Oracle performance problem diagnosis example

As soon as I opened the database and did nothing, I found that the hard drive lights went viral. Why? It is preliminarily determined that Oracle's scheduled task is running, but which one is running? As soon as I opened the database and did nothing,

PHPinclude Arbitrary File or URL introduction _ php instance

Include and require are used to include and run specified files. If the document type is not described in the official manual, can PHP include a non-PHP file? In practice, write a simple PHP file and include a js file. After the file is executed, no

Oracle rounding in special circumstances

For the strange data, the value of select is obviously 0.0140625, but it is not rounded down by round (vv, 6. It should be calculated as follows: 0.014063, but the actual result is: 0.0140 For the strange data, the value of select is obviously 0.0140

Oracle Errorinwritingtodirectory/tmp/OraInstall error description

Error description of Oracle ErrorinwritingtodirectorytmpOraInstall Oracle Installation Error in writing to directory/tmp/OraInstall Error description The following error is prompted when installing Oracle: [Oracle @ ora10g database]

Oracle10g Database Backup Summary

1. Enable archivelogSQLgt; shutdownimmediate; SQLgt; startupmount; SQLgt; altersystemsetlog_archive_dest_1 1. Enable archivelog SQLgt; shutdown immediate; SQLgt; startup mount; SQLgt; alter system set log_archive_dest_1 = Homepage →

Two methods for determining the program running status using PHP in Linux _ php instance

This article mainly introduces two methods for determining the running status of a program using PHP in Linux. For more information, see. Sometimes, when writing scripts on the server, you often need to put them in crontab for regular operation.

ORA-29283: invalid file operation

Recently, due to the need to migrate the Oracle database, UTL_FILE_DIR settings (oracle11g, linux) are involved ). It is mainly used to output logs for executing stored procedures. Recently, due to the need to migrate the Oracle database,

Use RMAN on Oracle11gR2 for full-database migration

Use RMAN on Oracle11gR2 for full-database migration background: Database IPSID Port Database Version TargetDB192.168.1.133orcl152 Use RMAN on Oracle 11gR2 for full-database migration background: Database ip sid Port Database Version Target DB 192.168

MySQL database initialization mysql_install_db

When the MySQL System Database (mysql System Database) fails or a new mysql instance needs to be added, You need to initialize the mysql database. Command: usrlocalmysql When the MySQL System Database (mysql System Database) fails or a new mysql

Fast database migration using imp/impdb and Pipelines

A. Use impdp and network_link1 to create dblinkcreatepublicdatabaselinkhrtestdbconnecttosystemidentified in the target database. A. Use impdp and network_link 1 to create the database linkcreate public database link hrtestdb connect to system

How does Hibernate view automatically generated table creation statements on the console?

Hibernate automatically creates a table by configuring lt; propertynamequot; show_sqlquot; gt; truelt; propertygt; and lt; propertynamequot; hbm2 Hibernate automatically creates a table by configuring lt; property name = quot; show_sqlquot; gt;

A php zip compression class sharing _ php instance

This article mainly introduces a php zip compression class sharing. If you need a zip file, you can refer to the following function: compress the file into a ZIP file or a rar compressed package. The extension name can be customized. Usage: First

MySQL Master/Slave, semi-sync, Master/Master Replication

We know that the binary log of the MySQL database records every clear or potentially changing SQL statement, so we can implement it based on the binary log. We know that the binary log of the MySQL database records every clear or potentially

Create RMANcatalog for physical backup

Using catalogdatabase to store rman backup metadata is very common in the production environment and is highly secure. The reponsitorydatabase and cata of gridcontrol can be Using catalog database to store rman backup metadata is very common in the

Several code sharing functions for php File Download _ php instance

We generally call URLs to download files, but this method cannot be used when ie can identify files opened, such as downloading an image or html webpage, in this case, you need to program a simple PHP file to download the source code. Although

View the redo log switching frequency of Oracle

Check the redo log switching frequency of Oracle. The two SQL statements have the same principle, and the second uses the statistical function. Check the redo log switching frequency of Oracle. The two SQL statements have the same principle, and

Example of thinkphp implementing breadcrumb navigation (current location) _ php instance

Today, I improved some details of my blog, including modifying the "current position" on the topic page and Article Page ". In the past, there were very few columns, and they were done in an endless way (the name of the homepage> topic). Now there

GlobalEnqueueServicesDeadlock causes node restart

GlobalEnqueueServicesDeadlock causes node restart Global Enqueue Services Deadlock causes node restart The error message in the log is as follows:Sun Sep 02 01:29:47 2012Global Enqueue Services Deadlock detected. More info in

Use DBMS_STATS to import and export Oracle statistics

Today, the customer reported that the query was slow. Because the query was in a production environment, the test was not allowed. Therefore, refer to the following blog to export the statistics to the test server for SQL statement optimization. 1.

Using Keepalived to build dual-master MySQL

Using MySQL dual master + keepalived is a very good solution. In the MySQL-HA environment, MySQL is mutually master-slave, which ensures data consistency between the two MySQL databases. Using MySQL dual master + keepalived is a very good solution.

Total Pages: 12780 1 .... 10514 10515 10516 10517 10518 .... 12780 Go to: GO

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.