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  • How do you make a precise countdown timer using clock_gettime? [migrated]

    - by Joshun
    Could somebody please explain how to make a countdown timer using clock_gettime, under Linux. I know you can use the clock() function to get cpu time, and multiply it by CLOCKS_PER_SEC to get actual time, but I'm told the clock() function is not well suited for this. So far I have attempted this (a billion is to pause for one second) #include <stdio.h> #include <time.h> #define BILLION 1000000000 int main() { struct timespec rawtime; clock_gettime(CLOCK_MONOTONIC_RAW, &rawtime); unsigned long int current = ( rawtime.tv_sec + rawtime.tv_nsec ); unsigned long int end = (( rawtime.tv_sec + rawtime.tv_nsec ) + BILLION ); while ( current < end ) { clock_gettime(CLOCK_MONOTONIC_RAW, &rawtime); current = ( rawtime.tv_sec + rawtime.tv_nsec ); } return 0; } I know this wouldn't be very useful on its own, but once I've found out how to time correctly I can use this in my projects. I know that sleep() can be used for this purpose, but I want to code the timer myself so that I can better integrate it in my projects - such as the possibility of it returning the time left, as opposed to pausing the whole program.

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  • rsync directories

    - by Buzzzz
    Hello, I'm trying to sync my music collection between my mac and my linux workstation but fails to mirror from my server share to linux. rsync -avz --progress Music/ /volumes/myserver/music works fine but the reverse on my linux ws doesnt. rsync -avz --progress /path/to/samba/share/music/ ~/Music does nothing.. Any clue what I have gotten wrong with this?? Best Regards Anders Olme

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  • Handling timeout in network application

    - by user2175831
    How can I handle timeouts in a network application. I'm implementing a provisioning system on a Linux server, the code is huge so I'm going to put the algorithm, it works as like this Read provisioning commands from file Send it to another server using TCP Save the request in hash. Receive the response then if successful response received then remove request from hash if failed response received then retry the message The problem I'm in now is when the program didn't receive the response for a timeout reason then the request will be waiting for a response forever and won't be retried. And please note that I'll be sending hundreds of commands and I have to monitor the timeout commands for all of them. I tried to use timer but that didn't help because I'll end up with so many waiting timers and I'm not sure if this is a good way of doing this. The question is how can I save the message in some data structure and check to remove or retry it later when there is no response from the other end? Please note that I'm willing to change the algorithm to anything you suggest that could deal with the timeouts.

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  • Register now to a complementary Oracle Health Sciences 3-day workshop on Enterprise Healthcare Analytics training in Dallas, US, Nov 12-14, 2013!

    - by Roxana Babiciu
    Join Oracle Health Sciences for an informative overview for Sales / Business Development and Implementation team members on Oracle Enterprise Healthcare Analytics (EHA). You’ll gain an understanding of the Oracle EHA product strategy, garner a platform overview and hear customer success stories that will enable you in the field. Be ready for technical education and training spanning three days of deep expertise sharing.

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  • Windows Server or Linux for final project

    - by user1433490
    A few weeks ago I came up with an idea to develop a mobile app which will direct students in my university to the nearest printer availiable. The whole thing is part of my final project. The Android based app will need to perform the following tasks: The user's location in the campus is sent to the server. Assume this part works just fine. The server sends an SNMP request to the printers in the user's vicinity. I'll probably use PHP or Python for that part. The data requested by SNMP is processed and sent back to the client My question concerns the server. The university's IT manager offered me a designated server for development, which sounds great. Now I need to choose which OS I want installed on the server - Windows server or Linux (don't know which versions). I don't have any server programming/operating experince, but generally speaking I feel more comfortable in Windows enviroment (just because that has always been my OS). I don't have much time for learning a new OS, but when does it make sense generally to host or develop server side applications on a Windows environment versus a Linux environment?

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  • Small Business Setup SSO LDAP VPN [closed]

    - by outsmartin
    We are not sure how to setup an efficient network. Things we got so far: Linux Server ( probably Debian ) 3 Desktops + some Laptops ( Win / linux ) NAS ~10 people working 50/50 devs/normal people :) Things we want to achieve: Working from home should be easy, VPN and firewall single username/password for everybody windows/linux desktops should have automatic synched home folders / preferably from the NAS automated hostnames for apps so others can access them like http//john.dev_app from everywhere in the VPN Need starting point and documentation on setting up with Open source tools like OpenVPN and OpenLDAP Any recommendations or links to further literature are welcome.

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  • New Exadata e-book!

    - by Javier Puerta
    Use this new e-book with your customers to learn why Oracle Exadata is the right choice for all database applications and deployments, including private cloud. Oracle Exadata is an engineered system ideal for consolidating databases and accelerating data warehousing performance. This new e-book provides access to a variety of materials including articles, white papers, workbooks, webcasts, and videos to help you achieve your goals

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  • NEC?????????????????/SOA?????????????

    - by Norihito Yachita
    ???NEC?????????????????????????????????????????????????/SOA?????????????????????????????????????????????????????????????????????????????Oracle BPM Suite 11g??NEC?????????????????????FlowLites????????????????????????????????????BPM????????????????????NEC???????????5???????????????????????????Oracle BPM Suite 11g?????????????????????????????????????????????????????????????400???????????5???????????????????????????????????????????????

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  • Active GridLink for RAC???????? NEC??????/???????! ????

    - by ???02
    ????????????????·????????????WebLogic Server 12c?????????1???Oracle Database????????????Oracle Real Application Clusters(RAC)??????????????Active GridLink for RAC?????????????WebLogic Server 12c???????????NEC??????????????????????????????????????????NEC ??IT??????????????????????????????????????(???) NEC?Active GridLink for RAC????????? NEC ??IT????????? ????? WebLogic Server?????WebLogic Server 12c?????Oracle RAC?????????????????????????????????????1??????????Active GridLink for RAC??Active GridLink for RAC??RAC?????????????????????????????????????????????????????·???????????????????????????·???????????????????????????? ???????????????????????????????????????????????????????WebLogic Server 12c?Oracle RAC??????????????????·??????????????????????????????????? ??????Active GridLink for RAC??????????????????????????????????????????????WebLogic Server????????????NEC???? NEC????????WebLogic Server???Fusion Middleware?????Oracle Database????????????????????????????????????????????????????????????????????NEC?2012?????????Partner of the Year(????)??3?????????????????????? Active GridLink for RAC?Oracle RAC??????????????????????????????????2????????????????NEC?????????NEC??WebLogic Server?????????????????????????????????????????????????????????????????????????????????????WebLogic Server?Oracle Coherence?JRockit??Fusion Middleware??????????????????????????????????????????????????????Active GridLink for RAC?????????????????????????? Active GridLink for RAC???????????????NEC????????????????SIer?????????????????????????????????????????????? Active GridLink for RAC????????????? ???????????????????????????????·?????????FCF(????????????)????? Active GridLink for RAC???????????????????1????????????????????????????????????1???????????????GridLink????????????????????????????????????????????1???????????????????????????????????????GridLink??????????????????????????? ???Active GridLink for RAC???RAC???????????????????????????????????Oracle Notification Service(ONS)???????????????????·??????????/?????DOWN/UP???????????????????????RAC??????????????????WebLogic Server????????????????ONS???????????????????????????????????????????1??????????FCF????·????????????????????????????????????????????? ??????2???RAC?2???WebLogic Server?????????????????????4???RAC?????????????????????????????????? ??????????????5????? (1)??????????·??????(RCLB) (2)Web?????·?????? (3)???RAC??????/?? (4)????????????(FCF) (5)GridLink????????????? ??????????????????????????????? (1)??????????·??????(RCLB) ??????????·??????(RCLB)???????????????????????????????????????????????????·??????????????????????????????????????????(CLB)????????????RCLB????????CLB???????????????????????? RCLB?????????Oracle RAC?????????????????(?????·??????????)????????????????????????????????????????????????????????????????·???(SERVICE_TIME)?????????1???????????????RAC????????????????????????(THROUGHPUT)???????1?????????·??????????RAC?????????????????????????? ????????????RCLB??????????????????????????(????????????????????????????????)?????????????3?????????????? ??1-a:???????????????????????? ??1-b:???????????????????????????1-c:???????????????????? ??????????????????????? ??????1-b????1-c?????????????????????????????????RCLB???????????????????????????????????????????????????????????????????????????????????????????CPU???????????????RCLB??????????????????????????? ??????????????RCLB???????????????????????????????????Oracle Database??????????CPU???????????????????????????CPU???????????????CPU?????????????????????ELAPSEDPERCALL?CALLSPERSEC???????????????????????Oracle Database??????????????????????????????????RCLB?????????????????????????????????????????? RCLB???????????????????????????FAN???????????????????Oracle RAC???????????????????????????RAC??????????????????????????????????????????????????RCLB??????????????????????????????????????????????????????????????????????????????????????????????????????????????? (2)Web?????·?????? Active GridLink for RAC?Web?????·????????Oracle RAC?????????????·?????????????????????????????????·???????????????????????????????????????? Web?????·????????HTTP?????????????????????/?????????????????????????????????????????????????????2???RAC?4???RAC?????????????·????????????????????????????????????????? ???????????RCLB??????·??????????????????·???????????????????????????????????????????????????????? ??????Web?????·?????????????????·???????????????·???????????????????????????????????????????????????????·????????????????????????????????RCLB???????????????????????????????????WebLogic Server??????????????????????·??????????1??????????????????????·?????????????????????????????? ??????NEC?????Active GridLink for RAC??????????????????????·??????(RCLB)?Web?????·??????????????????????????????RAC??????/?????????????????(FCF)???GridLink????????????????????????????

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  • ???Oracle EBS R12.1.1 Upgrade ?R12.1.2 ??

    - by longchun.zhu
    ??????EBS R12.1.1 ???,????,???????????,???????,?????????, ??????????,????,???? 2 ???,?????,???SR ,?????BUG??? ??: - Oracle Linux 5.2 (x86_64bit) - Oracle EBS R12.1.1 (x86_64bit) upgrade R12.1.2 - DB:11.1.0.7 ??????: ??: - ?Oracle AS 10g ??? - ?Oracle AS 10G for Forms and reports ??? - ???DBA UP2 ???8502056 - ?7303033 US ?? ### ??????,?????. - ?8937577 US ?? - ?7303033 CHS ?? - ?8937577 CHS ?? - ????APPS DBA ???????,autocfg ??appsutil.zip ?? ?????,?????HRMS ???,?????????? ?????1: 2?FORM ????? 2. ????66??????

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  • ?????? ??????????! ?Silver???? vol.5

    - by M.Morozumi
    ???ORACLE MASTER Silver Oracle Database 11g??????????????????????? ------------------------------- ????: ????????????????????????1????????? a. ?????????????????????????????????????????? b. ???????????????????PL/SQL ?????????????????????????????????? c. ???????????????????????????????????????????????????? d. ???????????????·??????????????????????????·????????????????? ???????????????

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  • ??????????2012

    - by ?????
    ???????????????????????????????????????????????????? ??BP?????7?4~6?????????????????2012???????? ????????????????????????IT???????? "???????"?"????"???????? ???????????????Oracle Fusion Human Capital Management?????????????????????????????????? ??????????????????????????????????????????????????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????? http://special.nikkeibp.co.jp/as/201207/oraclefusionhcm/ ???????????????????????????????????? http://expo.nikkeibp.co.jp/hc/201207/seminar/cat_e.html ??????????????????? ?????????????????Oracle HCM?????????????????????????????????????????????

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  • ?????? ??????????! ?Silver???? vol.11

    - by M.Morozumi
    ???????????????????????????????????????????????????????????????????  ???ORACLE MASTER Silver Oracle Database 11g???????????????????????  ------------------------------- ????: SYSDBA ??? SYSOPER ???????????????????????? (    )??????????????SYSDBA ??? SYSOPER ??????????????????????? (    )???????????????????1????????? ??? audit_sys_operations audit_dba_operations ????????????? ???????????????

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  • ?????? ??????????!?Bronze???? vol.11

    - by M.Morozumi
    ???????????????????????????????????????????????????????????????????  ???ORACLE MASTER Bronze Oracle Database 11g???????????????????????  ------------------------------- ????: REPLACE ?????????JACK and JUE?????????J???BL??????????????BLACK and BLUE??????????????????? REPLACE ?????????????????1????????? ???: REPLACE('JACK and JUE', 'BL', 'J') REPLACE('JACK and JUE', 'J', 'BL') ????????????? ???????????????

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  • ?know How?Oracle WebLogic Server 11g? JRuby?JMX???????|WebLogic Channel|??????

    - by ???02
    ??Java SE???????????????JMX?????????????????????????????????????????????????????????????????????????????????????????????????????JRuby??????????JMX??????Oracle WebLogic Server 11g Release 1????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????¦????????????????????????????????????????    * Oracle Database 11g Release 2??     * JDK 1.6    * JRuby 1.5.6    * Oracle WebLogic Server 11g Release 1??    * ????·????????...

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  • ??????????????????????(????)?????

    - by mamoru.kobayashi
    ??????????????????????????????????? ?????????????Oracle Argus Safety Japan 6.0??????????? ??????????2010??????????????????????? ?????????????????????????????????????? ??????? ???????Oracle Argus Safety Japan 6.0??? ????????????????????????????????? ??????????????????????????????????? ???????????????????????????????????? ???????????????????????????????????????? ?????????????????

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  • ?????? ??????????! ?Gold???? vol.3

    - by M.Morozumi
    ?????????????????????????????????????????????????????????? ????????? ???ORACLE MASTER Gold Oracle Database 11g??????????????????????? ------------------------------- ????: ???? Point-in-Time ?????????????????????????????????( )?????????? ????? ( )???????????????1????????? a.TS_PITR_OBJECTS_TO_BE_OBSOLETED b.TS_PITR_OBJECTS_TO_BE_DISAPPEARED c.TS_PITR_OBJECTS_TO_BE_DROPPED ???????????????

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  • ?????????·???????????????????????

    - by user762749
    ????????????·??????????????Oracle Business Intelligence R11.1.1.5??????????????????????? ??????????????????????????????????????????????·???????????????????????????????????iPad?iPhone??????????????????????????????????????????????????????????????????????? ???????????????????????????????????????????? ?????BI????????????????????????????BI??????????????????500??BI??????????????Oracle Business Intelligence ???????????????

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  • ?????? ??????????! ?Gold???? vol.10

    - by M.Morozumi
    ??????????????????????????????????????????????????????????????????? ???ORACLE MASTER Gold Oracle Database 11g???????????????????????  ------------------------------- ????: (       ) ?CONFIGURE AUXNAME ??? DB_FILE_NAME_CONVERT ?????????????????????·???????????????????????Recovery Manager ? TSPITR ????????????????????????????????????????????????????????????? (       ) ?????????????1????????? ???: SET FILENAME SET NEWNAME ?????????????

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  • ?????? ??????????! ?Gold???? vol.3 <??>

    - by M.Morozumi
    ???ORACLE MASTER Gold Oracle Database 11g?????????????? ?????????????????????? ------------------------------- ???? Point-in-Time ?????????????????????????????????( )??????????????? ( )???????????????1????????? a.TS_PITR_OBJECTS_TO_BE_OBSOLETED b.TS_PITR_OBJECTS_TO_BE_DISAPPEARED c.TS_PITR_OBJECTS_TO_BE_DROPPED ??????????????? ------------------------------- ??:c.TS_PITR_OBJECTS_TO_BE_DROPPED ??: ???? Point-in-Time ?????????????????????????????????TS_PITR_OBJECTS_TO_BE_DROPPED ????????????????????????????????

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  • ????????·??????????ERP???????

    - by mamoru.kobayashi
    ??????????????????????·?????·??·??·??? ???????????????????????????Oracle E-Business Suite?? ??????ERP??????????????????? ????????????????????????????????????????? ????????????????????????????? ?Oracle E-Business Suite?????????·???????? ???ERP???????????? ??????????????/??????????????????? 2005??????2008???????·??·???5??????????????? ??·??·??·??????????????????????????? ???????:????????·??????????ERP???????????????

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  • ???????New Open!?????????????????????????

    - by rika.tokumichi
    IT????????????????????????...?????????????????????????????????????????????????????! >???????! ?????????????????? ?????????????????????????????!Oracle Direct Seminar(????) ?????Oracle????????????????!Evening Seminar/Week End Seminar ?????????????????!OTN???? ?????? ??????????? ??????????????????????????????????????????!???IT???????????????????????????????????????????????????????????????????????????? >DBA Day?Developer Day??????????????? ???????????????!!

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  • Linux, GNU GCC, ld, version scripts and the ELF binary format -- How does it work??

    - by themoondothshine
    Hey all, I'm trying to learn more about library versioning in Linux and how to put it all to work. Here's the context: -- I have two versions of a dynamic library which expose the same set of interfaces, say libsome1.so and libsome2.so. -- An application is linked against libsome1.so. -- This application uses libdl.so to dynamically load another module, say libmagic.so. -- Now libmagic.so is linked against libsome2.so. Obviously, without using linker scripts to hide symbols in libmagic.so, at run-time all calls to interfaces in libsome2.so are resolved to libsome1.so. This can be confirmed by checking the value returned by libVersion() against the value of the macro LIB_VERSION. -- So I try next to compile and link libmagic.so with a linker script which hides all symbols except 3 which are defined in libmagic.so and are exported by it. This works... Or at least libVersion() and LIB_VERSION values match (and it reports version 2 not 1). -- However, when some data structures are serialized to disk, I noticed some corruption. In the application's directory if I delete libsome1.so and create a soft link in its place to point to libsome2.so, everything works as expected and the same corruption does not happen. I can't help but think that this may be caused due to some conflict in the run-time linker's resolution of symbols. I've tried many things, like trying to link libsome2.so so that all symbols are alised to symbol@@VER_2 (which I am still confused about because the command nm -CD libsome2.so still lists symbols as symbol and not symbol@@VER_2)... Nothing seems to work!!! Help!!!!!! Edit: I should have mentioned it earlier, but the app in question is Firefox, and libsome1.so is libsqlite3.so shipped with it. I don't quite have the option of recompiling them. Also, using version scripts to hide symbols seems to be the only solution right now. So what really happens when symbols are hidden? Do they become 'local' to the SO? Does rtld have no knowledge of their existence? What happens when an exported function refers to a hidden symbol?

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  • EPM System Standard Deployment Video Series

    - by Paul Anderson -Oracle
    (in via Jan) A four-part video series on deploying Enterprise Performance Management (EPM) System Products has been made available within the Oracle EPMWebcasts YouTube channel. This video series is designed for system administrators. It provides an overview of how to deploy EPM System products using the standard deployment methodology. Deploying EPM System Using Standard Deployment video series: Part 1 - Overview [3:12] Describes the EPM standard deployment and details each of the videos in the series. Part 2 - Preparing for Deployment [3:41] Discusses how to prepare for an EPM standard deployment. Part 3 - Installing and Configuring an Initial Instance of EPM System [4:11] Outlines the steps to install and configure an initial instance of EPM System components.. Part 4 - Scaling Out and Installing EPM System Clients [4:00] Provides an overview of the steps to scale out EPM System components and install EPM System client software. More information is available within the PDF document: EPM System Standard Deployment Guide 11.1.2.3 To view and and access other Oracle EPM Webcast videos visit: Oracle EPM Webcasts YouTube Channel To view and download all of the EPM product documentation visit the Oracle Technology Network (OTN) EPM Documentation Library. In addition to the Oracle EPM Webcasts YouTube channel these videos along with other EPM related product videos and information are available in the Oracle Learning Library (OLL) - visit: Oracle Learning Library - EPM Consolidation and Planning Videos

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