oracle performance analyzer

Physical Dataguard Maximum Performance mode configuration process Main Library Host EDBJR2P1 Repository Host EDBJR2P2 1. Create the main library [Root@edbjr2p1 ~]# Xhost + Access control disabled, clients can connect to any host [Root@edbjr2p1 ~]# Su-oracle [Oracle@edbjr2p1 ~]$ DBCA The process of building a library is slightly ... Oracle_sid=orcl 2. Mai

Oracle Database performance adjustment (strongly recommended. This article describes in detail under what circumstances the system parameters need to be adjusted, where the query statements have been tested by myself. I do not understand one sentence, I hope You can modify it .) Oracle is a high-performance database so

Delete with truncate: When you delete records in a table, in general, the rollback segment (rollback segments) is used to hold information that can be recovered. If you do not commit a transaction, Oracle restores the data to the state before it was deleted (accurately, before the deletion was performed) and when the truncate is applied, the rollback segment no longer holds any recoverable information. When the command is run, The data cannot be rec

This is my colleague to the company to do internal training ppt of the handout, for everyone to share. This is the training outline, PPT in Find place to upload, and so found will send the link here. Put it on the csdn for the time being, earn points download points: download.csdn.net/download/kingstarer/10655069 Cut a few ppt page you can preview it first Hello, everyone, welcome to participate in today's technology exchange, and today we are going to share with you is the

a table, in general, the rollback segment (rollback segments) is used to hold information that can be recovered. If you do not have a COMMIT transaction, Oracle restores the data to the state before it was deleted (accurately reverting to the condition before the delete command was executed) When using truncate, the rollback segment no longer holds any information that can be recovered. When the command is run, the data cannot be restored. So very fe

Performance Comparison between mysql and oracle databases using PHP. Test hardware description: test uses my machine, the configuration is as follows: CPU: C433 memory: M hard disk: Cool 2 generation 20g test software description: WIN32 uses windowsntserver4, sp5, test hardware description: The test uses my machine. the configuration is as follows: CPU: C433 Memory: 128 MB Hard disk: Cool 2 generation 20G

Performance Comparison between mysql and oracle databases in PHP. Use a very simple table. mysql and oracle use the same table structure and have only three Fields. the structure is as follows: mysql table structure: CREATETABLEboard (board_idsmallint (6) A simple table is used. mysql and oracle use the same table stru

mysql|oracle| Comparison | data | database | Performance comparison of PHP with MySQL and Oracle database Test hardware Instructions: The test used is my love machine, configured as follows: cpu:c433 Memory: 128M Hard drive: Cool fish 2 generation 20G Test Software Description: WIN32 is under Windows NT Server4,sp5,apache 1.3.12,php3.0.15 and Php4rc1,mysql 3.22

The following articles mainly introduce how to properly protect the performance of Oracle databases. We all know that there are a lot of Oracle databases, including reliability, security, and compatibility, therefore, many enterprises are very fond of it. How to maintain excellent performance for

ORACLE stores the executed SQL statements in the shared buffer pool, which can be shared by all database users. When you execute an SQL statement (sometimes called a cursor), if it is exactly the same as the previously executed statement,ORACLE can quickly obtain parsed statements and the best execution path. This function greatly improves SQL Execution performance