REM File name Daily.bat REM Batch Process Reload DB Backup REM REM Author Frank.Fan REM Modification History Created 2012-05-07 REM Modified REM for /F tokens=1-3 delims=/ %%i in ('date /t') do @set FILENAMEDT=%%i%%j%%k #取系统当前日期:
REM File name Daily.bat
REM Batch Process
Reload DB Backup
REM
REM Author Frank.Fan
REM Modification History
Created 2012-05-07
REM Modified
REM
for /F "tokens=1-3 delims=/ " %%i in ('date /t') do @set FILENAMEDT=%%i%%j%%k
#取系统当前日期:年月日(中文格式)、月日年(英文格式)
for /F "tokens=1,2 delims=: " %%i in ('time /t') do @set FILENAMETM=%%i%%j
#取系统当前时间:时分
SET USERNAME=SYSTEM #oracle帐号
SET USERPASSWD=123456 #oracle密码
SET SERVICENAME=QEWAY #oracle SID
SET SCHEMASNAME=ISCOP #oracle SCHEMA帐号
SET RARTOOL=C:Program FilesWinRAR #设定WINRAR路径(各个机器不同)
SET DBBACKUPPATH=D:DBBAK #设定被导出的文件路径
SET DBADIRECTORIES=DBBAK #oracle内设置的Directory目录名
SET DBBACKUPFILENAME=QEWAY_%FILENAMEDT%-%FILENAMETM%
goto main
:main
ECHO Exporting schemas.......
expdp %USERNAME%/%USERPASSWD%@%SERVICENAME% DUMPFILE=%DBADIRECTORIES%:%DBBACKUPFILENAME%.dmp schemas=%SCHEMASNAME% LOGFILE=%DBADIRECTORIES%:%DBBACKUPFILENAME%.log
ECHO Done exporting schemas.
ECHO =======================================================
ECHO ...Done export
if exist %DBBACKUPPATH%%DBBACKUPFILENAME%.RAR del %DBBACKUPPATH%%DBBACKUPFILENAME%.RAR
"%RARTOOL%winrar.exe" a -ep %DBBACKUPPATH%%DBBACKUPFILENAME%.RAR %DBBACKUPPATH%%DBBACKUPFILENAME%.dmp
del %DBBACKUPPATH%%DBBACKUPFILENAME%.dmp
Echo ...Compression complete
forfiles /p "%DBBACKUPPATH%" /m *.rar -d -30 /c "cmd /c del /f @path"
#删除30天之前的RAR文件
REM -----------Send a mail to notification-----------
start D:DBBAKBatch_notification_Daily.vbs #调用邮件通知VBS文件
EXIT
邮件通知VBS文件内容:
NameSpace = ""
set Email = CreateObject("CDO.Message")
Email.From = "XXXX@Exchange.com"
Email.To = "XXXX@163.com"
Email.Subject = "Gongxtpt Batch Daily Task"
Email.Textbody = "Gongxtpt Batch Daily Task was done!! Starting at 00:00AM"
with Email.Configuration.Fields
.Item(NameSpace&"sendusing") = 2
.Item(NameSpace&"smtpserver") = "10.0.0.12"
.Item(NameSpace&"smtpserverport") = 25
.Item(NameSpace&"smtpauthenticate") = 0
.Item(NameSpace&"sendusername") = ""
.Item(NameSpace&"sendpassword") = ""
.Update
end with
Email.Send
Set Email=Nothing

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA


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