oracle rac training

With Oracle's standby technology, a single-instance database can be upgraded to a RAC database. This approach can effectively reduce the downtime for single instance migration to the RAC environment. This article describes the establishment of the standby database. The last one completed most of the preparation of the work, the following open the database, but also to set the target database password file

different cluster products have their own characteristics, RAC features include the following points:• Dual-machine parallel. RAC is a parallel mode, not a traditional master and standby mode. That is, all members of the RAC cluster can receive client requests at the same time.• High availability. RAC is a high-availab

Recently helped a customer recover 6 sets of Oracle RAC, both ASM and version 10.2.0.4. Stay up for several days, almost vomiting blood.Here is a brief description of the recovery of one of the libraries, to share with you.Several of these have basically encountered the following ORA-00600 error: Thu Dec 31 11:55:46 2015Success:diskgroup DG1 was mountedThu Dec 31 11:55:50 2015Errors in FILE/

OCR corresponds to the registry of Windows. For Windows, all software information, users, configuration, security, and so on are all in the registry. And the cluster, again, all cluster-related resources, configurations, nodes, and RAC databases are all in this warehouse. If OCR is corrupted, the Cluster service initiates an exception and needs to fix OCR. Therefore, the management and maintenance of OCR is very important for the whole cluster. This p

Starting to test Oracle 11g RAC, the current performance is limited, so a single node RAC is installed. The procedure is as follows: Nic binding Modify ifcfg-bond * ifcfg-eth * in/etc/modprobe. conf and/etc/sysconfig/network-scripts * I will not talk more here Configure xmanager connection VI/usr/share/TPD/defaults. conf Change enable = false under [XDMCP] t

Solution: Native: listNetInterfaces: [3] When Oracle 10201 RAC is rootI. Problem 10201 when RAC is installed on OEL5, the following error is reported for the root 2nd nodes:[Root @ o10n2 install] #/oracle/product/10.2.0/crs/root. shWARNING: directory '/oracle/product/10.2.0'

Oracle 11gR2 RAC 11.2.0.4 fully automated 11.2.0.4.20170418 psu steps, (The environment of patch p6880880_112000_Linux-x86-64.zip and p25476126_112040_Linux-x86-64.zip are put in/soft directory, Grid and oracle users have read and write permissions on the/soft directory, and only the root user can perform the whole process. Database Version 11.2.0.4

Tags: using IPCRM to clear the database HP UX memory utilization issuesTo account for the environment, is the real-time production database host network. HP-UX 11.31+oracle 10.2.0.4.0 RAC cluster.Two machines outdoor rac,essdb3 and ESSDB4 two machines.Physical memory 128g,sga allocated 64G,PGA 5G. Morning found ESSDB4 host glance run only 6G of free memory.Use th

Online Online RAC2 ORA.RAC2.VIP Application Online Online RAC2 Now the RAC State is all right and all services have been started. Here's how to modify the SID of 2 RAC Machines, respectively: Orcl3, Orcl4 1. Create Pfile, then ORCL1--->orcl3 orcl2--->orcl4, and transfer to another node, other parameters are not changed Sql> Conn/as SYSDBA Connected. sql> create pfile= '/tmp/pfile ' from SPFile; File

With Oracle's standby technology, a single-instance database can be upgraded to a RAC database. This approach can effectively reduce the downtime for single instance migration to the RAC environment. This article describes the switchover process of a single-instance environment and a RAC environment. The RAC Environm

In Oracle RAC, in addition to the TAF Method Based on the client, there is also the TAF Method Based on the server. You can regard the TAF method of the server as an upgraded version of the TAF method of the client. The TAF of the server must be configured on the server. This is done through the Service. This article describes how to configure the server-side TAF in Ora