oracle performance analyzer

different. Select*from dualSelect*from dual In fact, the case is different, the Query Analyzer is considered to be two different SQL statements, must be parsed two times. Generate 2 execution plans. So as a programmer, you should ensure that the same query statements everywhere are consistent, one more space is not! Don't write SQL statements too complex In general, the result of a SELECT statement as a subset, and then query from that subset

response data failure three (perform physical block recovery, perform rman recovery, perform table space point-in-time recovery, perform table and table partition Recovery)Performing data Block physical recoveryPerforming Rman Recovery: Advanced scriptingPerform point-in-time table space recoveryRecovering tables with Rman backup sets12th: Optimizing Rman PerformancePurpose of Rman performance optimizationBasic concepts of Rman

-based Database recovery11th: Diagnostic and response data failure three (perform physical block recovery, perform rman recovery, perform table space point-in-time recovery, perform table and table partition Recovery)Performing data Block physical recoveryPerforming Rman Recovery: Advanced scriptingPerform point-in-time table space recoveryRecovering tables with Rman backup sets12th: Optimizing Rman PerformancePurpose of Rman performance optimizationB

Performance of different Oracle client and Oracle versions **************************************** ******************************** ************** Original Works are from the blog of "Deep Blue blog". You are welcome to repost them. Please indicate the source when you repost them. Otherwise, the copyright will be held legally responsible. Please leave a message

Tags: database backup Oracle Solution Need more information to contact Q2748165793 First Lecture: Introduction to Backup and recovery-related operationsBackup and Recovery SolutionsSecond: Starting the Rman operation and the Rman architectureRMAN ChannelsRman Backup and recovery related operationsConfiguring the Rman Backup EnvironmentConfigure Backup retention PoliciesClient Tools useAbout flashback database and restore PointsUsing

Some time ago in a migration of data pump and exp, found that the difference in efficiency is quite large. Here is an example of a simple comparison. This article discusses the most important factors that affect the performance of data pump imports. Several articles have been written to introduce the performance of Exp/imp and EXPDP/IMPDP, respectively, according to the description of the previous article

space recoveryRecovering tables with Rman backup sets12th: Optimizing Rman PerformancePurpose of Rman performance optimizationBasic concepts of Rman performance optimizationUsing views to diagnose Rman performance issuesTuning Rman Backup Performance13th: Handling Rman-related operational issuesInterpreting messages for Rman outputDiagnosing Rman problems with t

Configuration process of maximum performance mode of physical volume uard Master Database Host edbjr2p1 Slave Database Host edbjr2p2 1. Create a master database [Root @ edbjr2p1 ~] # Xhost + Access control disabled, clients can connect from any host [Root @ edbjr2p1 ~] # Su-oracle [Oracle @ edbjr2p1 ~] $ Dbca The database creation process is omitted... ORACLE_SID

Oracle Database-related data dictionary for performance problem analysis, oracle-related data The nine most important dynamic performance views of oracle! V $ session + v $ session_wait V $ process V $ SQL V $ sqltext V $ bh (prefer x $ bh) V $ lock V $ latch_childr

database, using operating system authentication, do not enter the database user name and password,The login format is usually: Sql>sqlplus/as sysdba2, the user password Authentication: When the user remote connection database, need to use the database user name, password authentication before you can log in,such as: Sql>sqlplus Scott/tiger as Sysdba *********************************************** Declaration **********************************************original works, from the "Deep Blue Blog"

Technorati label: Oracle Font: Small Medium large | printed on: Author: tangshan_ph Source: cnoug blog homepage Oracle performance can be enhanced by adjusting database applications, databases, and operating systems. Appropriate Oracle adjustment can achieve better performance