performance tuning in oracle 11g

undertakes read operations. This architecture is suitable for read-intensive types of applications, and read performance can grow linearly by increasing the number of Slave DB. To avoid a single point of failure in Master DB, the cluster typically uses two Master db for dual-machine hot standby, so the entire cluster has very high levels of read and write availability. In addition to providing Active Standby functionality from

We have provided an overview of the unique features of Oracle 11g R2. At the same time, we also describe the enhancement of the data warehouse performance related to Oracle 11g R2. The following describes the enhanced features of Data guard in

slave database and verify the result. 2. Demonstration of creating a physical standby Database -- Demo Environment [Oracle @ linux3 ~] $ CAT/etc/issueenterprise Linux Enterprise Linux Server Release 5.5 (Carthage) kernel \ r on an \ m [Oracle @ linux3 ~] $ Sqlplus-vsql * Plus: Release 11.2.0.1.0 production -- master database: sybo3 -- slave Database: sybo5 -- configure physical standby, use the best

generatingforeground processes, while the LGWR performs the rest of the work, for betterCPU and cache efficiency. prior to Oracle Database 11g, the LGWR solelyuncmed the log block checksum. If thisparameter is set to OFF, DBWn calculates checksums only forthe SYSTEM tablespace, but not for user tablespaces. In addition, nolog checksum is already med when this parameter is set to OFF. -- If this parameter i

Databases are mainly used to partition different types of databases. In actual applications, most Oracle databases use the Partition Function to improve query performance. The Oracle 11g partition function can simplify the daily management and maintenance of databases, this greatly reduces the workload of DBAs (Databas

following options: ASM This is the preferred storage option for Oracle and is the only configuration supported in the RAC Standard Edition OCFS2 Bare devices are not recommended, not only because they are deprecated by the new Linux kernel, but also not supported in Oracle 11.2 Network File System (NFS) The Red Hat Global file System is only supported in Red Hat and

: there can be multiple processes, which are responsible for applying LCR to the standby database. 3. Create a logical standby Database A. There are many ways to create a physical standby database first. For Oracle 11g, you can create a physical standby database directly from the active database, it can also be created using the duplicate Method Based on 10 Gb RMAN. The creation of the physical standby dat

or ASM. Block devices and bare devices will no longer be supported in Oracle12. Oracle strongly recommends using at least 3 voting disks in a different location. When using ASM to manage voting disks, you need to be aware of the redundancy levels of disk groups and failure groups. Note that all copies of voting disk are in one disk group, and you cannot distribute voting disks across multiple disk groups. When using an externally redundant disk group

First, if the Oracle database is installed, this is roughly the directory:D:\oracle\product\11.2.0\client_1\oui\jlib\classes12.jar orD:\oracle\product\11.2.0\dbhome_1\oui\jlib\classes12.jarAttention:For Oracle11 Jdbc\lib There is no Classer12.jar file (Note: I installed in the Windows8 11g, this file is present, import

. Enter the graphic interface # Cd/app/oracle/sqldeveloper/ ./Sqldeveloper. sh 19. To enable oracle later, modify the oracle Kernel Modify the Vi installation directory/. bash-profile Oracle-home/sqldeveloper If Step 1 is not performed, the listener (lsnrctl start) and Database Service (sqlplussystem/Sa123456 as sysdba

Tags: size reliable moderator large online benefits audit security soft High reliability. The ability to place server failures, site failures, and human errors wherever possible. High security information. Data security and compliance can be ensured with a comprehensive meeting of row-level security, fine-grained auditing, transparent data encryption, and data. Better data management. Easily manage the entire lifecycle of information for the largest database. One of the leading bu

Tags: oracle oracle 11g Redhat DatabaseFor beginners who want to learn Oracle, see the veteran. Operating System Information: VBox virtual machine software version: Install the required software: Required Software:Http://pan.baidu.com/s/1mgl8kzu Specific installation steps:A. Create a new virtual machine and install

disk. Split-brain has obvious harm to clusters. Cluster software vendors must provide solutions to solve this problem. Oracle cluster software (grid infrastructure in 11g) uses a quorum device ), it is called voting disk to determine the members in the cluster. All nodes in the cluster share a voting disk. When a node cannot send heartbeat to the internal network or voting disk, It is evicted from the clus

Why cannot I enable ADG for Oracle 11g slave database? Today, we have encountered a strange problem, but there is an essential cause and effect behind the strange phenomenon.During an Environment check in the afternoon, it was found that the standby database was in the mount stage. This was a 11gR2 database, and it was a waste of time without ADG. I felt too much to do this.So I tried to start the open stag

Tags: revert to my many help summary pen. NET Preparation SpecialTransferred from: https://www.jb51.net/article/52269.htm This article mainly introduces the Oracle 11g Dataguard parameters in detail, including the independent parameters, the main library parameters, the library parameters detailed description, the need for friends can refer to. Note: This article is translated from

This article mainly describes which services are Oracle 11g must be opened and detailed introduction of these services, the need for friends can refer to the followingAfter successfully installing the Oracle 11g database, you will find that your computer is running slower, that your computer is running faster with a lo

following options: ASM This is the preferred storage option for Oracle and is the only configuration supported in the RAC Standard Edition OCFS2 Bare devices are not recommended, not only because they are deprecated by the new Linux kernel, but also not supported in Oracle 11.2 Network File System (NFS) The Red Hat Global file System is only supported in Red Hat and

Tags: http using ar file data div sp on CUsing the Oracle Odp.net 11g. NET Program Publishing methodContent Summary: Odp.net 11g is an ADO released by Oracle for. NET programs to access the Oracle database, with better performance

Oracle's leadership in the data warehouse field. Oracle Database 11 provides a comprehensive foundation for data warehouses, integrating industry-leading scalability and performance, integrated analysis, embedded integration, and data quality features ." Oracle Database 11 GB Oracle Database is the only database desig

Oracle 11g real-time SQL monitoring Oracle,In-depth analysis of Oracle,Reading Notes April 9 th, 2010Author: dbtan | [indicate the source and author information in hyperlink form during reprinting] Link: http://www.dbtan.com/2010/04/real-time-sql-monitoring-in-oracle11g.html Orac