OCR is like a Windows registry that stores all configuration information related to the cluster and RAC database. It is also a public configuration, that is, multiple nodes share the same configuration information. Therefore, this configuration should be stored on the shared disk. This article mainly describes the OCR of the cluster and the amnesia caused by OCR
As a cluster, oraclecluster needs shared storage to store the configuration information of the entire cluster. ocr is the place where the configuration information is stored in use cases. The storage capacity of ocr is generally not too large.
As a cluster, oracle cluster needs shared storage to store the configuration information of the entire cluster. ocr is th
11gR2 RAC exclusive mode replace votedisk encounters PROC-26, restore ocr encounters CRS-4000, PROT-35, proc-26crs-4000
Link: http://blog.itpub.net/23135684/viewspace-748816/
The storage data of the 11gR2 RAC system is completely lost. The software of all nodes is installed on the local disk, and the local disk retains the OCR backup, the following describes how to restore the normal operation of Clusterwar
Managing Oracle clusterware (OCR)Oracle Clusterware places the configuration information of the entire cluster on shared storage. The information includes the list of cluster nodes, the ing between cluster database instances and nodes, and the CRS Application resource information. The storage location is on the OCR Disk. in the entire cluster, only one Node can perform read and write operations on the
1. Oracle Cluster Registry (OCR)
OCR is used to solve the amnesia problem in the cluster,
The Cluster Environment configuration file is not stored in a centralized manner, but each node has a local copy. When the cluster runs normally, you can change the cluster configuration on any node, in addition, this change will be automatically synchronized to other nodes.
There is A special situation: node A is
View the OCR storage location
[[emailprotected] ~]$ ocrcheckStatus of Oracle Cluster Registry is as follows : Version : 2 Total space (kbytes) : 262120 Used space (kbytes) : 5432 Available space (kbytes) : 256688 ID : 982267297 Device/File Name : /oradata/crs_data/ocr.dat Device/File integrity check succeeded
Ma JianEmail:[email protected]Published: 2012.07.02Update:2012.07.09Supplemental non-Simplified Chinese version contentSince the release of Modi-based Djvutoy, Freepic2pdf, and Pdg2pic, many people are asking the same question: Can you not install Office 2003/2007 or SharePoint Designer 2007, Let Modi-based software normal OCR? After all, for Simplified Chinese, even if you install only Modi in SharePoint Designer 2007, nearly 650 MB, the office 2007
Oracle Clusterware puts the entire cluster's configuration information on shared storage, which includes a list of cluster nodes, a cluster database instance to a node map, and CRS application resource information. It is also stored on an OCR disk (or OCFS file). Therefore, the importance of this configuration file is self-evident. Any action that makes an OCR configuration change is recommended to back up
P509 WenpingIf you use dbca to create databases, cluster services, or use netca to configure cluster listeners,The corresponding configuration results are automatically written into the OCR registration records. However, if you have manually created a database (create database) and manually editedThe listener file is not recorded in OCR. This requires the Administrator to use the srvctl add command to manua
Oracle Clusterware places the configuration information of the entire cluster on shared storage. The information includes the list of cluster nodes, the ing between cluster database instances and nodes, and the CRS Application resource information. That is, it is stored on the ocr disk (or ocfs file. Therefore, the importance of this configuration file is self-evident. We recommend that you back up ocr imme
Key words: OCR, SDK, vin recognition, business license identification, seven-segment digital tube identification, invoice code identification, property card identification, meal ticket identification, invoice identification, issuing ticket identification, mobile phone number recognition, water meter identification, meter identification, gas meter identification, real estate identification, the identification of the yuan Crown sizeWen Tong Hui-Vision
OCR is equivalent to the Windows registry. For Windows, all software information, users, configurations, and security are stored in the registry. In the same way, all cluster-related resources, configurations, nodes, and RAC databases are stored in this warehouse. If OCR is damaged, the cluster Service Startup exception occurs. You need to fix OCR. Therefore,
Comprehensive understanding of Asprise OCR: Image/Barcode Recognition tool
1. Introduction to OCR
OCR (optical Character recognition)-refers to an electronic device (such as a scanner or digital camera) that checks the printed characters on the paper, determines its shape by detecting dark, bright patterns, and then translates the shape into computer text using c
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. Theref
[Oracle] export and import of OCR backup and recovery
Back up and restore OCR using exported import:
Before adjusting the cluster, for example, adding or deleting nodes, you should back up OCR once. You can use export to back up to the specified file.
Lab environment:
OS: OEL5.6
RAC: 10.2.0.1.0
(1) Disable CRS for all nodes
Node 1:
[Root @ rac1 crsd] # crsctl sto
How the Windows environment recovers (Oracle 11g Grid) OCR voting corrupted clustersAfter the Oracle 11g OCR can be placed on the ASM disk, and ASM boot relies on OCR and Votedisk, so the loss of OCR or Votedisk will cause cluter not start properlyIf the original OCR locatio
Oracle recommends that you back up OCR when you adjust the cluster, such as before adding or deleting nodes. You can use export to back up to a specified file. If replace or restore is performed, we recommend that you use the cluvfy comp ocr-n all command to perform a comprehensive check.
Run the following command under an oracle user:
[Oracle @ felix1 bin] $ cluvfy comp
Tags: RAC OCR backup recoverybackup and restore of OCR using Export import:Before making adjustments to the cluster, such as adding or deleting nodes, you should make a backup of OCR , and use export to backup to the specified file. Lab Environment:OS:OEL5.6RAC:10.2.0.1.0(1) Turn off CRS for all nodesNode 1:[[email protected] crsd]# Crsctl stop CRSStopping resour
Recently to do word recognition, do not let the interface directly with others, so you can only try to use Open source class library. TESSERACT-OCR is an open-source word Recognition project from Hewlett-Packard, which allows us to quickly build a text-to-text recognition system to help develop an OCR system that recognizes images. Because of the Windows environment Development, I also have to install the s
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