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
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
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
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
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,
Tags: Oracle OCR Backup and RecoveryIntroduction to 1.OCR Disks The problem with forgetfulness is that each node has a copy of the configuration information and the configuration information of the modified node is not synchronized. Oracle's solution is to put this configuration file on the shared storage, which is the OCR Disk. The whole
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
(Document ID 1062983.1) Applies To:Oracle database-enterprise edition-version 11.2.0.1.0 to 11.2.0.4 [Release 11.2]Information in this document applies to any platform.GoalIt is not possible to directly restore a manual or automatic OCR backup if the OCR are located in an ASM disk group. This was caused by the fact, the command ' Ocrconfig-restore ' requires ASM to being up running in order to restore a n
[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
The company has a need, simple point of need to recognize from a picture of Chinese, through Python to achieve, of course, other programs can be done, as long as the implementation, while the small part of the main learning Python, so the mention of Python. A small white on the internet to travel a day, finally found a trace of silk thoughts, specially in this share, I hope the great God put forward valuable comments.Today is still learning OCR algori
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
Tags: des style using OS io for AR artHow 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 depends on OCR and Votedisk, so the loss of OCR or Votedisk will cause cluter not start properlyAssuming that the original
Ocrad.js is equivalent to a pure JavaScript version of the Ocrad project and is automatically converted using Emscripten. This is a simple OCR (optical character recognition) program that can scan text in an image back to text.Unlike Gocr.js,ocrad.js, it is designed as a port, not a wrapper around the executable. This means that subsequent image processing does not involve reinitialization of the executable
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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