opc datahub

Want to know opc datahub? we have a huge selection of opc datahub information on alibabacloud.com

7 signaling: SCCP layer Overview

are its SIF fields. It consists of the following parts: • Routing selection label structure: OPC + DPC + SLS • Message Type: Used to identify different SCCP messages. It is a required byte for all messages and determines the function and format of the message. See the table below: • UDT Message format: 10. Related Concepts: Ø subsystem SSN: Indicates the upper-layer Message Type of SCCP. Different user sections (Common SSN lists are as follows ):

Read consistency analysis: undo, read consistency: undo

--------------------12 BAt this time, we still read the data before the modification. Here a is read from the undo, and the following dump analyzes the process:SQL> select t. *, rowid from t;ID NAME ROWID--------------------------------------1 c AAASunAAEAAABuuAAA2 B AAASunAAEAAABuuAABWe can use the packages provided by oracle to obtain the data file number and block number of the first data:SQL> show user;USER is "SYS"SQL> select dbms_rowid.rowid_relative_fno (rowid) fno, dbms_rowid.rowid_block

Gray hat hackers: Ethics, penetration testing, attack methods, and vulnerability analysis technology of Justice hackers (version 3rd)

meaning of Cross-Site Scripting 318Chapter 4 OIP attack 17th17.1 what is VoIP 32317.2 protocol used by VoIP 32417.2.1 session 32417.2.2 Megaco H.248 32517.2.3 H.323 32517.2.4 TLS and dtls 32617.2.5 SRTP 32717.2.6 zrtp 32717.3 VoIP attack type 32717.3.1 enumerative 32817.3.2 sip password cracking 32817.3.3 eavesdropping and group capture 32917.3.4 dos 32917.4 how to prevent VoIP attacks 335Chapter 4 SCADA attack 18th18.1 meaning of SCADA 33718.2 protocols used by SCADA 33818.2.1

Yifan industrial control automation Overview

/yefanqiu/archive/2005/11/18/532436.aspx Successful development of Siemens softnet driver Http://blog.csdn.net/yefanqiu/archive/2006/06/16/803204.aspx Iii. Industrial Control Configuration Software 1. yfioserver Configuration Software Development (for background only) Http://blog.csdn.net/yefanqiu/archive/2005/03/11/317172.aspx Yfioserver configuration device Io Service System Http://blog.csdn.net/yefanqiu/archive/2005/10/05/495547.aspx OPC server

Instructions for Zend OPCache to accelerate PHP

the php.ini The code is as follows Copy Code Zend_extension=/usr/local/php/lib/php/extensions/no-debug-zts-20100525/opcache.soopcache.memory_consumption=128Opcache.interned_strings_buffer=8opcache.max_accelerated_files=4000Opcache.revalidate_freq=60Opcache.fast_shutdown=1Opcache.enable_cli=1 128 means to allocate 128M memory to it, then restart Apache, with Phpinfo to see whether it takes effect, display the following information to show that the effective

Windows file formats

Microsoft Office Data Connection text/X-MS-ODC Odccubefile File Odcdatabasefile Odcnewfile File Odctablefile File Ogg Winamp media files OGM Winamp media files OKT Winamp media file OPC Microsoft Cleanup Wizard File Oqy Microsoft Office Excel OLAP file query OTF OpenType Font File P10 Certificate Application application/pkcs10 P12 personal information exchange application/x-pkcs12 P7b PKCS #7 Certificate Application/x-pkcs7-certificates P7c digital i

The cloud protocol of the industrial Internet of things will be dominated by MQTT+SSL/TLS and the protocol format is based on JSON

. The large scale of state-owned enterprises, high demonstration effect, first from the pilot, the latter gradually promoted.This year most of the technical staff to consult know Baidu Tiangong, although not clear about the specific role of Baidu Tiangong, but all know that Baidu has an internet of things platform.MQTT will become the preferred cloud communication protocol for the domestic industrial Internet of things, especially in large-scale equipment manufacturers remote operation and maint

. NET 10-year review

crushing. NET technology stack's potentialSince. NET highlight is productivity, in combination with my personal example.Originally intended to design configuration software. Unit is not a software company, my responsibility is not to design configuration software. At first it was just a whim. But faced with a big problem. I see the configuration software, Wincc,intouch, are giants.If it wasn't for the brain to burn out, you wouldn't want to do it on your own. But after I analyzed it, I found th

Recovery cases for several sets of ASM RAC for Oracle databases

$datafile where file#=40;NAME--------------------------------------------------------------------------------+dg/xxxx/datafile/undotbs4At the same time dump the undo block and find that it does feel a bit unusual, as follows: ********************************************************************************UNDO BLK:xid:0x0009.01b.0014320a seq:0xa47 cnt:0x1 irb:0x1 icl:0x0 flg:0x0000REC Offset rec Offset rec Offset rec Offset rec Offset--------------------------------------------------------------

Example of dealing with a ora600[4194 in Oracle]

_ptrglError 607 found in the attempt file because there is ORA-607 in the previous error number Dump Event Group for session10046 Trace name context level, forever10015 Trace name context level, foreverDump Event Group for SYSTEMError message 607 in Redo application callback-->607– View the redo information below typ:0 Cls:16 Afn:1 dba:0x00400191-->undo block address obj:4294967295 scn:0x0001.2483756a seq:1 op:5.1-->Undo blocks or Undo Segme NT Header-kturdbKtudb redo:siz:256 spc:6602 flg:0x0

Siemens PLC A Fetch/write communication method based on TCP

Recently in the study of Siemens PLC superior industrial Control software communication, in addition to OPC server, Prodave two, to understand that Siemens Ethernet Communication template provides a Fetch/write communication based on TCP, this way without PLC side programming can get all the data in Plc, It can be used to exchange data with S7 device or PC, this article briefly introduces the way of usage. See " Siemens PLC Implementation of the use

Oracle Space Management Experiment (eight) data block format Analysis--dump combined bbed

on a block: --CSC:0X00.874DB6 delay block Cleanup when scn--query, third commit--three ITL will do delay block cleanup --flg:e--refers to the use of the ASSM, if the O means the free list --typ:1-Data-transaction-type blocks (and: The type:0x06 of data size), storing tables and indexed data. brn:0 bdba:0x10001d8 ver:0x01 opc:0 inc:0 exflg:0 Itl Xid Uba Flag Lck SCN/FSC 0x01 0x0002.01a.00001382 0x00c00b70.0569.07--u-2 FSC 0X0000.00874DBB 0x02

How to manually commit a transaction using bbed in Oracle

:0x0100019c Object ID on block? Y SEG/OBJ:0XCEF0 csc:0x00.c3cf8 itc:3 flg:e typ:1-DATA brn:0 bdba:0x1000199 ver:0x01 opc:0 inc:0 exflg:0 Itl Xid Uba Flag Lck SCN/FSC 0x01 0xffff.000.00000000 0x00000000.0000.00 C---0 SCN 0x0000.000c3cf8 0x02 0x0006.02b.000001a1 0x008000d0.00f6.2a----FSC 0x0000.00000000 0x03 0x0000.000.00000000 0x00000000.0000.00----0 FSC 0x0000.00000000 Here we can see that we lck the record in 10 tables This is when we use b

Analysis of redo log content format generated by DML statements in non-IMU mode

:0x0000.00702f08 Subscn:1 01/06/2014 20:34:13 (LWN rba:0x000136.0000000d.0010 len:0002 nst:0001 scn:0x0000.00702f08) Change #1 typ:0 cls:21 afn:3 dba:0x00c000a0 obj:4294967295 scn:0x0000.00702eda seq:1 op:5.2 enc:0 rbl:0 Ktudh redo:slt:0x0003 SQN:0X00000EAA flg:0x0012 siz:112 fbi:0 uba:0x00c01ac7.0250.25 pxid:0x0000.000.00000000 Change #2 typ:0 cls:22 afn:3 dba:0x00c01ac7 obj:4294967295 scn:0x0000.00702ed9 seq:3op:5.1 rbl:0 Ktudb redo:siz:112 spc:3494 flg:0x0012 seq:0x0250 rec:0x25 Xid:0x

Oracle (DBaaS) Service Introduction

' user on the ' public IP address ' from your service det Ail page.$ ssh-i./myoraclecloudkey [email protected][[email protected] ~]$Once connected, you can do all the usual stuff.[[email protected] ~]$ sqlplus/as sysdbasql*plus:release 12.2.0.1.0 Production on Tue Nov 8 09:44:42 2016Copyright (c) 1982, Oracle. All rights reserved. Connected to:oracle Database 12c Enterprise Edition Release 12.2.0.1.0-64bit productionsql> ALTER SESSION SET contain ER = PDB1; Session altered. sql> CREATE USER te

Lesson three unit8 mariadb

databaseDrop TABLE Linux # #删除Linux表650) this.width=650; "src=" Https://s4.51cto.com/wyfs02/M00/95/C7/wKiom1kZllLz1R6DAABCTE4mz04883.png "title=" PDIM@FPDA2NJKP) dal9m (~j.png "alt=" Wkiom1kzlllz1r6daabcte4mz04883.png "/>Drop Database Westos # #删除westos库650) this.width=650; "src=" Https://s4.51cto.com/wyfs02/M00/95/C7/wKiom1kZlm_CvWXgAAByOQ3QXgM122.png "title=" JHCK3 %opc$90wz{dfb]lc~r.png "alt=" Wkiom1kzlm_cvwxgaabyoq3qxgm122.png "/>(6) Backup of th

DBA and RDBA Reprint

opc:0inc:0 exflg:0Itl Xid Uba Flag Lck SCN/FSC0x01 0x0003.011.000000f2 0x00805794.00c8.49--u-14 FSC 0x0000.0006bfdb0x02 0x0000.000.00000000 0x00000000.0000.00----0 FSC 0x0000.00000000Data_block_dump,data header at 0xed09464===============Tsiz:0x1f98hsiz:0x2epbl:0x0ed09464bdba:0x0100002076543210flag=--------Ntab=1Nrow=14Frre=-1fsbo=0x2eFseo=0x1d61Avsp=0x1d33Tosp=0x1d330xe:pti[0] nrow=14 Offs=0--The block holds 14 records. From row 0 to row 130x12:pri[

Total Pages: 11 1 .... 7 8 9 10 11 Go to: Go

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.