2 reusing online redo log files

Maintaining Online Redo Log Files ppt

Maintaining Online Redo Log Files ppt

... purpose of online redo log files • Outline the structure of online redo log files • Control log switches and checkpoints • Multiplex and maintain online redo log files • Manage online redo logs files ... the use of online redo log files • Obtain online redo log file information • Control log switches and checkpoints • Multiplex and maintain online redo log files • Manage online redo log files with ... Disk Disk How Online Redo Log Files Work • Online Redo log files are used in a cyclic fashion • When a online redo log file is full, LGWR will move to the next log group – Called a log switch –...

Ngày tải lên: 23/03/2014, 00:20

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Quản lý redo log files

Quản lý redo log files

... s online redo log files lưu tr redo records có redo log buffer Online redo log file ó tr ng thái s n sàng cho vi c ghi d li u, c g i current online redo log file Các online redo log files c n ... Các redo records có th c ghi vào online redo log file trư c transaction tương ng c commit Khi redo log buffer y, ho c transaction commit, LGWR s y t t c redo log entries redo log buffer online redo ... kh i t o LOG_ CHECKPOINTS_TO_ALERT c t TRUE Và ngư c l i v i giá tr FALSE 8.3.LÊN K HO CH S 8.3.1 Xác D NG REDO LOG FILES nh s lư ng Online redo log files xác nh s lư ng online redo log files s...

Ngày tải lên: 09/10/2013, 13:20

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Giáo trình: Lý thuyết thông tin.H(X) = H(p1 , p 2 ,..., p M ) = −∑ pi log 2 ( pi )i ppsx

Giáo trình: Lý thuyết thông tin.H(X) = H(p1 , p 2 ,..., p M ) = −∑ pi log 2 ( pi )i ppsx

... phân phối Entropy X sau : 1 ⎞ 1 1 1 1 ⎛ H (X ) = H ⎜ , ,L , loglog , , − log = −M log ⎟ = − M ⎠ m M M M M M M M ⎝M M => H(X) = − log = log M hàm đơn điệu tăng M Minh họa tính chất 2: Trong trường ... lnx = log2 x / log2 e M (2) M i =1 (1) i =1 Từ (1) (2), ta có − ∑ p i log pi ≤ −∑ p i logq i (đẳng thức xảy qi=pi.) Chứng minh định lý: Đặt qi , ∀i M Từ bổ đề, ta có: M M i =1 i =1 − ∑ p i log pi ... xi ) log p ( xi ) = −∑∑ p ( xi , y j ) log p ( xi ) L M L H (Y ) = −∑ p ( y j ) log p ( y j ) = −∑∑ p ( xi , y j ) log p ( y j ) j =1 i =1 j =1 M L ⇒ H ( X ) + H (Y ) = −∑∑ p ( xi , y j )[log...

Ngày tải lên: 13/08/2014, 06:22

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Removing Large Files and Log Rolling

Removing Large Files and Log Rolling

... Jun 18:21 37l5152 .log -rw-rw-r rbpeters rbpeters 449184 Jun 18:21 770tref .log -rw-rw-r rbpeters rbpeters Jun 21:25 really_big .log This procedure can be used to rotate log files For example, ... If it does exist, execution continues CHAPTER 40 ■ REMOVING LARGE FILES AND LOG ROLLING #!/bin/sh LOGFILE=./my .log if [ ! -f $LOGFILE ] then echo "Nothing to exiting." else You’ve already seen ... 37l5152 .log -rw-rw-r rbpeters rbpeters 449184 Jun 18:21 770tref .log -rw-rw-r rbpeters rbpeters 1104249096 Jun 21:22 really_big .log The following command is one, cp /dev/null really_big .log is...

Ngày tải lên: 05/10/2013, 08:51

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The JSP Files (Part 2) - Attack of the Killer Fortune Cookies

The JSP Files (Part 2) - Attack of the Killer Fortune Cookies

... The JSP Files (part 2): Attack Of The Killer Fortune Cookies Table of Contents Overdrive ... + (alpha % beta) + ""); %> And here's the output: Adding It All Up The JSP Files (part 2): Attack Of The Killer Fortune Cookies The The The The The sum of 25 and is 30 difference ... false The following table should make this clearer Assume x=4 and y=10 Adding It All Up The JSP Files (part 2): Attack Of The Killer Fortune Cookies Operator == != > < >=

Ngày tải lên: 19/10/2013, 02:15

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Tài liệu Lab 5.2.3 Managing Configuration Files with TFTP pptx

Tài liệu Lab 5.2.3 Managing Configuration Files with TFTP pptx

... Default gateway 192.168.14.2 255.255.255.0 192.168.14.1 Step Login to the router in user mode a Connect to the Gadsden router and login Step Starting and configuring the Cisco TFTP Server a Check ... (18528 bytes/sec) Step Verify the transfer to the TFTP server a Check the TFTP server log file Click View > Log File The output should be similar to the following: Mon Sep 16 14:10:08 2002: Receiving ... Router#erase startup-config The responding line prompt will be: Erasing the nvram filesystem will remove all files! Continue? [confirm] Press Enter to confirm The response should be: Erase of...

Ngày tải lên: 11/12/2013, 14:15

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Tài liệu Lab 5.2.6 Managing Configuration Files with TFTP docx

Tài liệu Lab 5.2.6 Managing Configuration Files with TFTP docx

... Default gateway 192.168.14.2 255.255.255.0 192.168.14.1 Step Login to the router in user mode a Connect to the Gadsden router and login Step Starting and configuring the Cisco TFTP Server a Check ... (18528 bytes/sec) Step Verify the transfer to the TFTP server a Check the TFTP server log file Click View > Log File The output should be similar to the following: Mon Sep 16 14:10:08 2002: Receiving ... Router#erase startup-config The responding line prompt will be: Erasing the nvram filesystem will remove all files! Continue? [confirm] Press Enter to confirm The response should be: Erase of...

Ngày tải lên: 21/12/2013, 19:15

5 435 0
Tài liệu Lab 6.2.7a Managing Switch Operating System Files pptx

Tài liệu Lab 6.2.7a Managing Switch Operating System Files pptx

... the transfer to the TFTP server a Verify the transfer by checking the TFTP server log file by clicking View >Log File The output should look similar to the following output: Mon Sep 16 14:10:08 ... Switch#erase startup-config The responding line prompt will be: Erasing the nvram filesystem will remove all files! Continue? [confirm] Press Enter to confirm The response should be: Erase of ... directory It should be similar to the following, unless the default directories were changed C:\Program Files\ Cisco Systems\Cisco TFTP Server c Locate this directory using the File Manager and look at...

Ngày tải lên: 24/01/2014, 19:20

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Tài liệu Lab 6.2.7b Managing Switch Startup Configuration Files docx

Tài liệu Lab 6.2.7b Managing Switch Startup Configuration Files docx

... the transfer to the TFTP server a Verify the transfer by checking the TFTP server log file by clicking View >Log File The output should look similar to the following: Mon Sep 16 14:10:08 2002: ... Switch#erase startup-config The responding line prompt will be: Erasing the nvram filesystem will remove all files! Continue? [confirm] Press Enter to confirm The response should be: Erase of ... output should be similar to the following, unless the default directories were changed: C:\Program Files\ Cisco Systems\Cisco TFTP Server c Locate this directory using the File Manager and look at...

Ngày tải lên: 24/01/2014, 19:20

5 306 0
Tài liệu Log hệ thống - Phần 2 (Event Viewer) pdf

Tài liệu Log hệ thống - Phần 2 (Event Viewer) pdf

... bạn nên logoff restart lại máy thông tin chỉnh group policy chất chỉnh thông số registry Giờ logoff login vào thấy ghi lại security log Hình 4: xem lại event logon vào hệ thống user Sau logon vào ... trình login vào hệ thống, truy cập liệu Hình 3: thiết lập audit group policy Trong thiết lập thiết lập giám sát trình truy cập login log- off hệ thống Nếu với thiết lập toàn người dùng logon hay logoff ... 8:10:06PM Vậy ý nghĩa việc xem lại log gì: bạn tưởng tượng liệu máy bạn bị log ghi lại xoá lúc 12h đêm bạn cần quy trách nhiệm cho ai, bạn cần biết thời điểm online logon, logoff thời gian Thiết lập...

Ngày tải lên: 25/01/2014, 14:20

9 626 11
Tài liệu UNIT 5. ONLINE FACILITATION LESSON 2. FACE-TO-FACE AND ONLINE FACILITATIONNOTE docx

Tài liệu UNIT 5. ONLINE FACILITATION LESSON 2. FACE-TO-FACE AND ONLINE FACILITATIONNOTE docx

... be enthusiastic and motivate participants Online Facilitation - Face-to-face and Online Facilitation - page Online facilitation challenges ONLINE TECHNOLOGY The facilitator's task is to liaise ... communicate meaning Online Facilitation - Face-to-face and Online Facilitation - page Online and offline groups In your opinion, how the following aspects relate to face-to-face and online groups? ... (“network etiquette”) guidelines for acceptable behaviour in online communities Online Facilitation - Face-to-face and Online Facilitation - page Online and offline facilitation tasks Some aspects of...

Ngày tải lên: 22/02/2014, 01:20

11 517 1
Tài liệu UNIT 1. ONLINE COMMUNITIES: A NEW OPPORTUNITY LESSON 2. ONLINE COMMUNITIES FOR DEVELOPMENTNOTE ppt

Tài liệu UNIT 1. ONLINE COMMUNITIES: A NEW OPPORTUNITY LESSON 2. ONLINE COMMUNITIES FOR DEVELOPMENTNOTE ppt

... choice (2 or more) and press Check Answer Online Communities - a new opportunity - Online Communities for development - page Why are online communities useful? Online communities bring us access to ... and press “Check Answer” Online Communities - a new opportunity - Online Communities for development - page Using online communities for development work How we use our online communities for development? ... online community Using online communities for development work Here are some things to consider when using online communities for development: • •How you can contribute as well as gain from online...

Ngày tải lên: 22/02/2014, 01:20

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Tài liệu Xây dựng chiến dịch online marketing - Phần 2 docx

Tài liệu Xây dựng chiến dịch online marketing - Phần 2 docx

... dụng microsite biến thành công cụ thực hiệu chi phí đầu tư? Đó toán mà nhà xây dựng chiến dịch online marketing tìm lời giải Theo bà Nguyễn Phương Dung, Giám đốc Điều hành Công ty Innity, doanh ... miền hoàn toàn tỏ phù hợp  Để xây dựng khai thác microsite hiệu quả, nhà hoạch định chiến dịch online marketing phải trọng từ khâu hình thành ý tưởng, kết hợp với ứng dụng Internet cách khéo...

Ngày tải lên: 22/02/2014, 16:20

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UNIT 2. UNDERSTANDING NEEDS AND ASSESSING OPPORTUNITIES LESSON 4. SKILLS AND RESOURCES FOR AN ONLINE COMMUNITY doc

UNIT 2. UNDERSTANDING NEEDS AND ASSESSING OPPORTUNITIES LESSON 4. SKILLS AND RESOURCES FOR AN ONLINE COMMUNITY doc

... studies or simply logging on to an online community Web site to post a question for others to answer Understanding Needs and Assessing Opportunities - Skills and resources for an online community ... Opportunities - Skills and resources for an online community - page The total cost of use Software • Purchasing of software tools for e-mail management, blogs and other online community functionality you ... bring sites online • Wireless tools • Internet connectivity Any online community relies on the Internet as the backbone of information sharing and communications Whoever hosts the online community...

Ngày tải lên: 08/03/2014, 20:20

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Đề tài " (log t)2/3 law of the two dimensional asymmetric simple exclusion process " pdf

Đề tài " (log t)2/3 law of the two dimensional asymmetric simple exclusion process " pdf

... C| log log λ|2N +4 U2 ,τ ]−1 w ≥ | log log λ|−2N −4 | log λ|κ1 κ Therefore, we have the lower bound w, D2 + A∗ D3 + · · · + ≥ | log λ|2/3 exp − −1 A+ −1 w | log log λ| − (2N + 4)| log log log ... than | log λ|−2τ /2 (4.26) C ≥C 2(a2 | log a2 |κ +b2 ) dq (λ + q)−1 | log( λ + q)|−κ/2 log( λ + 2a2 | log a2 |κ + 2b2 ) 1−κ/2 − 2τ log | log λ| + log 1−κ/2 Since a2 + b2 ≤ | log λ|−4τ we have log( λ ... have log( λ + 2a2 | log a2 |κ + 2b2 )−1 ≥ (7τ /2)| log log λ| (4.27) Therefore, we have the bound log( λ + 2a2 | log a2 |κ + 2b2 ) 1−κ/2 − 2τ log | log λ| + log 1−κ/2 ≥(1/20) log( λ + a2 + b2 )|1−κ/2...

Ngày tải lên: 22/03/2014, 16:20

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CAS Online Course 2, Second Edition Insurance Accounting, Coverage Analysis, Insurance Law, and Insurance Regulation doc

CAS Online Course 2, Second Edition Insurance Accounting, Coverage Analysis, Insurance Law, and Insurance Regulation doc

... underwriting cycle  Insurers’ decision making regarding where to operate Study Materials for CAS Online Course The online course itself contains learning objectives and all the educational material to meet ... extension 6000; e-mail:CustomerService@TheInstitutes.org; Web page for CAS Online Courses: www.aicpcu.org/cas.htm CAS Online Course 2, 2nd Edition C2-13 Exam Results Candidates taking this computer-based ... policy is determined Insurance to Value Property Valuation Methods Valuation of Liability Claims CAS Online Course 2, 2nd Edition C2-4 Reasons for Property Deductibles Liability Deductibles and Self-Insured...

Ngày tải lên: 23/03/2014, 00:20

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DREAWEAVER 8 - Panel files 2 ppt

DREAWEAVER 8 - Panel files 2 ppt

... hiển thị HT “Are you Sure ?” hOặc HT Update Files II.ĐẶT VÀ NHẬN CÁC FILES :   Bạn chép File Folder chọn ( Hoặc toàn ) Site Cục Bộ Site Từ xa Panel Files ( Giống giao diện CUTE FTP ) Chọn Mục ... đích liên kết Dreamweaver đề nghị cập nhật Trang liên kết với File mà bạn di chuyển Ra HT Update Files > Nhấp Update 3.Đổi tên File Folder : Chọn File Folder Nhấp lên tên khung trắng > Nhập tên ... Vùng File Chọn File Folder mà bạn muốn di chuyển Nhấp Nút GET File PUT File Thanh Công Cụ Panel Files Nếu File bạn chuyển mở có thay đổi chưa lưu Dreamweaver hỏi bạn có muốn lưu File trước gởi...

Ngày tải lên: 23/03/2014, 02:20

3 175 0
The 2 Edition Encyclopedia of Free Online Advertising docx

The 2 Edition Encyclopedia of Free Online Advertising docx

... This is by no means the only blog online that will let you post for free So, a big bloggin’ operation or simply small blog hit n’ run jobs; It’s up to you how to use weblogs They are extremely flexible ... Blogger.com, Googlebot has paid a lot of attention to what’s happening in “the Blogosphere.” Search engines still love to spider Blog content more often than other types of websites, since blogs ... going to Blogger’s search at: http://search.blogger.com, to a great tech head’s site called Technorati: http://technorati.com, or directly to Google’s whole web Blog Search at: http://blogsearch.google.com...

Ngày tải lên: 28/03/2014, 19:20

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