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• Enterprise Manager Grid Control licencelése

  - by Lajos Sárecz

  Gyakran kapok kérdéseket az Oracle Enterprise Manager Grid Control licencelésével kapcsolatban, ezért az alábbiakban igyekszem összefoglalni a legfontosabb információkat. Az alábbi ismerteto nem teljes köru, mivel számos olyan termék van (Data Masking, Real Application Testing, Real User Experience Insight, Application Testing Suite), melyek kapcsolódnak az Enterprise Manager-hez, azonban licencelésük másképp muködik. Az Enterprise Manager licenceléssel kapcsolatban az elsodleges információ forrás a Licensing Information doksi. A legfontosabb információk: - A Grid Control keretrendszer (Agent-ek és a konzol az alapfunkciókkal - lásd késobb) önmagában ingyenes, sot restricted-use licencet tartalmaz Oracle Database-re, amennyiben azt csak az Oracle Management Repository céljára használják. Fontos, hogy ez nem tartalmaz egyéb Oracle Database opciókat, mint például a RAC! Hasonlóképpen az Oracle WebLogic Server is kizárólagosan az Oracle Management Server kiszolgálására használható ingyenesen, de fürtözés nélkül. - A Grid Control alapfunkcionalitása: Discovery, Groups, Job Scheduling, Real time availability, Performance & monitoring, Target Home Pages, Administration, Console alerts - Az alapfunkcionalitás felügyelt termékektol függoen bovítheto Management Pack, Plug-in és Connector termékekkel. Alapvetoen ezek licencelése mindig a monitorozott, felügyelt termék licenceléséhez kell, hogy igazodjon. Tehát például ha 2 adatbázis szerverre szeretnénk Diagnostic Pack-ek használni, akkor mindkettore kell CPU vagy NUP (Named User Plus) licencet vásárolni, attól függoen az adatbázis maga milyen licenccel rendelkezik. Megjegyzem ezt a konkrét Management Pack-ek kizárólag Enterprise Edition Database esetén lehet alkalmazni. - Számos fizetos funkció külön telepítés nélkül is elérheto a Grid Control felületén (ugyanez igaz Database Control-ra és Fusion Middleware Control-ra is). Hogy elkerüljük a licenc sértést, érdemes ellenorízni hogy az adott környezetben mely Management Pack-ek használata került bekapcsolásra. Ezt a Grid Control Setup menüjében a Management Pack Access almenüben tehetjük meg legegyszerubben. Részleteseb leírás itt található. Database Diagnostic és Tuning Pack adatbázis szintu kikapcsolására is lehetoség van, hogy parancssorból se lehessen használni oket, errol korábban már írtam. Az egyes management termékek USD ára megtalálható az árlistában. Ha valami fontos kimaradt, várom a kérdéseket, hozzászólásokat, és igény szerint bovítem a fentieket.

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• Linux compilers for C/C++ on AMD "Bulldozer" CPUs like the Interlagos [closed]

  - by jstarek

  I am looking for a Linux compiler for C/C++ code that supports AMDs new "Bulldozer" architecture and produces efficient binaries for the Interlagos series Opterons. This seems to be a bit difficult because of the peculiarities of the Bulldozer microarchitecture. While AMD has a whitepaper with some details, I would like to see some independent analyses. The relevant paper from HeCToR focuses mostly on job placement and scheduling, which is an area we already investigate. So, who can recommend a good compiler comparison for Bulldozers running Linux? Does anyone have well-described benchmarks?

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• Google+ Platform Office Hours for June 13th, 2012

  Google+ Platform Office Hours for June 13th, 2012 Here are the show notes for this week's office hours. This week was devoted to your questions and our answers. We covered a wide breadth of topics. 0:43 - Introductions 2:54 - About Tabletop Forge's KickStarter - goo.gl 10:00 - Can I run multiple Hangout Apps at the same time? 12:28 - Is Google looking into adding more powerful Hangout moderation controls? 13:47 - How do you use Hangout Apps with Hangouts on Air? - +Fraser Cain's tips and tricks for Hangouts on Air: goo.gl 23:40 - I have an Android game. How do I port it to the Hangouts API? 27:57 - Pre-hangout Apps, Hangouts on Air pre-rolls, scheduling hangouts and other ways to help viewers find your Hangouts on Air 33:55 - How do I bookmark useful Google+ posts with Google+? 38:13 - Can you add a host ID field to the Hangouts API? When will the overlay garbage collection improve? 40:17 - Hand movement tracking as part of the Hangouts API Thanks to everyone who joined the hangout and asked questions on Google+! From: GoogleDevelopers Views: 698 18 ratings Time: 44:16 More in Science & Technology

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• How to handle editing a large file for a non-technical user

  - by Luke

  I have a client who is given a tab delimited .txt file containing hundreds of thousands of rows. I have a user story as follows: As a user I want to take the text file and add a new value at the end of each line which contains the concatenated value of two of the columns. for example if the file read text_one text_two I need to output the following (preferably to a .txt file) text_one text_two text_onetext_two My first approach was to ask the vendor supplying the file to do the concatenation before providing the file, the easiest way to solve a problem is to eliminate it right? however they are very uncooperative and have point blank refused. I've looked at building a simple javascript application that does this client side so a non-technical user could select the file using a file selector. This approach has a few problems The file could be over a GB in size and so can't be loaded straight into memory, I've tried and the browser crashes There is no means to write a file in javascript so I'd need to output the content to the screen and have the user save it (somehow) I was thinking if I could get around the filesize limitations I could just output the edited content to the page and have the user save the page as a .txt file, however I think there is a better way than using javascript that will still accommodate the users lack of technical know-how. Please consider this question to be stack agnostic, but bear in mind that a nice little shell script or python script would be deemed unsuitable for a non technical user unless there is a way of "packaging" it nicely for a non-technical user. Updates The file is too large to open in excel. The process needs to be run weekly, but it doesn't require scheduling or automation...(yet)

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• Viewpoint gem and Exchange resource account

  - by scott.simpson

  Hi- I'm trying my hand at using the Viewpoint gem (by zenchild @ github) as the base for a meeting scheduling system. It's great at reading calendar information from regular Exchange 2007 accounts, but I got stuck trying to change the SOAP request header to allow me to read resource accounts as a delegate. I came across http://blogs.msdn.com/b/mstehle/archive/2009/06/16/exchange-api-team-blog-exchange-impersonation-vs-delegate-access.aspx and it seems to be what I need, and I have the feeling I'm on the edge of getting it working, but I'm just not quite there yet as a ruby programmer. Any help would be appreciated... Thanks!

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• Strange Maintenance Plan SubPlans behaviour: each SP runs all the tasks of all other SP at odd times

  - by Wentu

  SQL Server 2005: I have a problem with scheduling a Maintenance Plan (MP) with 3 subplans (SP). SP1 is scheduled to run hourly, SP2 daily at 7.00 and SP3 on sundays at 8.00 Reading MP history I see that what happened (I know it seems crazy) is: 11: SP1 runs and executes all the tasks of SP1 SP2 and SP3 12: SP2 runs and does the same 13: SP3 runs and does the same 14: SP1 runs and does the same From the job Activity monitor, SP1 has last run time at 14, SP2 and SP3 are never been executed. All of the SP are scheduled correctly in the Job Activity Monitor (SP2 for tomorrow at 7, SP3 for next sunday at 8) Do you have any idea what is happening? Thankx a lot Wentu

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• Oracle Unified Method 5 Essentials Exam (Beta)

  - by user535886

  Oracle Unified Method 5 Essentials (1Z1-568) exam The Oracle Unified Method Certified Implementation Specialist Certification identifies professionals who are skilled in Oracle’s all inclusive methodology. The certification covers the core features the Oracle Unified Method suite, including but not limited to, Focus Areas, Use Cases, and Requirements Gathering. The certification proves a baseline of the consultant’s knowledge and allows the implementation team to work as a cohesive team from day 1. Up-to-date training and field experience are highly recommended. Target Audience: implementation consultants. We are offering to Oracle Partners & Employees beta exam vouchers to earn Oracle Implementation Specialist credential. Exam appointments will be open soon for scheduling at authorized Pearson Vue testing centers. Due to the high demand we process the requests on a first-come, first-served basis. If you would like to request a voucher, please send an e-mail to [email protected] with the following information for each participant: first and last name; business email address, company name, and exam name. 

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• Using JCal Pro and Community Builder together for registration

  - by Kate

  Does anyone know if there is a way to use JCal Pro and Community Builder together in order to have users register for a specific event? When our new website was designed JCal Pro was implemented with the idea that individuals could look at the calendar and see what events they wanted to sign up for based spots open for that specific day. Now that we have more events and scheduling has become a major issue. For another project we installed CB in order to allow individuals to register and create profiles for an annual event. As I am looking at this nightmare I am living trying to organize various groupings of people I am assuming that there has to be some sort of a way to connect the two up so that those who have a user account through CB could also go in look at the calendar and sign up for an event. There is a JCal plug-in installed in CB however I have not had much luck at figuring out its functionality. I am running: Joomla 1.5.14 JCal Pro version 2.2.7.441 Community Builder: 1.2

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• Scheduled Jobs during hours of autumn time change

  - by NealWalters

  I'm wondering how other people deal with this scenario. What if you have a job scheduled to run at 1:30 am. In the autumn, when time changes, the hour of 1:00:00 to 1:59:59 repeats itself and so that job would run twice. Could be Windows Task Scheduler, SQL Agent or any other scheduling tool. Most of these tools seem to be based on machine time, not UTC time. If I told it to run the job at UTC time each night, then I wouldn't have the duplicate hour issue.

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• Scheduled task based on Microsoft patch release cycle

  - by floyd

  I have a simple powershell script which unapproves all patches based on computer group name in WSUS which works great. All of our servers patch on a specific Day/Week/Time starting on Week0-Wednesday which would be the Wednesday after Microsoft Patch Tuesday (2nd Tuesday of every month) all the way to Week3-Sunday. This obviously causes problems as sometimes not all patches get applied in one reboot cycle, and then will install patches the following week during their group policy scheduled patching day/time which is what I'm trying to prevent. My question is I'm trying to schedule my script to run based on this schedule and I am finding it next to impossible using Windows Task Scheduler. For instance if I wanted something to always run on the 4th Monday after Microsoft Patch Tuesday, I cant always use the task scheduler option "4th Monday of the Month" Has anyone run into a similar situation, or know of any task scheduling tools which give you more flexibility than Windows Task Scheduler?

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• CLI-Based monitoring tool for KVM

  - by Pinnacle

  I am developing a scheduler for running VMs on KVM. The scheduling has over-commitment of resources like memory and CPU. For this, I need a CLI-based monitoring tool that keeps me giving information about the resource usage of each VM, because it might be the case that due to over-provisioning of resources, VMs on a particular host are running very slowly depending on the benchmarks/programs each VM is running, and then I need to migrate a VM to another host and so on. I looked into libvirt-based tools like collects, MUNIN, Nagios-vert, etc.( http://libvirt.org/apps.html#monitoring ) I also looked into Ubuntu utility perf-kvm ( http://manpages.ubuntu.com/manpages/maverick/man1/perf-kvm.1.html ) I want to ask which CLI-based would be recommended by the community so that I can make a automated scheduler that takes care of the above situation.

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• WIF-less claim extraction from ACS: JWT

  - by Elton Stoneman

  ACS support for JWT still shows as "beta", but it meets the spec and it works nicely, so it's becoming the preferred option as SWT is losing favour. (Note that currently ACS doesn’t support JWT encryption, if you want encrypted tokens you need to go SAML). In my last post I covered pulling claims from an ACS token without WIF, using the SWT format. The JWT format is a little more complex, but you can still inspect claims just with string manipulation. The incoming token from ACS is still presented in the BinarySecurityToken element of the XML payload, with a TokenType of urn:ietf:params:oauth:token-type:jwt: <t:RequestSecurityTokenResponse xmlns:t="http://schemas.xmlsoap.org/ws/2005/02/trust">   <t:Lifetime>     <wsu:Created xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">2012-08-31T07:39:55.337Z</wsu:Created>     <wsu:Expires xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">2012-08-31T09:19:55.337Z</wsu:Expires>   </t:Lifetime>   <wsp:AppliesTo xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy">     <EndpointReference xmlns="http://www.w3.org/2005/08/addressing">       <Address>http://localhost/x.y.z</Address>     </EndpointReference>   </wsp:AppliesTo>   <t:RequestedSecurityToken>     <wsse:BinarySecurityToken wsu:Id="_1eeb5cf4-b40b-40f2-89e0-a3343f6bd985-6A15D1EED0CDB0D8FA48C7D566232154" ValueType="urn:ietf:params:oauth:token-type:jwt" EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">[ base64string ] </wsse:BinarySecurityToken>   </t:RequestedSecurityToken>   <t:TokenType>urn:ietf:params:oauth:token-type:jwt</t:TokenType>   <t:RequestType>http://schemas.xmlsoap.org/ws/2005/02/trust/Issue</t:RequestType>   <t:KeyType>http://schemas.xmlsoap.org/ws/2005/05/identity/NoProofKey</t:KeyType> </t:RequestSecurityTokenResponse> The token as a whole needs to be base-64 decoded. The decoded value contains a header, payload and signature, dot-separated; the parts are also base-64, but they need to be decoded using a no-padding algorithm (implementation and more details in this MSDN article on validating an Exchange 2013 identity token). The values are then in JSON; the header contains the token type and the hashing algorithm: "{"typ":"JWT","alg":"HS256"}" The payload contains the same data as in the SWT, but JSON rather than querystring format: {"aud":"http://localhost/x.y.z" "iss":"https://adfstest-bhw.accesscontrol.windows.net/" "nbf":1346398795 "exp":1346404795 "http://schemas.microsoft.com/ws/2008/06/identity/claims/authenticationinstant":"2012-08-31T07:39:53.652Z" "http://schemas.microsoft.com/ws/2008/06/identity/claims/authenticationmethod":"http://schemas.microsoft.com/ws/2008/06/identity/authenticationmethod/windows" "http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname":"xyz" "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress":"[email protected]" "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn":"[email protected]" "identityprovider":"http://fs.svc.x.y.z.com/adfs/services/trust"} The signature is in the third part of the token. Unlike SWT which is fixed to HMAC-SHA-256, JWT can support other protocols (the one in use is specified as the "alg" value in the header). How to: Validate an Exchange 2013 identity token contains an implementation of a JWT parser and validator; apart from the custom base-64 decoding part, it’s very similar to SWT extraction. I've wrapped the basic SWT and JWT in a ClaimInspector.aspx page on gitHub here: SWT and JWT claim inspector. You can drop it into any ASP.Net site and set the URL to be your redirect page in ACS. Swap ACS to issue SWT or JWT, and using the same page you can inspect the claims that come out.

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• methods DSA_do_verify and SHA1 (OpenSSL library for Windows)

  - by Rei

  i am working on a program to authenticate an ENC signature file by using OpenSSL for windows, and specifically methods DSA_do_verify(...) and SHA1(...) hash algorithm, but is having problems as the result from DSA_do_verify is always 0 (invalid). I am using the signature file of test set 4B from the IHO S-63 Data Protection Scheme, and also the SA public key (downloadable from IHO) for verification. Below is my program, can anyone help to see where i have gone wrong as i have tried many ways but failed to get the verification to be valid, thanks.. The signature file from test set 4B // Signature part R: 3F14 52CD AEC5 05B6 241A 02C7 614A D149 E7D6 C408. // Signature part S: 44BB A3DB 8C46 8D11 B6DB 23BE 1A79 55E6 B083 7429. // Signature part R: 93F5 EF86 1FF6 BA6F 1C2B B9BB 7F36 0C80 2F9B 2414. // Signature part S: 4877 8130 12B4 50D8 3688 B52C 7A84 8E26 D442 8B6E. // BIG p C16C BAD3 4D47 5EC5 3966 95D6 94BC 8BC4 7E59 8E23 B5A9 D7C5 CEC8 2D65 B682 7D44 E953 7848 4730 C0BF F1F4 CB56 F47C 6E51 054B E892 00F3 0D43 DC4F EF96 24D4 665B. // BIG q B7B8 10B5 8C09 34F6 4287 8F36 0B96 D7CC 26B5 3E4D. // BIG g 4C53 C726 BDBF BBA6 549D 7E73 1939 C6C9 3A86 9A27 C5DB 17BA 3CAC 589D 7B3E 003F A735 F290 CFD0 7A3E F10F 3515 5F1A 2EF7 0335 AF7B 6A52 11A1 1035 18FB A44E 9718. // BIG y 15F8 A502 11C2 34BB DF19 B3CD 25D1 4413 F03D CF38 6FFC 7357 BCEE 59E4 EBFD B641 6726 5E5F 0682 47D4 B50B 3B86 7A85 FB4D 6E01 8329 A993 C36C FD9A BFB6 ED6D 29E0. dataServer_pkeyfile.txt (extracted from above) // BIG p C16C BAD3 4D47 5EC5 3966 95D6 94BC 8BC4 7E59 8E23 B5A9 D7C5 CEC8 2D65 B682 7D44 E953 7848 4730 C0BF F1F4 CB56 F47C 6E51 054B E892 00F3 0D43 DC4F EF96 24D4 665B. // BIG q B7B8 10B5 8C09 34F6 4287 8F36 0B96 D7CC 26B5 3E4D. // BIG g 4C53 C726 BDBF BBA6 549D 7E73 1939 C6C9 3A86 9A27 C5DB 17BA 3CAC 589D 7B3E 003F A735 F290 CFD0 7A3E F10F 3515 5F1A 2EF7 0335 AF7B 6A52 11A1 1035 18FB A44E 9718. // BIG y 15F8 A502 11C2 34BB DF19 B3CD 25D1 4413 F03D CF38 6FFC 7357 BCEE 59E4 EBFD B641 6726 5E5F 0682 47D4 B50B 3B86 7A85 FB4D 6E01 8329 A993 C36C FD9A BFB6 ED6D 29E0. Program abstract: QbyteArray pk_data; QFile pk_file("./dataServer_pkeyfile.txt"); if (pk_file.open(QIODevice::Text | QIODevice::ReadOnly)) { pk_data.append(pk_file.readAll()); } pk_file.close(); unsigned char ptr_sha_hashed[20]; unsigned char *ptr_pk_data = (unsigned char *)pk_data.data(); // openssl SHA1 hashing algorithm SHA1(ptr_pk_data, pk_data.length(), ptr_sha_hashed); DSA_SIG *dsasig = DSA_SIG_new(); char ptr_r[] = "93F5EF861FF6BA6F1C2BB9BB7F360C802F9B2414"; //from tset 4B char ptr_s[] = "4877813012B450D83688B52C7A848E26D4428B6E"; //from tset 4B if (BN_hex2bn(&dsasig->r, ptr_r) == 0) return 0; if (BN_hex2bn(&dsasig->s, ptr_s) == 0) return 0; DSA *dsakeys = DSA_new(); //the following values are from the SA public key char ptr_p[] = "FCA682CE8E12CABA26EFCCF7110E526DB078B05EDECBCD1EB4A208F3AE1617AE01F35B91A47E6DF63413C5E12ED0899BCD132ACD50D99151BDC43EE737592E17"; char ptr_q[] = "962EDDCC369CBA8EBB260EE6B6A126D9346E38C5"; char ptr_g[] = "678471B27A9CF44EE91A49C5147DB1A9AAF244F05A434D6486931D2D14271B9E35030B71FD73DA179069B32E2935630E1C2062354D0DA20A6C416E50BE794CA4"; char ptr_y[] = "963F14E32BA5372928F24F15B0730C49D31B28E5C7641002564DB95995B15CF8800ED54E354867B82BB9597B158269E079F0C4F4926B17761CC89EB77C9B7EF8"; if (BN_hex2bn(&dsakeys->p, ptr_p) == 0) return 0; if (BN_hex2bn(&dsakeys->q, ptr_q) == 0) return 0; if (BN_hex2bn(&dsakeys->g, ptr_g) == 0) return 0; if (BN_hex2bn(&dsakeys->pub_key, ptr_y) == 0) return 0; int result; //valid = 1, invalid = 0, error = -1 result = DSA_do_verify(ptr_sha_hashed, 20, dsasig, dsakeys); //result is 0 (invalid)

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• Simple dependency tree diagram generator

  - by foampile

  I have a need to produce a simple dependency tree diagram. The input data would be in the following simple format: ITEM_NAME DEPENDENCY ---------------------------- ITEM_101 ITEM_75 ITEM_102 ITEM_77 ITEM_102 ITEM_61 ITEM_102 ITEM_11 This means that ITEM_101 depends on ITEM_75 and ITEM_102 depends on items ITEM_77, ITEM_61 and ITEM_11. So the diagram would have items ITEM_77, ITEM_61 and ITEM_11 in one vertical level and ITEM_102 would be below it with a line connecting each of the three dependencies to ITEM_102. The same would be for ITEM_101, ITEM_75 would be somewhere above it and there would be a line connecting it. In the real world this tree represents a hierarchy of scheduling jobs. We have a very extensive workload automation hierarchy in Autosys and I have heard that its front end utility has something like this tree visual representation, however, for some reason, that utility has been disabled by admins. My business users want to see this hierarchy in an easy-to-consume format. I was hoping that I won't have to program something like this from scratch because it seems like quite a common reporting requirement and the input data is simply formatted. My question is: is there a FOSS tool that takes standardized data input and produces such a hierarchical tree? Thanks

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• How to schedule time-of-day upgrades

  - by Richard

  Hello, I'm responsible for about 30 Ubuntu computers at a private K-8 school. We have only a 3Mbps internet connection serving the entire campus, and I would like to ensure that updates are done in the middle of the night - so that daytime tasks are not slowed down. I'm using Ubuntu 10.04, and have set all computers to download and install security updates via the update manager. I have also installed cron-apt, and modified the config file to stagger the start times of the upgrades from about 10pm to 4am local time. HOWEVER - this morning I arrived at the school at 7:30am and all the computers were busy downloading a large security based update. Needless to say, all internet activity was slowed to a crawl (for the next 2 hours), and the computer users were very very upset. This was the event I'm trying so hard to prevent. It seems that my scheme to ensure middle of the night downloads failed, and I'm not sure why. I've also tried some schemes using unattended-upgrades & crontab, but there always seemed to be something scheduling upgrades to occur in addition to the ones I try to force at middle of the night. Is there a sure fire way to absolutely positively guarantee that updates will occur only at one specific time? It would be nice if the update manager just had a drop down menu to specify a designated time. Thanks in advance for any help you can give me.

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• How should I architect a personal schedule manager that runs 24/7?

  - by Crawford Comeaux

  I've developed an ADHD management system for myself that's attempting to change multiple habits at once. I know this is counter to conventional wisdom, but I've tried the conventional for years & am now trying it my way. (just wanted to say that to try and prevent it from distracting people from the actual question) Anyway, I'd like to write something to run on a remote server that monitors me, helps me build/avoid certain habits, etc. What this amounts to is a system that: runs 24/7 may have multiple independent tasks to run at once may have tasks that require other tasks to run first lets tasks be scheduled by specific time, recurrence (ie. "run every 5 mins"), or interval (ie. "run from 2pm to 3pm") My first naive attempt at this was just a single PHP script scheduled to run every minute by cron (language was chosen in order to use a certain library, but no longer necessary). The logic behind when to run this or that portion of code got hairy pretty quick. So my question is how should I approach this from here? I'm not tied to any one language, though I'm partial to python/javascript. Thoughts: Could be done as a set of scripts that include a scheduling mechanism with one script per bit of logic...but the idea just feels wrong to me. Building it as a daemon could be helpful, but still unsure what to do about dozens of if-else statements for detecting the current time

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• Do I need to disable access to a publisher database when setting up SQL Server 2000 Transactional Re

  - by Kev

  I have a production database i.e. where there are constant updates and I've configured this to be published to another server using Transactional Replication. When I configure transactional replication I've been doing the following: disable access to the source database backup source DB then restore to subscription server configure replication re-enable DB access to our apps The problem with this approach is scheduling in downtime, having to suspend all the various timed scheduled tasks we run and shutting down access to our various applications that are dependant on this database. Can I just configure transactional replication without disabling access to the publishing database and the subscriber database will correctly catch up? i.e. are all the DML statements queued on the publisher and as soon as the subscriber is ready they are picked off and executed?

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• Load Testing Linux Virtual Server

  - by Anubhav Agarwal

  I have configured a Linux virtual network with following configuration 172.17.6.112- VIP 172.17.6.111- Linux Director | |----------172.17.6.113 --- Real Server 1 |----------172.17.6.114 --- Real Server 2 I am using direct routing technique. I am unable to test my LVS network. Are there some good scripts/softwares available for load testing. I am running apache2.0 service on them. I came across with testlvs on the internet but am unable to understand its documentation. Are there more simpler ones I want to test the response time of server using various scheduling algorithms .

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• TORQUE: Find out why the job is queued?

  - by ahmad

  Under TORQUE-MAUI job scheduling system, there are several reasons to have a job stayed in Q state. Those that I know are: There are not enough resource to run the Queued job. The user is not allowed to have further running jobs. The user is not allowed to have further computation cores. Is there any other reason to have the queued job? Further information: I am asking the question because I have couple of queued jobs while some nodes are free, pbs_mom is on on them, and mauid limitations are generously large. Thanks in advance.

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• An observation on .NET loops – foreach, for, while, do-while

  It’s very common that .NET programmers use “foreach” loop for iterating through collections. Following is my observation whilst I was testing simple scenario on loops. “for” loop is 30% faster than “foreach” and “while” loop is 50% faster than “foreach”. “do-while” is bit faster than “while”. Someone may feel that how does it make difference if I’m iterating only 1000 times in a loop. This test case is only for simple iteration. According to the "Data structure" concepts, best and worst cases are completely based on the data we provide to the algorithm. so we can not conclude that a "foreach" algorithm is not good. All I want to tell that we need to be little cautious even choosing the loops. Example:- You might want to chose quick sort when you want to sort more numbers. At the same time bubble sort may be effective than quick sort when you want to sort less numbers. Take a simple scenario, a request of a simple web application fetches the data of 10000 (10K) rows and iterating them for some business logic. Think, this application is being accessed by 1000 (1K) people simultaneously. In this simple scenario you are ending up with 10000000 (10Million or 1 Crore) iterations. below is the test scenario with simple console application to test 100 Million records. using System;using System.Collections.Generic;using System.Diagnostics;namespace ConsoleApplication1{ class Program { static void Main(string[] args) { var sw = new Stopwatch(); var numbers = GetSomeNumbers(); sw.Start(); foreach (var item in numbers) { } sw.Stop(); Console.WriteLine( String.Format("\"foreach\" took {0} milliseconds", sw.ElapsedMilliseconds)); sw.Reset(); sw.Start(); for (int i = 0; i < numbers.Count; i++) { } sw.Stop(); Console.WriteLine( String.Format("\"for\" loop took {0} milliseconds", sw.ElapsedMilliseconds)); sw.Reset(); sw.Start(); var it = 0; while (it++ < numbers.Count) { } sw.Stop(); Console.WriteLine( String.Format("\"while\" loop took {0} milliseconds", sw.ElapsedMilliseconds)); sw.Reset(); sw.Start(); var it2 = 0; do { } while (it2++ < numbers.Count); sw.Stop(); Console.WriteLine( String.Format("\"do-while\" loop took {0} milliseconds", sw.ElapsedMilliseconds)); } #region Get me 10Crore (100 Million) numbers private static List<int> GetSomeNumbers() { var lstNumbers = new List<int>(); var count = 100000000; for (var i = 1; i <= count; i++) { lstNumbers.Add(i); } return lstNumbers; } #endregion Get me some numbers }} In above example, I was just iterating through 100 Million numbers. You can see the time to execute various  loops provided in .NET Output "foreach" took 1108 milliseconds "for" loop took 727 milliseconds "while" loop took 596 milliseconds "do-while" loop took 594 milliseconds   Press any key to continue . . . So I feel we need to be careful while choosing the looping strategy. Please comment your thoughts. span.fullpost {display:none;}

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• Xen Disk Performence Issues

  - by user98651

  I'm currently using Xen PV on CentOS 5 with my domU's as flat files running on a hardware RAID controlled (write cache enabled) formatted with XFS. On the dom0 I can get about 500MB/s in a 2GB dd write from /dev/zero however on the domU's I'm lucky if I get 10MB/s (it is usually around half that). I've tried changing the disk scheduling to NOOP on the domU's, changed some mount parameters and tweaked the performance allocations of both the dom0 (prioritize CPU) and domU's (increase RAM and VCPU allocations). None of these steps have produced any noticeable change in performance. My instinct here is that it is not a hardware problem, due to the solid performance of the dom0. Any ideas on what might be causing this problem? I'm considering moving to LVM based domU's.

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• How to determine the source for wakeup in hibernate

  - by Erik

  I have a big problem with my home theater PC that runs Windows 7 64Bit. Normally, I send that PC to hibernate every evening, but from time to time, it keeps waking up for no obvious reason, and stays on until I realize, which is sometimes half a day later :( I have already checked for Windows update, which is not set to automatical, since I prefer installing updates manually. When I look in the system event log, there is an entry called "Power Troubleshooter" which tells me that my system was reactivated at a specific time, but it also says: Source = Unknown, which is the most annoying part. So how can I actually figure out, which process reactivates the PC? Is it possible to set a group policy which forbidds applications or services from scheduling tasks that allow waking up from hibernate at all?

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• EDQ Technical Enablement for OPN (Prague - June 17-19)

  - by milomir.vojvodic

  Oracle Enterprise Data Quality (EDQ) Technical Enablement and Partner Training Trusted Data for Your Enterprise Applications Oracle Enterprise Data Quality helps organizations achieve maximum value from their business-critical applications by delivering fit-for-purpose data. These products also enable individuals and collaborative teams to quickly and easily identify and resolve any problems in underlying data. With Oracle Enterprise Data Quality, customers can identify new opportunities, improve operational efficiency, and more efficiently comply with industry or governmental regulation. Oracle Enterprise Data Quality is designed to serve as a very channel friendly platform to OPN.  This means that pre-built extensions, components and even complete business solutions can readily be built and shared.  This allows our customers/partners to be highly efficient in how they deploy custom business solutions, but also allows our partners to develop specialized components, domain knowledge and even complete business solutions. Training is suitable for: · Database administrators · Architects · Technical staff Objectives of the training: After completing this course, participants should: · Have an understanding of the core functionality of EDQ across profiling, auditing, transforming, parsing and matching data · Be able to describe some of the key capabilities and benefits delivered by EDQ · Be able to create and run standalone EDQ processes and jobs · Be ready to start working with data from customers and (with practice) be able to demonstrate EDQ to customers Agenda 17th June Fundamentals For Demoing (Profile, Audit, Transform and More) Profiling Auditing Transforming Writing and exporting data Jobs and scheduling Publishing, packaging and copying EDQ processes Introduction to the Customer Data Extension Pack Realtime Processing via Web Services The Server Console Run Profiles Data Interfaces Sampling Publishing metrics to the Dashboard Users and security 18th June Matching Matching overview Basic matching configuration Matching rule hierarchies Clustering Merging Reviewing possible matches Outputting Match Data Case study 19th June Address Verification Address Verification Overview Configuration Accuracy Flags Parsing Parsing Overview Phrase profiling Tailoring a CDEP Parser Base Tokenization Classification Reclassification Selection Resolution Register Here Don’t miss this FREE event. Space is limited. Oracle University V Parku 2294/4 148 00 Praha 4 17.6. – 19.6. 2014 09:00 a.m.– 17:30 p.m.

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• How to take mysql replication backup

  - by user53864

  I have a MySQL master-master replication setup with a slave for each master(only one master used for read/writes at a time) on Ubuntu server. Wondering what would be the best way to schedule backup of replication databases with mysqldump. I have following clarifications because of which could not proceed further. Scheduling mysqldump backup on masters safe for replication? Connecting masters with GUI applications(workbench) for database manipulations(read, writes.. by developers) is safe? Any inputs are welcome.

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• Turn O&M Operations into Optimized Projects with Oracle Primavera

  - by mark.kromer

  Oracle enterprise project portfolio management with Primavera is much more than optimizing project performance and eliminating project failure on new projects, capital programs, etc. A very common use case that we see is small-scale frequent and recurring projects based on on-going operations and maintenance. As opposed to assigning resources to various activities when you are building a new network infrastructure, for example, Oracle has teamed-up the Primavera and eBusiness Suite teams to provide direct integration for work orders from Oracle's Enterprise Asset Management (eAM) system to populate into Primavera P6 project schedules. So now that your network infrastructure build-out project is complete, planners and operations managers can use the world-class what-if and scheduling capabilities in Primavera tools to assign work orders, maximize resource utilization and to reuse templates for typical O&M operations in Primavera and share that back to the operations teams using eAM for maintenance. Also, large-scale maintenance operations related to large assets in the asset lifecycle will include phase-outs, shutdowns and turn-arounds which are classic maintenance projects, as opposed to building something new, that Oracle Primavera with Oracle e-Business Suite provides full coverage to optimize your ALM processes in your business. Read more about these new capabilities from Oracle in the ERP space from the Oracle eAM data sheet.

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