View the MySQL show profile (profiling Report)
The show profil command is provided by MySQL to analyze the resource consumption of statement execution in the current session. It can be used for SQL optimization measurement.
1. Enabling and disabling
Oracle 11g backup-based rman duplicate
Backup-based rman duplicate command to create standby databasePrerequisites: ensure the backup of the original database and archive is completely visible to the standby end,It is assumed that the storage
Oracle Active Data Guard adjustment case [2]
The customer's Oracle 11gR2 Active Data Guard environment, the master database's standby_file_management = AUTO, the Standby database's standby_file_management = MANUAL, resulting in the Data file
ORA-01031: insufficient privileges Problem Solving notes
About ORA-01031: insufficient privileges troubleshooting notes
A) File $ Oracle_HOME/network/admin/sqlnet. oraDoes this involve oracle OS authentication or password file authentication?
The
ORA-28001: the password has expired Solution
ORA-28001: the password has expiredCause: The user "s account has expired and the password needs to be changedAction: change the password or contact the DBA
An error is reported when the program connects
Use of dbms_ SQL in oracle, oracledbms_ SQL
1. Run the query using dbms_ SQL
Use dbms_ SQL to execute the select statement in the order of open cursor --> parse --> define column --> execute --> fetch rows --> close cursor;
1. Create a team table
Django many-to-many relationships, django many-to-Relationship
Django 1, 1.7
Use ManyToManyFiled to define multiple-to-multiple relationships.
In this example, the Article can be published on multiple publications, and the Publication can have
7. mysql-cluster and mysql-cluster
This article describes how to install Mysql-Cluster. First, let's take a look at the following: (linux User, debian myself)
MySQL Cluster is a technology that allows you to deploy the "in memory" Database Cluster
Controllable cache for improving the performance of computing reports with clear sets, and controllable reports
It is an indisputable fact that using cache can improve report performance. Generally, high-end report tools provide the report cache
Apache OFbiz member module table structure design, apacheofbiz
In addition to the technical framework, the structure design of database tables can be described as another direction worth learning. In this article, we will talk about the design of
ORA-12547: TNS: lost contact error handling, ora-12547tns
Nothing left to worry about. Configure the oracle database to automatically restart with the system. Check the information and find that you need to configure/etc/oratab and rc. local. The $
Atitit. Sum up java c ++ c #. net js php,
Atitit. Summary of methods for judging time overlaps java c ++ c #. net js php
1. process logic 1
2. The overlap algorithm is actually the intersection of a date set and a time set (Multiplication
Add, delete, modify, and query objects and Methods
Recently, I have been working with my friends on data centers. I am responsible for layer D. When I re-write sqlhelper, I found that the query operation uses the SqlDataAdapter object. I remember
ORA-06547: INSERT, UPDATE, or DELETE statements must use the RETURNING clause, ora-06547returning
Cause of this error:
The returning into clause acts on insert, update, and delete, but the select clause does not work. You should use.
The error
XMPP protocol for instant messaging underlying writing (2) -- IOS XMPPFramework Demo + analysis, xmppxmppframework
I hope This is a new day!
Before reading the code, I think you should first sort out your mood and let me say a few words:
First, I
Tinyint data type in mysql, mysqltinyint
The mysql database defines the data type as "data type (m:
Here, the number m represents different meanings in different data types.
The integer system has limited the value range. For example, tinyint
How to Restore Archive logs from a backup set in oracle
How Does oracle capture archived logs from the backup set?
In Dalian Hospital, the database is archived. However, after archiving, rman uses crontab to automatically archive the logs and delete
Ado.net (1) at a school, and ado.net at a school
The ado.net eleven group is an object-oriented class library used to interact with data sources. Data sources can be databases, text files, excel tables, or XML files. In simple terms, ado.net
The maximum number of connections to view and modify in oracle, and the maximum number to view in oracleStep 1: In the cmd command line, enter sqlplus or directly open command window in plsqlStep 2: Enter the user name and password as prompted1.
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