Database Administrator

Find the listener. ora file: My Oracle is installed on the F disk, Path: F: \ oracle \ product \ 10.2.0 \ db_1 \ network \ admin \ listener. ora: # Listener. ora Network Configuration File: F: \ oracle \ product \ 10.2.0 \ db_1 \ network \ admin \

Query the fifth to tenth data records in the database in two cases: 1. The ID is connected. Of course, this is a good case. You can directly SELECT the database, and obtain the ID greater than 5 and less than 10, This situation is rare. 2.

Oracle optimized or replaced with in, exists, and union statements. There is no problem in testing! Select the appropriate statement based on the actual situation! If there is an index, or full table scan, in and not in should also be used with

Today is. At noon today, I received a question from a user in Tianjin about how to install gi, and a character set question asked by a user: sort it out here. Question 1: Gi installation problems: Problem description: When installing gi, the system

Conclusion: I. Six methods for obtaining an execution plan (the detailed steps are described in the remarks section at the beginning of each example ):1. Obtain the explain plan for statement;2. set autotrace on;3. statistics_level = all;4. Use dbms_

Problems with online LUN migration through ASMAfter RAW is configured on both nodes, make sure that the newly configured raw is displayed on both sides of ll/dev/raw,Add a new LUN and delete the old RAW from node 1 using the command line. An error

A MySQL database memory growth exception was found in the business line a few days ago. The symptoms are as follows:Database Version: Percona MySQL 5.0.67Data volume: 670 M +Memory size: 16 GBInnodb Buffer Pool Size: 4GOther session memory

Test Table 1 DROP TABLE IF EXISTS test; CREATE TABLE test ( id bigint(11) unsigned NOT NULL AUTO_INCREMENT, name varchar(100) NOT NULL DEFAULT '', type varchar(100), create_time datetime,

How To Move Or Rebuild A Lob Partition [ID 761388.1]Modification time: 29-JUN-2010 HOWTO status MODERATEDIn this DocumentGoalSolutionReferences Platforms: 1-914CU; This document is being delivered to you via Oracle Support's Rapid Visibility (RaV)

The first six notes are Table query operations. As a basic operation of the database, query takes a lot of time. In this note, we will learn how to create and manage tables, create tables, Delete tables, modify tables, rename tables, and clear

Service name for Dynamic Registration in the listener: If service_names is not set, the parameter values of db_unique_name and db_domain are spliced to register the listener. (service_names has a high priority). The verification is as follows :.----

Troubleshooting ideas: 1. First, set the table involved in foreign key constraints in the database to invalid. 2. After all the table data is cleared, set the table with foreign key constraints to available. Specific implementation

Saiku will stop responding to the white screen of the browser when filtering Chinese characters. After tracking the source code, it analyzes that the Chinese characters read by the database in the linux operating system are inconsistent with the

Index rebuilding is a topic that is constantly under discussion. Of course, Oracle also has its own opinions. Many of our DBAs follow this rule to rebuild indexes, that is, we recommend that you re-create an index when the index depth exceeds 4 and

13. View the Exhibit that sets the threshold for the Current Open Cursors Count metric. Why is Significance Level threshold type not available in the threshold setting? A. because AWR baseline is not enabled B. because Current Open Cursors

"The database version is 661 and cannot be opened. This server supports both version 655 and earlier. The downgrade path is not supported" This problem is generally caused by different database versions. We can use the following statement to query

/* 1. */insertinto studentsvalues ('123456', 'liming', 'lx @ cdemg.com ', 70045678);/* 2. */create table choices_result (cid char (10), students smallint, avgscore smallint); insert into choices_resultselect cid, count (sid), avg (score) from

The saiku data query result is incorrect, which is three times the source data in hive. Problem locating: Problem with mdx executed by saiku Select non empty {[Measures]. [Downloads]} on columns, Non empty filter (CrossJoin ([appname. default].

Step 2. Install mysql in yum[Root @ stonex ~] # Yum-y install mysql-serverInstallation result:Installed:Mysql-server.x86_64. 1.73-3. el6_5Dependency Installed:Mysql. x86_64. 1.73-3. el6_5 perl-DBD-MySQL.x86_64. 013-3.el6 perl-DBI.x86_64.

Install MongoDB 6.5 in CentOS 2.6 By chszs. Blog homepage: http://blog.csdn.net/chszsNext we will install the latest MongoDB 2.6.0 on CentOS 6.5 x64 system.The MongoDB v2.4.x software warehouse has two packages:1) mongo-10gen-serverThe package