsulation, of course, can take multiple parameters. How these parameters are defined i

Tags: return flag space file generation BMS UIL Star Introduction1. OverviewFunction: Used to detect and repair corrupted data blocks on tables and indexes.2, the composition of the package1), Admin_tablesSyntax: Dbms_repair.admin_tables (table_name in Varchar2,table_type in Binary_integer,action in Binary_integer,tablespace In varchar2 default null);Where table_name is used to specify the table name to be processed, you must specify the prefix orphan

semicolon, and enclosed in curly braces, in the main part: variable or array assignment, Output command, built-in function, control-flow statement. For example: Print function, ' {print '} 'awk Command Processing flowchartIf the begin and end statement blocks are not defined, then the begin, end statement block is not executed. awk Parameters-F Re: Allows awk to change its field delimiter-V var= $v assigns the V value to Var, if there are multip

sudo apt-get updatesudo apt-get install nginxsudo mkdir-p/var/www/ example.com/htmlsudo chown-r $USER: $USER/var/www/example.com/htmlsudo chmod-r 755/var/wwwsudo cp/etc/nginx/sites-available/default/etc/nginx/sites-available/example.comsudo nano/etc/nginx/sites-available/example.comserver { listen default_server; Listen [::]:80 default_server ipv6only=on; root/usr/share/nginx/html; Index index.html index.htm; server_name localhost; Location/{ try_files $uri $uri/=404;

Generally in this case, I like to ask myself: "If the question is to Apple, what will he do?" Of course, we all know that Apple certainly knows how to do this, because at one level, Apple's documentation is a guide to how we use design patterns. So we need to look at the circumstances in which Apple uses delegate and block, and if we find out how Apple makes this choice, we can build rules that can help us make the same choices in our own code. To find out where Apple uses delegate is simple,

-driven, modular design Direct use of custom tags such as , binding events, etc. in templates Build projects automatically using ScratScrat can be installed in a continuous integration system to automatically build the project, but also has the ability to build by version. Personal view The framework proposed by building blocks to develop the module, and finally the way to build the system is very good, before I developed projects are u

The optimizer must determine how to access the data that your SQL requires. The next step in generating an execution plan is to use the optimizer to determine the best way to access the data when the expression and condition evaluation of the SQL statement is closed, and all query transformations that may help to build the execution plan more accurately are executed. In general, there are only two basic methods of data access: Full scan and Index scan, and full scan may be a full table scan

; ---If you use this statement, you only need to modify the name of the table that is marked red, and the field name. ROWID object_id file_id block_id row_id Object_nam B ------------------ ---------- ---------- ---------- ---------- ---------- ---------- AAAFOZAAEAAAACBAAA 21427 4 0 A 3 AAAFOZAAEAAAACZAAA 21427 4 153 0 A 0 AAAFOZAAEAAAACSAAA 21427 4 146 0 A 55 Through the above statement can query out update a set b=0 where b=7; Modify the block of data is: file#4,block#153 #############

Tags: let index ges corrupt 1.2 res bad block dex data fileSee if the Oracle data file has bad blocks through the DBV command. [[emailprotected] PROD]$ **dbv file=users01.dbf** DBVERIFY: Release 11.2.0.4.0 - Production on Mon Jan 22 22:21:14 2018 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. DBVERIFY - Verification starting : FILE = /u01/app/oracle/oradata/PROD/users01.dbf DBVERIFY - Verification complete Total Pages Ex

1. Create a new C or C + + project in Codeblock, because you can debug code under project.Codeblock New Project step: File--new--project--console Applications--c or C + + can be--project the path (not use Chinese path!) ）2, the project directory under the MAIN.C changed into *.py file, this article changed into test.py.3, click the menu bar tools--configure tools--add button, the Edit Tool page appears, where the Python compilation options are configured.4. Click Settings--editor--keyboard Short

kinds of organization methods, such as Link way and index way. Link the same state of the PCB link into a queue, different states corresponding to different queues, can also be in the blocking process of the PCB, depending on the cause of the blocking of the different, into a number of blocking queues. Indexing is a process in which the same state is organized in an index table, the table entry of the index table points to the corresponding PCB, and the different states correspond to different