mistake

Oracle's system is too large, for beginners, there are some know how to feel, what want to learn what the results are not adopted, so the learning experience to share about the hope that people just started an oracle general understanding, less take

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Finally online. Telecom broadband connection upstairs, 4M, using the old cable before, found his book to get less than IP, guess there is another problem of crystal head, crystal really the first line of the original sequence does not. Huawei had hea

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1. Someone sent me to modify the local time change, because the other would be likely to forget. (2) sent me the requirements for, look, updates to the document. 3 According to the document to write the script, and run, look at the table really add o

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A: RPM package, This package is like the windows EXE installation files, various documents have been compiled, and hit the package, which documents the folder into which are well specified, installation is very easy, in the graphical interface where

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A: RPM package, This package is like the windows EXE installation files, various documents have been compiled, and hit the package, which documents the folder into which are well specified, installation is very easy, in the graphical interface where

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If you have old vs2003 compiler, or the significance of this essay is not very big, http://blog.donews.com/tekjian/archive/2006/08/06/990279.aspx a simple introduction to how to install this stuff directly. But now many people were using vs2005 or vs

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Today in the debugging code, met a very funny mistake, Page-encoding specified in XML prolog (UTF-8) is different from that specified in page directive (utf-8), since the beginning of jdk version to I changed, I always thought it was a jdk version is

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As follows: A .8.0 in 1 into the first CD-ROM 2.cd / mnt / cdrom / Fedora / RPMS 3.rpm-ivh ttfonts-ZH_CN-2.11-29.noarch.rpm (Simplified Chinese, you can use the tab key to the padded back section, so as not to make a mistake) 4.rpm-ivh ttfonts-ZH_TW-

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Colleagues in a time of deployment of this project LoadError (Expected /--/app/controllers/xxx_controller.rb to define XxxController) Controller that is the beginning of the name wrong, but several times than not found error. To see the document whic

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As a general statement, a data table if the data exceeds the hundreds, we should consider the establishment of the index. Dragged on for so long, is finally given some of our larger the data table is indexed. First, see the current index has been est

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ps-ef | grep java java process on all root 17540 1 0 2009? 01:42:27 / usr/java/jdk1.5.0_15/bin/java-Djava.util.logging.config.file = / usr / local / tomcat / conf / logging.properties-server - Xms800m-Xmx800m-XX: PermSize = 64M-XX: MaxNewSize = 256m-

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from: http://my.oschina.net/u/179560/blog/31626 oracle system too large, for beginners, there are some know how to feel, what want to learn what the results are not adopted, so the learning experience to share about the hope that people just started

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Error reason: a new table in Oracle called "QueryHistory", used to save the user's query log, time, and then "Select * from QueryHistory" to query, report "ORA-00942: table or view does not exist." Error Analysis: the use of

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sftp This is an open-ssh package, so the port is the same as 22 and ssh. In addition there are other ssh packages scp, keypair generation software and so on. sftp configuration is simple, without any special configuration you can use it, but what is

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Oracle's optimizer (Optimizer) (CBO optimization) Before running a SQL Oracle, first analyze the statement execution plan, then the execution plan to execute. Analysis of statement execution plan by the optimizer work (Optimizer) to complete. Differe

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What is a savepoint? Use the SAVEPOINT statement to identify a point in a transaction to which you can later roll back. For example: SQL> SELECT * FROM SCOTT.DEPT; DEPTNO DNAME LOC ------ -------------- ------------- 10 ACCOUNTING NEW YORK 20 RESEARC

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Joint multi-table query by connecting to a multi-table queries, multi-table query data from multiple tables, but the table must have the appropriate connection between the conditions. In order to query from multiple tables, multiple tables must be id

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Had a very simple thing, toss a long time, here summarize the installation steps to install 32-bit linux system mysql 5.1.56, for example, all the directories for the installation of the default directory. 1 package in the official website, where I m

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I head on to the Ftp assign a user, then give him a 50MB of space, the path will be mapped to the IIS path. Personal understanding of this seems to be the same as free space configuration. FTP upload to modify a given user to delete permissions, the

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Now learn to build a portal, is now considered the use of open source framework and in doing good Jetspeed2 the Portal framework. The following day I want to record a recent study into the problems and solutions encountered. Today, trying to add a po

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SAP BW e-mail sent Monitoring Strategy The past is the message a queue of messages submitted to the BW we believe that their work is done. In fact did not, and we have been puzzled because the message is wrong, it will drag, will, etc., will card, al

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Afternoon and new colleagues made a fun game - "Sea Project", through a tiny project, we completed it with the user to select from the initial to the final release plan development process, benefit a lot. Small but perfectly formed, this process

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The special circumstances of the project because the company are in charge of money, can not have the slightest mistake, really fast so special contests for verification, before, though also with js validation framework validate.js, but always felt a

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Has not written a savings process, and today tried to write the next, but the problem with the out, when calling the following exceptions: Execute SQL exception !SQL: {call P_VIP_RULE_INS(?,?,?,?,?,?,?,?)} java.sql.SQLException: Index missing IN or O

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http://dev.mysql.com/doc/refman/5.0/en/server-status-variables.html Aborted_clients That for some reason the client does not close the connection and cause failure of the number of connections. If the customer does not withdraw prior to adjustment my

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My Computer -> Manage -> Services and Applications -> Services The right to find Print Spooler, change its startup type to Automatic and start the service, it will not be prompted to print a mistake

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Sprint review meeting people from the product liability, Scrum team and the Scrum Master to participate in the meeting need to discuss what good ideas or methods should be adopted in the Sprint what is undesirable, what approach works well and should

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Workaround: Modify the Tomcat port, the specific approach - to find the directory ... \ Tomcat 5.5 \ conf, in the conf directory under the "server.xml" file, use Notepad to open this file, find the (open the file Ctrl + F) All documents, "8

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Dong-soon light SQLITE3 use summary (3) Reproduced <script> </ script> tags: Knowledge / exploration <! - Body start -> 4) Transaction sqlite is to support transaction processing. If you know you want to delete a lot of data synchronizat

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ORA-01033: ORACLE initialization or shutdown in progress error solution 2008-04-07 20:53:40 <! - ShowHead end -> Tags: ORACL error solution Original works, for permission to reproduce, reprint, please be sure to indicate the form of hyperlinks origi

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The classic mistake about Oracle ORA-01555, there have been many articles online, but mostly from a DBA perspective to this problem, mainly is to introduce the principles and back office solutions. This is the Oracle client as a visitors point of vie

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SQL Server2005 installation program can not access the system accounts ASPNET account information Problem installing SQL Server2005 information: "SQL Server Setup can not obtain system account information for the ASPNET account." Solution: With

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Colleagues conclude the PD Caution, record it. Create table script generated by the pdm when the field exceeds 15 characters on the error (oracle) The solution is to open the PDM, Database menu bar will appear, enter the Database - Edit Current DBMS-

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oralce10g database, a table, larger than the data as a table, about 150 million data, because the database structure is not very reasonable, resulting in a 40G size of the table, but customers need to export a detail, so the establishment of a joint

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Before running a SQL Oracle, first analyze the statement execution plan, then the execution plan to execute. Analysis of statement execution plan of work is to optimize device (Optimizer) to complete. Different circumstances, there may be a variety o

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The midpoint of the service start mysql, Automatically stopped soon, Start again, there will be 1067 error, the service stops unexpectedly google a lot, is that correct my.ini path is not the reason. But still tried unsuccessfully. I do not know what

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This switched http://blogold.chinaunix.net/u/29134/showart_373855.html Novice in this range are often easy to mistake cause can not enter MYSQL, the whole was very depressed. I do a few examples will soon understand. 1, the original password is 12345

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Original Post address: http://topic.csdn.net/u/20090502/13/8f4737bd-d40a-498d-b05e-e662ef2925a1.html The beginning of a customer to do to optimize the configuration, there have been such a mistake, then no experience, how the database get up, they sc

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In many cases, mysql password forgotten, only to reload, but doing so is awkward. Solution is now given, attention inside the spaces and punctuation in line with other mistake, or will not succeed. Change mysql password is the first operation 1, put

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Add, delete or modify database objects, once the mistake may lead to big trouble, need a database management staff, or developers of the relevant entities may be affected code rewrite. To change the database structure and problems, to track the probl

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oracle Select queries, statistical queries, group functions, order by, having, subqueries, set operations, Keywords: oracle Select queries Statistics Section of the function order by having a collection subquery computing Select queries can be create

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Have encountered such a problem. We have some tables by the system to allow other systems to access the view, because yesterday I removed the two parts of table fields, leading to other systems to access Times view view_name has errors, careful analy

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If you enter this sql statement: select product_type_id, avg(price) from products where avg(price) > 20 group by product_type_id; Would be a mistake, because the words Where a single line rather than the group can only filter Line in order to filter

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I. PURPOSE: 1, to talk about Oracle's Optimizer and some related knowledge. 2, a table to answer why sometimes there is clearly an index of a field, when observing some of the SQL execution plan and found that the index does not take issue. 3, if you

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During this time, do not torture oracle, silent friends, know that their oracle, do the work in the use frequently, but the configuration, optimization of the things that are in a hazy state. Taiqing say, do not quite understand, so take the time to

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Configured tnsname.tra information, connect to the database results to the "ORA-12545: because target host or object does not exist, connection failed"; Then finally think of it in C: Windows \ System32 \ Drivers \ etc under the HOSTS file to th

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What if what is varchar convert other types such as clob blob so you do not have the data and add columns or remove columns holding a mistake is likely because you deleted but did not submit

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This article is reproduced from: http://justdo2008.iteye.com/blog/743153 The following is the MySQL installation diagram, with the installation of the executable file that details a bit! First, open the Mysql Download Center: http://www.mysql.com/dow

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I recently visited my machine oracle11 appear "ora-12514 tns listener not recognize the current connection descriptor in the requested service" error, preventing access to the database, I thought I was a mistake on my machine causing the error ,

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Chengdu JAVA Club on the 2nd group 51,397,782 The following is the MySQL installation diagram, with the installation of the executable file that details a bit! First, open the Mysql Download Center: http://www.mysql.com/downloads/mysql/MySQL Server M

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