Database Administrator

TPCC-MySQL Benchmark Test TPCC-MySQL is a benchmark testing tool developed by Percona.Download TPCC-MySQL Yum install bzr-y Bzr branch lp :~ Percona-dev/perconatools/tpcc-mysql After the download, you can see the tpcc-mysql directoryGo to the

Table space-based Incomplete recovery of RMAN (TSPITR) Table space-based Incomplete recovery of RMAN (TSPITR) Table Space Time Point recovery (TSPITR): Concept You can execute TSPITR to quickly restore one or more tablespaces to a previous

I had trouble with my Oracle stored procedures for more than a month. Due to different versions, I spent a whole day today and finally solved them later in the afternoon, this problem accounts for 10% of the performance appraisal this month. It is

Do you still remember the concept of saving points in SQL? In a transaction, you can create a save point, make some modifications, create another save point, and so on. If these changes are not what you want, all you need to do is roll them back to

When using MySQL, garbled characters are often caused by inconsistent encoding. The following information about MySQL Data Encoding is provided, which may be helpful. I. MySQL encoding mechanism: 1. Database-level encoding: databases with different

Test environment: VMware Workstation V6.5.1, Oracle Database 11g Release 2 (11.2.0.1.0) Enterprise/Standard Edition for Linux x86-X64 Intel Core2 P8700 2.53 gb cpu, 1 GB memory, 40 Gb hard disk. Use the Virtual Machine installation method. First,

Check the Statement of the Oracle transaction and the statement of the oracle transaction. SQL> SELECT KTUXEUSN, KTUXESLT, KTUXESQN, /* Transaction ID */ 2 KTUXESTA Status, KTUXECFL Flags ,KTUXESIZ 3 FROM x$ktuxe 4 WHERE

How to initialize data synchronization between Oracle GoldenGate and non-oracle db, goldengateoracle SQL Server is used as an example for non-oracle databases: My ideas A: oracle db production B: oracle db intermediate machine C: sqlserver db

[Translated from mos] the user account in oracle db is locked-view the attempts made by oracle users, mosoracle Reference Original: Users Accounts Getting Locked. (docid 791037.1)   In fact, this article is written for other oracle software

Cocould not find gem 'sqlite3 (> = 0) 'in any of the gem sources listed in you r Gemfile, sqlite3gemfileSolution: sudo gem install sqlite3-rubyERROR: cocould not find a valid gem 'rdiscount' (> = 0) in any repository This problem happened to me for

Solve the problem of Access denied for user ''@ 'localhost' to database 'mysql', deniedlocalhost After modifying the root user password of mysql, log on again, and the system prompts an error such as the title. After finding the answer, the solution

Start: Touch MySQL,: Touch MySQL To learn about MySQL, you must install a MySQL database. It must be simple to install. In fact, I downloaded MySQL5.7 and Baidu completed the installation step. It is much simpler than Oracle. I bought two books and

Unable to connect to MySQL 1. Error description Error No. 2003 Can't connect to MySQL Server on 'localhost' (10061) 2. Error cause Open the task manager and close mysqld-nt.exe. 3. Solution Mysqld-nt.exe is a MySQL Daemon database service

Remote connection to Oracle is troublesome. It usually takes the oracle client to be installed. You can use instantclient to easily connect to a remote Oracle database.   1. Create a Directory D: \ Oracle_Cleint to store related files. Create a

Sybase basic framework The sybase database consists of System databases, user databases, database devices, and auxiliary files. 1. System Database Sybase database is a database management system with multiple database structures. It can be

Part 1 Database SQL language Database index   Indexes play an important role in the database. They are a structure for sorting values of one or more columns in a database table. Correct use of indexes allows you to quickly access specific

9. Which statement is true regarding the INTERSECT operator? A. It ignores NULL values. B. Reversing the order of the intersected tables alters the result. C. The names of columns in all SELECT statements must be identical. D. The number of

As the database data volume continues to grow, some tables need to be converted from normal heap tables to partition tables. There are several different methods for this operation, such as exporting table data, creating a partition table, and then

This is the second article in the series. In the first article, I used MySQL's built-in SSL support for stress testing, which produced some surprising results. Of course, it is expected that the throughput performance of queries using SSL is lower

Oracle 11g online recovery temporary tablespace -- Database versionSQL> select * from v $ version; BANNER--------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.2.0.1.0-64bit