Oracle

Use the techniques listed below to make sure you don't forget critical steps during a weekly database backup. Back up the primary database once a week. If you create, modify, or stop a database, add a new SQL Server message, add or stop connecting

A variety of ways to remove duplicate data on the Web are not seen in this way: DELETE from Prod_grid_inc WHERE ROWID in (SELECT B.row_id2 From (SELECT ROWID Row_id2, A.*, Row_number () over (PARTITION by a.prod_id ORDER by A.insert_date DESC)

1. The statements that have been validated are exactly the same as those already in the shared pool 2. Variable names as consistent as possible 3. Rational use of outer joins 4. Use fewer layers of nesting 5. Multi-use concurrency The

1. See if the table space is self growing SELECT file_name, Tablespace_name, autoextensible from Dba_data_files; 2. View table space Size Select Tablespace_name, sum (bytes)/1024/1024 as MB from Dba_data_files Group by Tablespace_name; 3. View

1, start-"run-" cmd, then input sqlplus/as sysdba; 2, delete users: In the DOS window input drop user EQM cascade; 3, delete tablespace: In the DOS window input drop tablespace EQM including CONTENTS and datafiles; If the error says that a table

If you accidentally overwrite the previous stored procedure, that must quickly flash back, the longer the likelihood of flash back less, the following for you to introduce the principle of recovery If you accidentally overwrite the previous stored

Select Logid,userid,logtime,url,description, (case operatetype when operatetype = 0 Then ' Add ' when operatetype=1 then ' modify ' Else ' delete ' end case] from log???? 1. Case Select Logid,userid,logtime,url,description, ( Case When

How the Oracle database collects ORA-00904 errors in the execution plan and resolution of the specified SQL (Copyright notice, I original or translated articles for reprint, such as reprinted for Personal learning, please specify the source;

Oracle Concepts-database files are summarized as follows: Oracle contains three basic files: 1: Data file 2: Controlling Files (Control file) 3: Online redo log files (online redo log file) The concept of file (files) for Oracle databases:

In the development of what you should have done similar department management such functions, in general, a department below there is the next level (sub departments), this level is similar to a tree. In this case, the parent department and the

Learning about Oracle is a long and arduous process. If you are not interested, just forced to learn, it is difficult to learn. Learning to a certain extent, to further improve, you have to contact a lot of things beyond Oracle, such as UNIX, such

An Oracle library error was excluded and the following process could not be assigned a port resolution within the specified scope Install the Oracle database a few days ago. Follow the instructions to configure the Linux environment, install the

Create temporary table space create temporary tablespace CREATE Temporary tablespace test_temp Tempfile ' c:oracleproduct10.1.0oradataorcltest_temp01.dbf ' SIZE 32M Autoextend on NEXT 32M MAXSIZE 2048M EXTENT MANAGEMENT Local; Create a table

Oracle has just contacted Oracle database, found that the date type in Oracle is difficult to deal with, must be as November-November-2004, and must be kanji month, I do not know what the reason, from the database read out and update the date

oracle| Solve | The problem These days it is necessary to deploy a system to Linux as a prototype of the system development. System with the database is Oracle 9i Linux, build a database, guide data for a long time, finally thought it was done, but

oracle| controls the database system for a period of time, many parameters need to be adjusted, some parameters can be adjusted in the $oracle_home/dbs/initxxx.ora file, and some parameters must be adjusted in ORACLE's control file. For example,

oracle| Data | database How Oracle databases are started and closed First, several start-up ways: 1, Startup Nomount Non-installation startup, this way to launch executable: Rebuild control file, rebuild database Start instance, that is, start the

oracle| Data | Database The following code can show that all the users and tables that the current user can see are interested in adding the contents of each table Dim objorasession,objoradb Dim Strdbuser,strdbpwd,strdbconn Call Connectdb () Sub

During the installation of the oracle10g RAC, the network settings need to be cautious and extremely important. The following is a list of my oracle10g RAC Environment's network configuration for your reference. 1.hosts File Settings Since RAC has

Q: I installed in the REDHAT8 on the oracle9i process, prompted to change the second disc, but my optical drive is not back out, how to do?The CD-ROM drive is loaded with the Mount command, but when I change the disk, I use the Umount command prompt