go to post Alexey Maslov · Jun 11, 2020 Do you plan to allow subpackages, e.g. dc.myapp?What to do with those apps that had been already uploaded to Open Exchange before this naming convention will be established?
go to post Alexey Maslov · May 14, 2020 Hi James, A colleague of mine developed JDBC based solution in question which works with Oracle, mySQL and Caché a while ago.It's based on the following classes: %Net.Remote.Java.JavaGateway %Net.Remote.Java.JDBCGateway (This class is used internally by Caché. You should not make direct use of it within your applications.) Despite the last remark, InterSystems follows the similar approach in its Ensemble / IRIS outbound adapters.Our solution is compatible with actual versions of Caché and IRIS. Regretfully, it's too bound to our app, so I'm not sure whether it is the best source of sample code at the moment.
go to post Alexey Maslov · May 8, 2020 It depends. Switch 10 which inhibits all global/routine access except by the process that sets this switch should meet, while setting it can interfere with your _own_ activity.Switch 12 which disables logins can be insufficient for disabling web access, which is easier to restrict by stopping web server. I didn't personally experiment with those switches as we have no such problem because our application utilizes its own "disable logins" flag by locking the variable.
go to post Alexey Maslov · May 7, 2020 to avoid unexpected problems with other user operations ... is usually easier to disable users sign-on by setting switch 12, or restrict their activity by some other appropriate switches combination (see Using Switches).
go to post Alexey Maslov · Apr 20, 2020 Another possible approach: copy global stream to file process it using external OS call; in Linux we use its native zip/unzip utilities, in Windows - console version of popular free 7-zip tool.
go to post Alexey Maslov · Apr 2, 2020 Hi Graham,the code published above is a Task Manager task. If you need flexible Task to purge .cbk and .log files created by internal online backup tasks of any kind, you may also want to look at cmPurgeBackup.
go to post Alexey Maslov · Mar 17, 2020 Just adding 2c to Kevin's reply. Most hosts that support TCP also support TCP Keepalive Besides, server application should support it. 3 hours keepalive time setting is not typical; it sounds like your server app not tuned for keepalive support or doesn't support it at all. In case of IRIS/Caché, you should explicitly set some options on connected server socket, e.g.: start(port) // start port listener s io="|TCP|"_port o io:(:port:"APSTE"):20 e quit while 1 { u io r x u $p // connection is accepted: fork child process j child:(:5:io:io) } child use $p:(:/KEEPALIVE=60:/POLLDISCON) ... /KEEPALIVE=60 to set keepalive time to 60 seconds/POLLDISCON to switch on TCP probes.
go to post Alexey Maslov · Mar 10, 2020 Stuart, Unless you publish the failing code fragment, it would be difficult to help you.
go to post Alexey Maslov · Mar 2, 2020 Congrats! Can we expect publishing your code aimed "...to simulate NYSE data processing (Order/Fill)..." as an Open Exchange App?
go to post Alexey Maslov · Feb 27, 2020 Thanks, Alexander. Do you know by chance, why RHEL 8 listed as a platform for IRIS 2019.1.1 was excluded from the list for (unreleased) IRIS 2019.1.4 and even for (pre-released) 2020.1?
go to post Alexey Maslov · Feb 27, 2020 As to Supported Server Platforms, it might be even Ubuntu 18.04 LTS for x86-64 rather than 16.04. And what about RHEL 8? Which IRIS version will be supported under this OS?
go to post Alexey Maslov · Feb 17, 2020 Paul's warning sounded like this setting changed after the instance re-installation, while it unlikely could, as even in IRIS, according to docs: System-Wide Security ParametersAllow multiple security domains ... [Default is a single domain]
go to post Alexey Maslov · Feb 7, 2020 Walter, Why not configure different ports for your both instances?
go to post Alexey Maslov · Feb 7, 2020 OK, but OP's intention was to block analysts to start the interface in copy #2 while your method just checking whether it's free.
go to post Alexey Maslov · Feb 5, 2020 Neerav, not sure about pound, but each SI unit is defined according to correspondent standard. E.g., take a look at Current definitions of the SI units.
go to post Alexey Maslov · Feb 5, 2020 Dmitrii,Your ideas sound interesting, while I have some doubts. One usually needs speed for scientific calculations. Skipping the discussion how good ObjectScript as interpretated language fits this need, if we place upon our (even small) additional interpreter, nobody would envy our calculation speed. Your most infamous errors list can be appended with many others, such as "DO I=1.3" error which destroyed some satellite. Besides, missing The International Date Line example is merely logical error that derives from "common" inaccurate development practice. Alas, such development errors list is sadly long, and I doubt if physical measures mismatch has the highest rate among others.
go to post Alexey Maslov · Feb 5, 2020 The easier the better: if $data(^$Job(PID)) // then the process with PID is running... But each method mentioned above has a potential problem: if the process with PID had finished far ago, the O/S PID counter could run a full cycle, and another Caché (IRIS) process could start with the same PID. The full solution may worth a separate article, while the simple one is: just to collect garbage often enough. To my experience, once a day is usually quite enough even on high loaded systems.
go to post Alexey Maslov · Jan 28, 2020 Jeffrey, thank you for the info. Do you already know that the Supported Platforms document link is broken? (404)
go to post Alexey Maslov · Dec 11, 2019 Marat, Maybe it's possible to build a dictionary of wrong decoding of typical words and use it for encoding guessing. E.g., a word לרפאwill probably be a typical one in a medicine text. Wrong decodings can be collected using a tool like this. Using pronouns, articles or prepositions as "universal" typical words can even be a better idea.
