Oracle

Oracle 10 Gb reconstruction of EM dB control.1. Drop configuration files and repository run:Emca-deconfig dbcontrol DB-repos drop 2. logon sqlplus as user SYS or system, and drop the sysman account and mangement

After Oracle 10g R2 is installed, the following errors are prompted when you log on to the Web console: Io exception: Unknown host specified; the network administrator downloads dl.bitscn.com Java. Lang. Exception: exception in sending request:

Pre-fabricated users in Oracle are enabled Some oracle users are premade and useful, but they are locked during initialization. We need to manually enable it. SQL * Plus: Release 10.2.0.1.0-production on Tuesday April 9 20:02:02 2013 Copyright

In the previous articleArticleIn the internal connection discussion, we used the self-connection to find out the names of all people and their superiors. However, there is a problem: King is the boss of the entire Organization and he has no

This book is jointly written by several itpub developers (newkid, bq_wang, dingjun123, wabjtam123, lastwinner, 〇, and Jia Shumin.If someone asks me about Oracle learning experience, I will tell him to read the official Oracle documents first. But if

Create smallfile tablespace "newts" datafile 'd: \ app \ oracle \ oradata \ orcl11g \ newts01.dbf 'size 100 m autoextend on next 10 m maxsize 200 mlogging/* all operations on segments in the tablespace will generate redo content, which is the

First, PLSQL developer directly reports an error Nls_lang Error   The first step is to test C: \ Users \ xjy. xjy-PC> set nls_lang = simplified chinese_china.zhs16gbk   After set nls_lang is found   Then check the registry

The function dbms_job.submit can complete the scheduled tasks of oracle. The format of dbms_job.submit is as follows: Declare job1 number; Begin Dbms_job.submit (job => output variable, which is the number of the task in the task queue, What =>

I just saw this article in the blog of the inthirties boss. It was well written. I just recently learned PL/SQL and turned to learn it.   ========================================================== =====================================================

1. Set the initialization parameter job_queue_processes.Job_queue_processes = 4Job_queue_interval = 10SQL> alter system set job_queue_processes = N; (n> 0)Job_queue_processes: the maximum value is 1000. View the Job Queue background processSQL>

Three phenomena: Bloat reading: A transaction reads data written but not submitted by other transactions. Repeatable reading: a transaction has been read again and found that the data has been modified or deleted by another submitted transaction.

Basic knowledge: Create Table test01 (Enno number (3), enname varchar (20), sex varchar (2), age Number (3) 1. index creation Syntax: create Index name on table name (column name 1, column name 2 ,.......) tablespace name; example: Create index

Commit Process Before commit Oracle generates a revocation record in the SGA undo segment buffer. The revocation record contains the old values for updating and deleting table rows. Oracle generates redo log records in the SGA redo log

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Normal 0 7.8 磅 0 2 false false false MicrosoftInternetExplorer4 classid="clsid:38481807-CA0E-42D2-BF39-B33AF135CC4D" id=ieooui> Preface   OracleManagement books blossomed everywhere, and a

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1. Differences between cold backup and hot backup and their respective advantages Answer: Hot Backup is applicable to databases in the archive mode. When the database is still in the working state, it is backed up. Cold backup refers to the backup

Permission management, menu management, general framework, Oracle database, ASP. NET, Oracle function, Oracle package 1. Table Creation User permission series Table menu Log Series table Spool ora_tables.logprompt permission classification table

Primary Key (PK ):The column name that uniquely identifies a record. Foreign key (FK ):The foreign key refers to the primary key, which indicates a typeOne-to-multipleLink. Intranet connections are divided into three types: ① Equijoin:The two tables

1. Set the Linux computer character set so that it is consistent with the Oracle database character set on the computer; On the Linux command line interface, Query the character set of an Oracle database: Select * From nls_database_parameters t