Oracle

What is the first stored procedure? What does the job do?Stored procedures: the equivalent of a complex SQL, used to perform custom complex functions, created and then stored in a table, you can execute the stored procedures through the job, to

After successfully installing the Oracle 11g database, you will find that your computer is running slower, that your computer is running faster with a lower-profile PC or even a very card-enabled Oracle service. So, how do you do it

1 What is a module? Common scenario: A module is a file that contains Python definitions and declarations, and the file name is the suffix of the module name plus the. Py.In fact, the import loaded module is divided into four general categories:1

Storage ManagementSize of Query BLOCK: Show parameter db_block_sizeDatabase: DatabasesTablespace: Table SpaceDataFile: Data filesSegments: DuanExtents: Expansion (range)Dba_extents: Information for each extensionDba_segments: Information about the

First: Go to re-use the DISTINCT keyword.Second: The complement function lpad (left-fill), Rpad (right-complement)Eg: less than 15 of payroll columns use "$" to top up 15 bits (use the Lpad method to implement the left complement to the payroll

Database managementThere are 4 ways to close the database:1.shutdown Modes shutdown mode2.shutdown Normal shutdown3.shutdown immediate immediately close ★ Common commands4.shutdown abort directly shuts down the databaseStartup: RestartDbstart:

Can Oracle restart be used to make high availability use of Oracle GoldenGate?From:Can Oracle Restart is used with Oracle GoldenGate for high availability?(Document ID 2025185.1)Suitable for:Oracle goldengate-version 11.2.1.0.20 and laterInformation

Introduction to Oracle DatabaseMaybe a lot of people are familiar with SQL Server, not much about Oracle database, here is a brief introductionThe founder of Oracle database is Lawrence Ellis.Oracle database can be used by multiple operating

The project will encounter such a situation, query out multiple records (a list object collection), one time to insert multiple data into the database, the following take the data class to look at the two methods of insertion:Method One:MyBatis

1. Oracle Start-upOracle's services are as follows:Starting Oracle has two important services, such as the identity office:L Oracleoradb11g_home1tnslistener: Monitoring service, mainly used for client access to the database, if the service does not

Self-connect:Empid ename Mgridabc101 def 100102 XYZ 100Emp:mgr:Empid ename Mgrid Empid mgrnameABC (ABC)101 def 100102 XYZ 100101 DEF-ABC102 XYZ (ABC)Select Emp.ename, Mgr.mgrnameFrom EMP, Mgrwhere Emp.mgrid=mgr.empidEmp:mgr:Empid ename mgrid empid

One, database backup1. Enter the databaseSqlplus system/Passwordsqlplus username/[email protected] assysdba2. Create directory D:\temp\dmp (DPDATA1 database name)Create directory dpdata1 as ' d:\temp\dmp ';(Delete directories drop directory dpdata1;)

Basic query statements SELECT [DISTINCT] column_name1,... | * FROM table_name [WHERE conditions] formatting in sql*plus change display field name: COLUMN column_name HEADING new_name    (note that

Drop,delete,truancate Table Recovery in OracleIn Oracle, there are often errors that cause the table to be deleted, and here are some of the methods I've written to restore the table.The flashback mode satisfies the criteria ( enabling the Flashback

Many applications have similar organizational tables, and the organization's tables are typically hierarchical (no loop nodes). So when organizations control data permissions, many people prefer to get organization information through connect by,

Oracle Kanji Pinyin (get full spell/pinyin initials/Pinyin intercept, etc.)The effect is as follows: Oracle character Set GBK no problem, UTF-8 need to modify SQL code--oracle kanji to Pinyin package--1. Get full spell www.2cto.com SELECT gethzpy.

A Path to Oracle log: Login: Sqlplus "/as sysdba" View path:sql> select * from V$logfile; Sql> select * from V$logfile; (#日志文件路径) two. What the Oracle log file contains: (The number of logs may vary slightly) Control01.ctl example01.dbf redo02.log

Starting Oracle Universal Installer ...Checking Installer Requirements ...Checking operating system version:must be 5.0, 5.1, 5.2 or 6.1. Actual 6.2Failed Exiting Oracle Universal Installer, log for this session can is found at

Sometimes we forget the Oracle SYS and system passwords, and don't worry, you can change the password by Sqlplus. Can only be modified, can not be retrieved.Here's how:1. Open cmd interface, enter Sqlplus/nologThe results appear as follows: 2. Enter

the difference between delete, truncate, and drop in OracleTags: deleteoracletable storage2012-05-23 15:12 7674 People read comments (0) favorite reports Classification:Oracle (2)Copyright NOTICE: This article for Bo Master original article,