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Oracle 11g RAC listener offline After the Oracle 11g RAC listener has changed the network, the listener process offline appears, and the two nodes are switched frequently. Check the log/var/log/message to find frequent registration and revocation actions. Listening log/u01/app/orac
Resolving Oracle clients can connect to 11g RAC VIP, but cannot connect scan IP issues Some time ago configured a set of HP ux11.31 oracle11g R2 RAC, after the configuration is completed, the client can connect VIP and Scan IP connection database, remote clients can only connect VIP access to the database, through the scan IP access to the database can not connec
Oracle 11gR2 RAC installation error-clock not synchronized System Environment: Operating System: RedHat EL5 Cluster: Oracle GI (Grid Infrastructure) Oracle: Oracle 11.2.0.1.0 : RAC System Architecture For
Oracle 10g rac ip/VIP address modification exampleI. Preparations 1. Database Information Operating system version: OEL5.4 x64Database Version: Oracle 10.2.0.5 x64 RAC2. IP address information Note: The server host name cannot be changed. If you want to change the name, you need to reinstall CRS to solve the problem. It is better to reinstall it.The environment i
Oracle Log Full system disk is full, causing the database to hang up and the Archivelog log is full, but the database is not open, unable to login, fortunately, can also go to Mount state. Workaround:1. According to the error View appearance: CRS service downCrs-0184:cannot communicate with the CRS daemonDelete/var/tmp/.oracle DirectoryTo delete an Oracle ALTER L
Tags: Oracle 12c RAC ClusterEnvironment preparationNode One: CentOS 6.8 x86-64CPU:4C Memory: 8g swap:8gBusiness ip:192.168.50.20 Private Network ip:10.98.50.20Node two: CentOS 6.8 x86-64CPU:4C Memory: 8g swap:8gBusiness ip:192.168.60.21 Private Network ip:10.98.50.21Database and cluster Software:Linuxamd64_12102_grid_1of2.zipLinuxamd64_12102_grid_2of2.zipLinuxamd64_12102_database_1of2.zipLinuxamd64_12102_da
In Oracle RAC, in addition to the TFA Method Based on the client, there is also the TFA Method Based on the server. You can regard the TFA method of the server as an upgraded version of the TFA method of the client. The TFA on the server must be configured on the server. This is done through the Service. This article mainly describes how to configure the TFA of the server through service in
4096dec1101:02racgdrwxr-x---2gridoinstall4096dec 1101:02srvmdrwxrwxr-x2gridoinstall4096dec1101:02 xag[[emailprotected]rac1]$However, in the 12c, there is still the above directory structure, but there is nothing in the content. Since 12c, the log structure of the RAC has changed.There are two types of RAC in 12c:1. Standard ClusterName of Alert Log:alert.logLocation of alert log: $
Friends who are interested in this course can add my QQ2059055336 and contact me.This course focuses on Oracle RAC architecture and how it works, understanding and mastering the relevant technologies under the RAC database, such as cache Fusion, Failover, load balance, FAN, OCR, and voting disk. Through the implementation of the VMware virtual environment, the in
In most businesses, the main business requirement for true Oracle Application cluster (RAC) configuration based on the Linux platform is the scalability of the database layer in the entire system-in this way, when the number of users increases, you can add additional instances to the cluster to distribute the load. In Oracle
Tags: RAC failover Viewing listening, using a grid user 11GRAC1:11grac1->lsnrctlstatus lsnrctlforlinux:version11.2.0.3.0- Productionon14-aug-201500:30:26 copyright (c) 1991,2011,Oracle. allrightsreserved. connectingto (description= (address= (PROTOCOL=IPC) (Key=listener)) statusofthe LISTENER------------------------alias listener version tnslsnrforlinux: version11.2.0.3.0-production startdate
Environment: Two HP ML570 Linux AS4.5 Oracle 10g The two servers perform Oracle RAC and connect to HP MSA1000 through SAN Switch Fault symptom: Because the cabinet where one Oracle rac node is located is out of power, two rac
Tags: database oracle Oracle RAC Snapshot DBAStatspack is the product of the Oracle 9i ERA, and is the predecessor of AWR, which has a cross-milestone significance for monitoring and analyzing database performance. After the Oracle 10g, AWR replaced the statspack. Nonetheles
Oracle RAC Load Balancing allows connections initiated from clients to be effectively allocated to instances with low listener load. There are two methods to achieve load balancing on the client. One is to configure the load_balance of the client, and the other is to configure the remote_listener parameter on the server. The two methods have their own advantages and disadvantages, and they are not mutually
to make it easier for project team developers to use the oracle11g RAC database, install a client and configure Plsql to access the database server. Download The following three packages from Oracle official: Instantclient-basic-win32-11.2.0.1.0.zip This is the core package. Instantclient-jdbc-win32-11.2.0.1.0.zip contains the JDBC driver package Instantclient-sqlplus-win32-11.2.0.1.0.zip The simplest sqlpl
RAC Local_listener, an Oracle appendix first a conversation: www.2cto.com cainiao asked: I set local_listener = 'listener1' In the parameter file, and then start the database to report an error. SQL> startup ORA-00119: invalid specification for system parameter LOCAL_LISTENER ORA-00132: syntax error or unresolved network name 'listener1' syntax incorrect? Www.2cto.com old bird back: tnsnames to be on the se
The RAC nature is also a database, using a distributed lock manager. The DLM role is to coordinate competitive access to resources between instances, while competition within instances is the same as for single instances. In a RAC database, a node wants to modify the data, it needs to DLM send the request, through the DLM control the data access between the authorized node instances, the granularity of inst
Tags: oracle RAC DeploymentLsb_release-aVmware-vdiskmanager.exe-c-S 20000mb-a lsilogic-t 2 D:\ORACLE_RAC\OCR.VMDKVmware-vdiskmanager.exe-c-S 20000mb-a lsilogic-t 2 D:\ORACLE_RAC\OCR2.VMDKVmware-vdiskmanager.exe-c-S 20000mb-a lsilogic-t 2 D:\ORACLE_RAC\VOTINGDISK.VMDKVmware-vdiskmanager.exe-c-S 30000mb-a lsilogic-t 2 D:\ORACLE_RAC\DATA.VMDKVmware-vdiskmanager.exe-c-S 20000mb-a lsilogic-t 2 D:\ORACLE_RAC\BACK
1. Clear TasksPrepare a RHEL5 PC to act as a San device, a SAN (both as a DNS and timing system)Prepare two RHEL5 PCs to act as RAC nodes, R1 and R2Install RAC on ASM disk, including OCR, voting, library2. Modify kernel parameters and shell limitations of R1 and R2On R1 and R2, respectively.Vim/etc/sysctl.conf------------------------------------------Kernel.shmmax = 4294967296Kernel.shmmni = 4096Kernel.shma
Tags: how Oracle database information is archivedOracle RAC Archive settings need to be less simple than single-instance setup, with some details to be noticed during the open processArchive Open Ideas:1: See if the database is open for archiving2: Create a shared directory (archive must be placed on shared storage)3: Set RAC to single-instance mode4: Close indiv
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