Database Administrator

Convert the timestamp of ubench and MySQL to DateTime Using System;Using System. Collections. Generic;Using System. Linq;Using System. Text; Namespace shopex_lele.codesclass{/// /// Convert the unformatted timestamp to the DateTime format/// Class

I. Environment Description:Original Server 192.168.1.110 Windows Server 2003 system character set: ZHS16GBKThe new ECS 192.168.1.120 RedHat Enterprise Linux system character set is WE8ISO8859PI. Ii. Problem description:1.110 The database on the

I. Introduce a concept:NLS 'national Language Support (NLS) 'from the concept we can see that this parameter actually defines the Language environment for storing data in the database, when we set an nls, we actually specify some expressions

If you want to restore a database on a colleague's machine to your own machine, the DMP file provided by the colleague cannot be used. I suddenly thought of Oracle 10 Gb, and I was still in the Oracle 9I stage. Back up again with your own 9I client,

Original works can be reprinted. During reprinting, you must mark the original source, author information, and this statement in hyperlink form. Otherwise, legal liability will be held.Http://winos.blog.51cto.com/937089/582997 I. Prepare the

On the Linux Virtual Machine Installed Oracle client, you need to use perl to capture the data in the database, so you need to install perl DBI and DBD package, respectively, DBI-1.616 and DBD-Oracle-1.28. You must use root to install DBI and DBD.

In Oracle11g, you can easily locate the current trace file, that is, access the view v $ diag_info.Store @ TEST> select * from v $ version; BANNER--------------------------------------------------------------------------------Oracle Database 11g

In the RAC environment, Oracle uses GRD (Global Resource Service) to record the Resource information of each RAC node. The Resource information of each RAC node is recorded by using GCS (Global Cache Service) and GES (Global Enqueue Service) these

The Administrator cannot delete the DB Link created by other users (for example, emcd ): (1) you can log on to the database as an administrator, query dba_users, and write down the values of the user's emcd password: SQL> select username, password

Preface Recently, I have been learningMySQLThe database architecture-related content searches the Internet for a large number of related materials and articles, and reads them in a rough manner. It is found that architecture-related things are

Exec dbms_job.broken (23, false );Commit; Select t. *, t. rowid from dba_jobs t; Select t. *, t. rowid from sys. user_jobs t; Select job, last_date, next_date, broken, interval, failuresFrom user_jobs; When a job returns an error, Oracle tries

After the database server is set up, the first thing we need to do is not to consider which MySQL-initiated programs should be run on the server that supports the database, but when the database is damaged, how to safely restore to the last normal

1. Introduction to PDM The Physical Data Model (Physical Data Model) PDM provides the basic elements required for the initial design of the system and the relationship between related elements; the physical design stage of the database must be

Today, we will introduce the entire process of installing Oracle 10 Gb in Red Hat Enterprise Linux AS 5.4. 1. Download Oracle 10g First, describe in detail my environment, system: Virtual Machine Red Hat Enterprise Linux AS 5.4, Database: Oracle

-- Create table statement create table wangzstable (idintegernot null, NAMEVARCHAR (20) not null, AGEVARCHAR (20) not null, STATUSVARCHAR (10), createtimestamp, UPDATETIMETIMESTAMP, SENDTIMETIMESTAMP ); select * from wangzsTable; insert into

1. By default, no segment is assigned to the empty table at Oracle11g. Therefore, when you use exp to export the Oracle11g database, the empty table is not exported. 2. After the deferred_segment_creation parameter is set to FALSE, segment is

The distributed document storage database MongoDB is so popular now. In response to the requirements of cloud computing last year, I tried it a little. However, at the time of the test, version 1.8.1 was now available in version 2.4, but NoSQL was

Experiments on ORA-60 deadlock   Create a table:SQL> create table tbl_ora_60 ( Id number (5 ), Name varchar2 (5) ); SQL> insert into tbl_ora_60 values (1, 'A '); 1 row created. SQL> insert into tbl_ora_60 values (2, 'B '); 1 row created. SQL>

In the past, I found that 11 GB of Oracle had this problem and had not been very concerned about it. When I closed the database today, I found that Oracle could not be shut down normally for a long time. The following error message is displayed when

Method 1: press ctrl + backspace while using the backspace key. Method 2: Add the following content to any startup script:[Oracle @ night ~] $ Tail-1. bash_profileStty erase ^ H Stty indicates set tty, which is mainly used to check and modify the