Oracle

Today, our new employee installed oracle. Fortunately, he encountered an exception as mentioned in the installation process. The common solution is to check whether the installation path contains Chinese characters.Coincidentally, this brother

From the Microsoft Dynamics Chinese community http://www.mbscn.net/viewarticle.php? Id = 846 The original post is as follows: ConsultAxaptaAndSAP,OracleWhat are the disadvantages of comparison? [Help] Younger brother has been engaged in the

1. query a pack of Po: Note that different payment conditions, currencies, and tax rates may generate a new po package.Copy the content to the clipboard program code select PLA. po_line_id, Pla. po_header_id, Pla. item_id, Msib. segment1

Oracle provides an interesting connect by clause, which can sort the branches with a family tree structure. It applies to the structure of organizations or companies, financial account code, and so on. To use query traversal, you need to store

When converting an oracle query to an SQL Server, you must be careful about some issues that are not easy to notice. We know that T-SQL is the language engine of SQL Server, while Oracle's language engine is PLSQL. Both query languages have extended

Recently, a project was created on the database platform of Oracle, but versions from Oracle 8.1.5 to Oracle 9.2 were available. As a result, the selection of the Data Access Engine encountered some difficulties, I would like to sum up the following:

In many cases, we use hibernate to build a database. In Oracle, if sequence is used in a database that has been created, you can introduce it to hibernate following the steps below:1. in OracleFirst create Sequence Create SequenceSeq_idMinvalue

1. Create a file/etc/oratab # Add the following content to the/etc/oratab file, # $ Oracle_sid is the SID of your Oracle Database # $ ORACLE_HOME is the ORACLE_HOME of your Oracle Database # Y indicates that Oracle database is required to be started

// View the tablespace InformationSelect file_name, tablespace_name, bytes, user_blocks from dba_data_files // Create a tablespaceCreate tablespace zjsmsweb datafile '/opt/Oracle/APP/Oracle/product/9.2.0/dbs/myweb. ora 'size 512 M autoextend on next

Oracle Study Notes 1. Oracle Introduction Select database standards Project Scale What is the load and the number of users? Cost Security   Oracle Certification Beginner: OCA: Oracle certificated associate Intermediate: OCP: Oracle

Oracle Table query Premise: understand the meaning of several Scott tables. EMP: employee table Field Type Note Empno   Employee ID Ename   Employee name Job   Employee

Transactions and built-in functions in Oracle What is a transaction? A transaction is used to ensure data consistency. It consists of a group of related DML statements. The statements in this group are either all successful or all failed. For

Manage permissions and Roles How Does Oracle manage permissions and roles? What is the difference between permissions and roles? When a user is created, the user does not have any permissions and cannot perform any operations. If you want to perform

  Database Management DBA: Database Administrator Main responsibilities: Install and upgrade the Oracle database Database creation, tablespace, table, view, index... Develop and implement backup and recovery plans Database permission management,

Manage tablespaces and data files Tablespace is a logical component of the database. Physically, the database data is stored in the data file. Logically, the database is stored in the tablespace, which is composed of one or more data files.  

Data Integrity Constraints, indexes, permissions, and roles Data Integrity: Data integrity is used to ensure that database data complies with certain commercial and logical rules. In Oracle, data integrity can be achieved using constraints,

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In Oracle, sequence is the so-called serial number, which is automatically increased every time it is obtained. It is generally used in places where the sequence numbers need to be sorted. 1. Create Sequence First, you must have the create

1. It is best to use analysis functions.Row_number () over (partition by col1 order by col2) For example, if you want to retrieve-records, sort them by tname. Select tname, tabtype from (Select tname, tabtype, row_number () over (order by tname) Rn

Oracle Study Notes: A bit of understanding about backup, restoration, and recovery (go @) Http://www.cnblogs.com/jinzhenshui/archive/2009/03/10/1407666.html   Oracle provides a wide range of Flexible backup, restoration, and recovery management