Oracle

Refer to table structure and data for the processing of tables Oracle Build table interpolation data and moreUse the SELECT INTO statement to read a line of Tb_employee and use exception handling to handle system-predefined exceptions for

The locking mechanism of OracleThe main purpose of the blockade mechanism is to control the concurrency, to block the interference and to ensure the consistency and accuracy of the data. There are three ways to block Oracle databases: Shared

http://blog.csdn.net/phacker2010/article/details/71901261. InstallationOracle version:Oracle DatabaseG Release 2 (10.2.0.1)：Http://www.oracle.com/technology/software/products/database/oracle10g/htdocs/10201winsoft.htmlInstallation settings:1) The

: Http://pan.baidu.com/s/1dEm7vCP Password: zjot1.GoldenGate Overview2.Linux goldengate One-way replication environment Construction (1)3.Linux goldengate One-way replication environment Construction (2)4. Installing sequence and DDL support5.DDL

Oracle has been constantly changing user password, but very few changes username.Once only can create a user 1. The user 2 data is then imported into user 1. Then deleted by the user 1, this is cumbersome and time-consuming, today to sort out how to

1, the command is written in one line: for example, Sqlldr sh/&[email protected]&connect_string control=&ctl_file data=&dat_file log=& Log_file Direct=yes rows=100000.2, note the file newline character, if it is wind, it is cr/lf, if it is a Mac,

Prepare to start learning Oracle from scratch.I said 2016 years to write a weekly technical blog. So from now on.Today we have a problem with a weak explosion:A notebook was replaced a few days ago, and the Oracle 11g R2 is installed on the new

function : Intercepts the specified part from a date (date) type or interval (time interval) type.Ii. Examples :Get System Current Timeselect sysdate from dual ;Sysdate-----------2016/1/3 18To get the corresponding month-day time and minutes

Today there is a problem with the operation of XML format data in Oracle.Problem record: The requirement is clear that the field type is XmlType, to do is to resolve the field, but because of the database designer's problem, some tables in the field

must state : This blog is reproduced in Oracle foreign KEY cascade DELETE and cascade update http://www.2cto.com/database/201507/417496.htmlIn view of the previous collection of wonderful blog has been deleted, it is very sad, so still want to

6. Build a DatabaseCREATE DATABASE FashionUSER SYS identified by OracleUSER SYSTEM identified by OracleLOGFILE GROUP 1 (' G:\oracle\product\10.2.0\oradata\fashion\redo01.log ') SIZE 100M,GROUP 2 (' G:\oracle\product\10.2.0\oradata\fashion\redo02.log

Oracle creates a create user and authorizes grant to view logged-in users:Here's what you can do:Show user;Select Sys_context (' Userenv ', ' Session_user ') from dual;Select User from Dual;To view all logged-on users, you must be a DBA User:Select

Syntax for adding a field: ALTER TABLE tablename Add (column datatype [default value][null/not null],....);Modify the syntax of the field: ALTER TABLE tablename modify (column datatype [default value][null/not null],....);Syntax for deleting a field:

Select--from--where--group By--having--order by the execution order of these 6 query keywords:1.from assemble data from different data sources;2.where filters the record rows based on the specified criteria;The 3.group by clause divides the data

Original address: http://blog.sina.com.cn/s/blog_5014663501007n40.htmlin the design of the database, choose the right data type, often can avoid a lot of problems, correctly understand the type of database, for storage space planning, application

Http://hi.baidu.com/wind_stay/blog/item/85113a6f6553a5d680cb4a0e.htmloracle wildcard characters, using the operatorThe conditions used for where comparison are:equals: =, , >=, <>Contains: In, not in exists, not existsRange: Between...and, not

[Translated from mos] protocol used by the private network and OracleRAC It is too classic to translate. Source: Network Protocols and Real Application Clusters (Document ID 278132.1) PURPOSE------- Purpose of this document is to give DBAs and

[Translated from mos] Does OGG support invisible indexes in oracledb11g? Source: Does OGG support Invisible Indexes in Oracle 11g db (Document ID 1515952.1)Applies: Oracle GoldenGate-Version 11.2.1.0.1 and laterInformation in this document applies

Summary of basic table space management operations in Oracle databases, tables in oracle DB storage hierarchy (I drew a sketch and I will take a look at it... XD) Manage tablespaces -System: required to store data dictionary information. It is the

DoesOracleGoldenGaterequiresXlc. Adt. Include8.0 (document ID1147116.1) Does Oracle GoldenGate requires Xlc. Adt. Include 8.0 (Document ID 1147116.1)Applies: Oracle GoldenGate-Version: 10.4.0.0 and later [Release: 10.4.0 and later]Information in