directly obtained from redo; nouselatestversion makes extract unable to obtain data from undo, ignore this condition instead of getting the current value from the source table.9. statoptions reportfetch: When the ggsci command stats is used, the obtained ROW statistics are displayed.10. warnlongtrans 1 h, checkinterval 5 m
Ggsci (Rac1) 6> edit Params w1ext
Extract w1extUserid goldengate, password goldengateExttrail/opt/Gg/trails/W1Discardfile w1extdsc, append,
ASM-scalability and limits [ID 370921.1]
ASM imposes the following limits:
(1) 63 disk groups in a storage system(2) 10,000 ASM disks in a storage system(3) 2 terabyte maximum storage for each ASM disk (the bug 6453944 allowed larger sizes, but that led to problems, see note 736891.1 "ORA-15196 with ASM disks larger than 2 TB ")(4) 40 exabyte maximum storage for each Storage System(5) 1 million files for each disk group(6) 2.4
Http://hi.baidu.com/dilijia1002/blog/item/38f0b5cef747c70d92457eb1.html
Byte is a unit of measurement used by Computer Information Technology to measure storage capacity and transmission capacity. one byte equals to eight-bit binary. Currently, we usually use the smallest unit of computing storage space (in fact, there are smaller bit, 1 byte = 8 bit ).
However, for hard disks or buckets, the minimum unit we use is KB (kilobyte), which is the 10th byte of 2. The conversion from byte to byte is 1
"), the computer's representation of many data are binary units, and 1 bits represents a binary digit, only 0 or 1;byte is the most commonly used in the computer unit, 8bit 1byte, Many places with 1b represent 1BIT,1B represent 1byte. 1 kilobyte equals 1000byte (10 bytes, or 1024byte, of 1kilobyte equals 2 for binary calculations in the computer). The conversion of some other units is described below:1 kilobyte KB = $ (10^3) byte1 megabyte MB = 1 (10^6) byte1 gigabyte GB = 1 (10^9) byte1
MySQL Group takes the first few records of each group (rank) with group by and order byHttp://www.jb51.net/article/31590.htm--group The data of the row with the maximum (small) value by a fieldThe code is as follows:/**/--Create the table and insert the data:The code is as follows:Create TableTB (namevarchar(Ten), Valint, Memovarchar( -)) Insert intoTbValues('a',2,'A2 (second value of a)') Insert intoTbValues('a',1,'the first value of a a1--a') Insert intoTbValues('a',3,'the third value of th
harqprocess number field)
(3) Each terabyte in space-division multiplexing has its own Rv/ndi purpose: to allow only one terabyte to be re-transmitted. That is, the 2 TB of empty division multiplexing is irrelevant, and when one of the terabytes fails, another successfully received TB does not need to be re-transmitted, and a successful TB harqprocess can be used for the next new pass. (upstream processing
ogg process split (single table split into multiple processes)Overview:The OGG process split describes how to split multiple tables in one inbound process into another process. This article will focus on how to use multiple processes to library a single table at the same time. Applicable conditions:1) The inbound process synchronizes only one table, but still has a delay of 2) target segment host CPU, memory pressure is not large enough to have sufficient resources to add a new inbound processTh
. Yahoo! Opened an independent team to goug cutting specializing in the development of Hadoop.In January 2008, Hadoop became the top project for Apache. Hadoop was then successfully applied to other companies, including Last.fm, Facebook, the New York Times, and so on.In February 2008, Yahoo! announced that its search engine products were deployed on a Hadoop cluster with 10,000 cores.In April 2008, Hadoop broke the world record, known as the fastest system for sorting 1TB data. For a record of
Tags: Oracle training Oracle Tutorial Oracle video Oracle Video tutorial Oracle Database tutorialOracle Video Tutorial Goals Oracle Video tutorial, wind Brother this set of Oracle Tutorial training learning how Oracle database design an Rman backup strategy for a terabyte database, Rman Backup and recovery case-lost all files, lost individual data files, lost entire data and system table space, Loss of control files and parameter files, storage of c
you press create, the following screen appears. After selecting " Standard partition ", click "Generate".mount point : Select "/boot"; file system type : Use the default "EXT4 log file system"; size : Enter the size of the allocation, in megabytes; Other Size options : Select fixed size , click OK button.Step three : Create "/"Continue to select free space, when you press "create", the following screen appears. After selecting "Standard Partition",
group, I only need to operate on it..
2. view the volume group information========================================================== ============================================
# Lsvg rootvgVolume group: rootvg identifier: 00098d9f00004c00000000f9b120700bVG state: Active pp size: 64 megabyte (s)VG permission: read/write total PPS: 542 (34688 megabytes)
Max LVS: 256 free PPS: 390 (24960 megabytes)
LVS: 9 u
from the device . Kilobytes. The amount of data sent out.Kb_wrtn: The total number of kilobytes written to the device . Kilobytes. The amount of data taken in.mb_read/s: The number of megabytes per second read from the device . Megabytes.MB_WRTN/S: The number of megabytes per second written to the device . Megabytes.Mb_read: The total number of megabytes rea
Tags: info date images als for RM-RF host command serviceHttps://www.ancii.com/database/30842.htmlMicrosoft released SQL Server for Linux, but the installation actually needs 3.5GB of memory, which makes most of the cloud host users can not try this new thing this article I will explain how to crack this memory limit to see the key can jump directly to the 6th step, only need to replace 4 bytes to break the limit First, follow the steps given by Microsoft to install and configure the Https://doc
In the author's Nvdimm run Vdbench and its own test program found: The different cache mode has a huge impact on system performance, the following data vividly illustrates this:Write-through mode:Writestook 47.227898 Megabytes per secondReadstook 1873.360718 Megabytes per secondWrite-combing mode:Writestook 1747.500977 Megabytes per secondReadstook 96.834496
permission:read/write Total pps:542 (34688 megabytes)MAX lvs:256 free pps:390 (24960 megabytes)Lvs:9 used pps:152 (9728 megabytes)OPEN Lvs:8 Quorum:2Total Pvs:1 VG Descriptors:2STALE pvs:0 STALE pps:0ACTIVE pvs:1 AUTO On:yesMax PPs per pv:1016 MAX pvs:32LTG size:128 kilobyte (s) AUTO Sync:noHot Spare:no#===========================================================
This time I had two questions: A, B, and C. Then I had one problem (n % 3) and I was able to ac Q ^ Q cry ...... If C adds that line, how handsome it is ...... A. Timeout
This time I had two questions: A, B, and C. Then I had one problem (n % 3) and I was able to ac Q ^ Q cry ...... If C adds that line, how handsome it is ...... A. Game With Sticks time limit per test 1 second memory limit per test 256 megabytes input standard input output standard ou
have a JSP network server, download it before you start the tutorial. The following servers can be downloaded or developed for free:
Blazix (1.5 Megabytes, JSP, Servlets and EJBs)
From www.blazix.com/blazix.html
ServletExec (3.8 Megabytes, JSP and Servlets)
From www.uniyeware.com/servletexec/
JRun (11 Megabytes, JSP, Servlets and EJBs)
From www.jrun.com/
Web
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