DBA_Oracle PFile and SPFile file management and usage (CASE) (reference parameter Pfile/SPfile when data is started), spfilepfile
2014-08-25 BaoXinjian
I. Summary
The parameter file in ORACLE is an operating system file that contains a series of parameters and their corresponding values. It can be divided into two types: PFile and SPFile.
They are loaded when the database instance is started, it determines
files can be manually configured with a text editor, but not SPFile, and can only be modified online via SQL commands.From the operating system can see the difference between the two, the initialization parameter file is an ASCII text file, spfile as a data file.2:spfile changes can be modified online through the SQL command, no longer need to be manually modified, for dynamic parameters all changes can take effect immediately, and pfile modification must restart the instance to take effect.3:
This article gives the database design, and the first page interface implementation, verification code implementation code.V. Design of the database1. Database table structure2, the article table3. Registered User Form4. Picture table5. Article Comment form6, Comment reply form7. Notice form8. Friends TableSix, home Verification code implementation (learn from others)verifycode.phpUse this form on the first page to log in to the column:Add response action on captcha picture, refresh Captcha oncl
($this->mysqli->error); This returns a result set that, when called $row = $res->fetch_assoc () is a one-way down, should use the while loop return $res; } The DQL statement is a simple query statement.Before using a database query, wrap the file in, then new a tool class object, and then use the object to invoke the function inside.3, the latest picture displayDataba
Introduction:
I will track and record a series of articles that I am currently working on using a complete scrum management project. There will be some lessons to learn and encourage readers to learn from each other. Hai Han is still recommended for some incorrect or poorly written information. Of course, I hope you can provide more valuable comments. The support of readers is my greatest motivation. (One, two, three, four, five, six)
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2014-06-21 Created by BaoxinjianI. Summary
1. Define the request Set, which consists of two parts, Define stage and Define Link2. Establish stage2-1. Create program in stage: Define each step to run the concurrent program2-2. Set Paremeter for program: Define parameters for each concurrent3. Establish linkDefines the order in which the stage execution is defined above, and how it is handled after encountering success Waring errorSecond, the concrete realization
1. Define the request
Problem memory management is a significant impact on long-running programs, such as Server daemons; therefore, understanding
PHPHow to allocate and release memory is extremely important for creating such programs. This article will focus on the memory management of PHP.
One, memory
In PHP, populating a string variable is fairly straightforward, requiring only one statement "
", and the string can be fr
"Progressive DB2.DBA system Management, operation and application Case" (New) Reading notes 3Variables affecting the DB2 environmentBefore we had successfully installed the DB2 V9.7 Enterprise Edition with the wizard installed on the Windows platform, now we are not in a hurry to make specific DB2 operations such as creating instances and databases, doing SQL operations, and so on. We should first of all DB
"Progressive DB2.DBA system Management, operation and application Case" (New) Reading notes 2DB2 Wizard installation under WindowsNow DB2 has supported a wide range of IT infrastructures that can be run on many platforms. The three platforms of Windows, Linux, and Unix are collectively known as the LUW platform. For self-taught DB2, because it is not possible to purchase mainframe or high-end server, so mor
Tags: DB2 replica environment variables"Progressive DB2.DBA system Management, operation and application Case" (New) Reading notes 5DB2 multi-copy installation and default replica switching impact on environment variablesIn this blog post, I have documented in detail the process of installing a DB2 copy with a wizard on windowsxp. It then discusses the nature of the default copy, and also shows you how to s
Tags: reference name col except contact Att sink ber walSQL Server Table Management _ Detailed information on the operation of data deletion and modification (case code)-DML 1. SQL INSERT INTO statement (insert in table) The INSERT INTO statement is used to insert a new record into the table. SQL INSERT into Syntax The INSERT into statement can be written in two ways.The first form does not specify the name
/etc/httpd/conf/httpd.conf3, realize the function 2User host name =/etc/rc.d/init.d/http start,/etc/rc.d/init.d/http reload,/etc/rc.d/init.d/http fullstatus,/etc/rc.d/init.d/ HTTP configtest
4. Function Realization 3That requires write access to the/var/www/html directory # change the owner/group of the Directory
Detect user Password strength (crack user password)1. Installation Hack tool: John the Ripperhttp://www.openwall.com/john/2. grep liming/etc/passwd >/TEST/LIMING.PASSWD #提取用户信息3. grep
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