Database Administrator

Small blog message board completed by python + flask + sqlite3, flasksqlite3 # all the importsfrom __future__ import with_statementfrom contextlib import closingimport sqlite3import timefrom flask import Flask, request, session, g, redirect,

Asm creates and deletes disks, disk groups, and rebalance operations, and asmrebalance [grid@lzl1 ~]$ sqlplus / as sysasmSQL*Plus: Release 11.2.0.3.0 Production on Fri Oct 20 15:20:44 2017Copyright (c) 1982, 2011, Oracle. All rights

Method 1: Use the DBCA graphical interface. Method 2: run the following command: Three commands:SYS @ bys1> startup mount exclusive ORACLE instance started. Total System Global Area 631914496 bytes Fixed Size 1338364 bytes Variable Size 26424

Parallel recovery of large oracle transactions leads to database performance degradation-high cpu usage  The rollback of a large transaction has a very high cost, not only locking the required resources And the CPU and IO consumption, especially IO,

There are three ways to improve the IMPORT command performance: [Product] DB2 [Platform] cross-platform [Version] 7.x, 8.1 Q: How can I improve the IMPORT command performance? Answer: 1. In the partitioned database environment, Buffered Insert

In Procedure, p_receiver is the recipient address. Multiple recipients are separated by commas,P_sub is the mail title, p_txt is the mail content HTML ). The Code is as follows: Createorreplaceprocedurebsd_sendemail (p_receivervarchar2,

Problem: the backup policy I use is to perform a full backup at one o'clock every day, and perform a log backup every hour. At the same time, DBCC CHECKDB is run at four o'clock every day. If I found that a large number of damages were reported

On weekdays, DBMS is used much more, and SQL statements are not used for operations. Which of the following statements can be used in a written test. Create a database first Create database mical On Primary (name = miacal_data1, Filename =

We can include the entire package in SSIS in a transaction. But what if a table needs to be locked during package execution? The built-in transaction processing of SSIS can solve this problem. Before that, familiarize yourself with the concept of

The export/import mechanism provided by HBase can implement the Backup Restore function. In addition, Incremental Backup can be implemented. The following python script sets up Incremental backup. In this script, Incremental backup is performed

So I decided to migrate all my servers from MySQL to MariaDB. It is easy for Arch users to follow the official news: systemctl stop mysqld  pacman -S mariadb libmariadbclient mariadb-clients  systemctl start mysqld  mysql_upgrade -p 

We transplanted our Oracle database to the new environment. Some customer tables exist in two databases at the same time, but those tables in the new environment have some additional fields. Can you help me use the import/export tool? In this way, I

In SQL Server 2005, another powerful new feature is database snapshots. A database snapshot is a read-only copy of a database. It is the ing of all data in the database, and its content is determined by the time when the snapshot is executed. These

Bkjia.com exclusive news] on April 9, July 12, DM held the DM database genuine popularity activity. All users who download the free personal experience version of DM on the DM database website and register for use in the DM database forum can

Method 1: Log on to the MySQL Server using the MySQL Adminstrator GUI Tool, but the Server returns the error message Host '60-248-32-13.hinet-ip.hinet.net 'is not allowed to connect to this MySQL server This is because of permission issues. The

Oracle is a high-performance database software. You can adjust parameters to optimize the performance. Performance optimization is mainly divided into two parts: First, the database administrator optimizes the system parameters; Second, developers

BKJIA: If you use IBM DB2 for z/OS, DB2 for Linux, UNIX, and Windows (LUW), there is no problem. Let's review when to use XML storage, and some best practices for customizing XML storage! For an image description, I will use an XML document with the

This article describes some Oracle database migration techniques, including preparations before Oracle database migration and solutions for different types of migration. We hope to help you understand Oracle database migration. BKJIA database

This article discusses how to improve the performance of SQL Server databases. BKJIA database channel recommends "getting started with SQL Server" to help you better understand SQL Server databases. 1. SQL Server System database Introduction SQL

Many developers want to be a DBA, and many people first position themselves as a DBA. What knowledge and skills do DBAs need to master? Below are my During DBA work and interviews with DBAs, there were thirty questions about DBAs. Among the thirty