Article Robert Cemper · Sep 29, 2021 2m read My Reviews on Open Exchange - Sept.2021 If one of your packages on OEX receives a review you don't get notified by OEX only on YOUR package.So @Evgeny Shvarov suggested publishing my monthly summary of reviews here in DC.It reflects my experience with the status I found at the time of my review. #Open Exchange 2 1 0 239
Article Robert Cemper · Sep 11, 2021 2m read Successful Troubleshooting During the last weeks, I was working on various issues and problems related to SW development.I found that quite often problem analysis was mostly chasing issues just on the surfacebut not really attacking the deeper reasons of the problem and follow the consequences.It's like the doc that stops your leg bleeding but doesn't see that it is broken. #Other 8 2 0 535
Article Robert Cemper · Sep 10, 2021 4m read Storage Considerations on large data sets I'd like to share with you some storage features that also exist in Caché but are almost unknown and mostly not used. They are of course available in IRIS and gain importancewith large and distributed storage architectures. #Other 15 0 1 548
Article Robert Cemper · Aug 31, 2021 2m read My Reviews on Open Exchange - August 2021 If one of your packages on OEX receives a review you don't get notified by OEX only on YOUR package.So @Evgeny Shvarov suggested publishing my monthly summary of reviews here in DC.It reflects my experience with the status I found at the time of my review. #Open Exchange 5 0 0 248
Article Robert Cemper · Jul 30, 2021 2m read My Reviews on Open Exchange - July 2021 If one of your packages on OEX receives a review you don't get notified by OEX only on YOUR package.So @Evgeny Shvarov suggested publishing my monthly summary of reviews here in DC.It reflects my experience with the status I found at the time of my review. #Open Exchange 7 2 0 245
Article Robert Cemper · Jul 15, 2021 1m read Docker Desktop Windows - disk space consumption I run most of my reviews using Docker Desktop on Windows 10.According to the recommendations, I clean up docker and downloaded repositories after tests: Repos are simple but Docker is somewhat resistant to release the consumed disk space. #Docker #Other 15 2 3 3.2K
Article Robert Cemper · Jul 15, 2021 4m read The future position of ObjectScript If you develop in IRIS you are confronted with two major phenomena: an incredibly fast and excellent designed data storage engine a scripting language to work on this storage engine, actually named ObjectScript #Embedded Python #Languages #ObjectScript #Python #InterSystems IRIS 31 33 1 1.8K
Article Robert Cemper · Jul 10, 2021 2m read My Reviews on Open Exchange - June 2021 If one of your packages on OEX receives a review you don't get notified by OEX only on YOUR package.So @Evgeny Shvarov suggested publishing my monthly summary of reviews here in DC.It reflects my experience with the status I found at the time of my review. #Open Exchange 5 0 0 190
Article Robert Cemper · Jul 10, 2021 2m read My Reviews on Open Exchange - Apr+May 2021 If one of your packages on OEX receives a review you don't get notified by OEX only on YOUR package.So @Evgeny Shvarov suggested publishing my monthly summary of reviews here in DC.It reflects my experience with the status I found at the time of my review. #Open Exchange 4 1 0 333
Article Robert Cemper · Jun 12, 2021 2m read Running reviews on Open Exchange For several weeks I'm creating reviews on OEX. So I'd like to explain to you the criteria that I apply to find my ratings.Of course, each reviewer is an independent person and has his own criteria and his own opinion.And that's good and important! As Winston Churchill once said: "If 2 people always have the same opinion, then 1 of them is superfluous" #Open Exchange 6 6 0 378
Article Robert Cemper · Apr 26, 2021 3m read SSH for IRIS container Why SSH ? If you do not have direct access to the server that runs your IRIS Docker containeryou still may require access to the container outside "iris session" or "WebTerminal".With an SSH terminal (PuTTY, KiTTY,.. ) you get access inside Docker, and then, dependingon your needs you run "iris session iris" or display/manipulate files directly. Note: This is not meant to be the default access for the average application userbut the emergency backdoor for System Management, Support, and Development. #Cloud #Containerization #Development Environment #Docker #System Administration #Terminal #Ubuntu #InterSystems IRIS Open Exchange app 2 34 0 1.2K
Article Robert Cemper · Apr 16, 2021 1m read How to execute IRIS restart from inside Some changes in IRIS configuration require a restart of IRIS.This is no big issue as long as I have access to the server command line with sufficient privileges.In a container, this is not always given.Stopping IRIS from the terminal/session prompt is no problem.But the restart after is. Note1: container start-stop is no option as it might be removed by option --rm in docker runNote2: the target is linux (manly in docker). Windows is excluded GitHub #DevOps #Docker #Ubuntu #InterSystems IRIS 9 4 0 1.1K
Article Robert Cemper · Apr 9, 2021 1m read Splitting an IRIS db to multiple drives I'm looking for a way to have an IRIS db distributed over several (hw) drives. Without touching the internal data structures (e.g. mapping) ! Are there any options in file systems to achieve this "splitting" or "appending" ? Historic background: #Databases #DevOps #InterSystems IRIS 0 1 0 222
Question Robert Cemper · Apr 9, 2021 Moving IRIS db in runtime I'm almost running out of disk space so I want to move 1 DB to a different hard drive. It's a rather simple but lengthy action during a shutdown of IRIS. But is this somehow possible under runtime in a stand-alone installation? I'm looking for kind of a "local drive failover" note: Mirror or Shadow is not an option. #Deployment #DevOps #Management Portal #InterSystems IRIS 1 3 0 300
Question Robert Cemper · Apr 9, 2021 How to shrink IRISTEMP db in runtime? After running an extensive block of daily statistics my IRISTEMP has expanded dramatically. But FreeSpace shows 97% unused and FREE space. How can I shrink IRISTEMP in runtime without shutdown and manual intervention(which was the traditional approach) #Databases #DevOps #Management Portal #InterSystems IRIS 1 2 0 504
Article Robert Cemper · Apr 3, 2021 2m read Wrap JSON to multi lines / Test ISJSON install and usage Packed Pretty.xml installs routine ZPretty in any namespace.calling $$Do^ZPretty(input,[filler],[newline]) returns a wrapped JSON string.filler is the optional string for the indent, default = " "newline is optional, default = $C(13,10)input accepts: JSON_String, JSON_Stream, %DynamicAbstractObject #Other Open Exchange app 6 0 0 475
Article Robert Cemper · Mar 27, 2021 3m read IRIS easy ECP workbench Testing ECP-based applications often take quite some effort for setup and preparation.I have created a Docker-based workbench that allows you to have it quick at hands.And if you crash it? You just give your containers a fresh start.The whole setup runs code-based during the start-up of your instance.In that sense, it is also a portable coding example using ZPM and the objectscript-docker-template see Video #Docker #ECP #Tips & Tricks #InterSystems IRIS Open Exchange app 4 3 0 657
Article Robert Cemper · Mar 24, 2021 1m read Problem with docker-compose Environment: Windows 10 Docker Desktop version v20.10.5 #Docker #Microsoft Windows #InterSystems IRIS 3 1 0 1.8K
Article Robert Cemper · Mar 14, 2021 1m read Using ClassQueries() as Tables Similar to Caché so also in IRIS, you have ClassQueries available in 2 variants Basic class queries, which use the class %SQLQuery and an SQL SELECT statement. Custom class queries, which use the class %Query and custom logic to execute, fetch, and close the query. #Other 11 11 0 644
Article Robert Cemper · Mar 5, 2021 3m read Using ECP across IRIS and Caché Migration from Caché to IRIS can be quite a challenge if your code is grown over many years and probably not so clean structured as you may like it. So you face the need to check your migrated code against some reference data. A few samples might not be a problem, but some hundred GB of data for testing might be. A possible step could be to have your fresh code in IRIS but leave your huge datastore on Caché and connect both environments over ECP. I have created a demo project that gives you the opportunity to try this based on 2 Docker images with IRIS and with Caché connected over ECP. #ECP #Caché #InterSystems IRIS Open Exchange app 12 2 0 863