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#Caché

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InterSystems Caché is a multi-model DBMS and application server. See more details here.

Documentation.

Hey Developers,

Enjoy watching the new video on InterSystems Developers YouTube:

⏯ Real-Life Experiences Migrating a Caché Application Portfolio to InterSystems IRIS @ Global Summit 2022

https://www.youtube.com/embed/xUIULmh6LhY
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Question
· Jun 2, 2017
Decoding Base64 PDF File

Hello, I am writing some cache code that will pick up a PDF file, Base64 encode the contents and then send on to a third party system within a Long String (via their API). I have been testing this and discovered that the PDFs do not open within the supplier system (I get an error saying that it hasn't been decoded correctly). I wanted to prove that the issue does not lie with the way that I have Base64 encoded it within Ensemble, and therefore as a test wanted to Encode the PDF stream, then decode the stream and write out to a new file.

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InterSystems Official
· Feb 15, 2023
InterSystems Supported Platforms Update Feb-2023

InterSystems Supported Platforms Update Feb-2023

Welcome to the very first Supported Platforms Update! We often get questions about recent and upcoming changes to the list of platforms and frameworks that are supported by the InterSystems IRIS data platform. This update aims to share recent changes as well as our best current knowledge on upcoming changes, but predicting the future is tricky business and this shouldn’t be considered a committed roadmap.

We’re planning to publish this kind of update approximately every 3 months and then re-evaluate in a year. If you find this update useful, let us know! We’d also appreciate suggestions for how to make it better.

With that said, on to the update…

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InterSystems has corrected an issue that can cause InterSystems IRIS® and Caché to not take advantage of large pages for shared memory on Windows, even though these products report that large pages are allocated. This can have detrimental effects on system performance.

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Out of curiosity, I was looking in ^ROUTINE global to see how routines are stored internally.

I found out that lot of nodes are displaying "~pointer" as associated value (eg: instead of a string).

What are those pointers ? My guess is that it references some cache internal structure (eg: some nodes inside a B-Tree).

Is there a easily way to see what is behind ? Are pointers useful for user globals or is this something purely internal to Cache database ?

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Listen to CEO George James chat with Derek Robinson, host of the InterSystems DataPoints podcast talk about source control, developer tools and how our solutions are beneficial for InterSystems IRIS users.

 

In this short 17 minute episode, George and Derek discuss our work with developer tools, and how choosing the right source control can provide users with a seamless solution - which is why Deltanji is seen as the go-to source control for InterSystems IRIS users.

Listen now on the InterSystems website > https://bit.ly/3Jp5py5
or wherever you get your podcasts - just search for 'InterSystems DataPoints'.

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Mirroring 101

Caché mirroring is a reliable, inexpensive, and easy to implement high availability and disaster recovery solution for Caché and Ensemble-based applications. Mirroring provides automatic failover under a broad range of planned and unplanned outage scenarios, with application recovery time typically limited to seconds. Logical data replication eliminates storage as a single point of failure and a source of data corruption. Upgrades can be executed with little or no downtime.

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Question
· Nov 14, 2022
SSL Configuration for Gmail

Hi Community,

I am configuring new SSL Configuration for Gmail (For sending errors to gmail in ensemble production) by following the below steps.

Step1:

Step2:Giving the server address smtp.gmail.com

Step3:Giving the port number , I have tried giving 465,587,25 as port number still is not connecting

Can anyone please tell me where i am doing wrong on configuration?

Thanks,

Saroja.A

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Question
· Jan 30, 2023
SQL Query Help in $ListGet

Hi All,

I want to run an SQL like below

Select ID,Rollno,Marks,Name,Section,Teacher from Marks left outer join Student on Marks.StudentID=Student.ID

Now, the Student.ID is having the encrypted value which is not matching with Marks.StudentID (as this is clear value).

I can get the clear value using encrypted value as follow

^StoreValue("EncryptStudentID",Student.ID)=$LB("123"). That 123 is the clear Student.ID which I need to match in SQL query (ON clause).

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Question
· Jan 30, 2023
SQLComputed Code issue

Hi All,

I have a below query for which I need help.

I have a persistent class User.Cars.cls. The properties of this class is mapped through Global mapping with global (^CAR(Date,CarSerialno,Seq)).

Property CarNumber as %String (TRUNCATE=1) [SqlFieldName= CAR_Number];

Mapping of 5th Piece of ^CAR global to CarNumber property.

For e.g.^CAR(Date,CarSerialno,Seq)=1^2^3^4^BMW 4567^6^7

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Hi All,

I am currently using D $SYSTEM.SQL.Shell() command or management portal to retrieve the data from database. I just learned we can also run cache table sql queries in MS access. MS access already installed on my machine.

I need to ask how I can connect my database of USER or sample namespace in MS access to run these SQL queries.

Thanks in advance!!

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Question
· Jan 19, 2023
CSP Page error

First of all thank you for your time in reading this question and writing a response,

We would need some help, I have created a csp page, but the first time I access it, it gives me this error:

5918 You are logged out, and can no longer perform that action

When I refresh the page, it works ... Why?

Thank you in advance!

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Hi All,

I am a beginner in cache. I need to extract data from multiple tables (4-5) tables based on an SQL query . The data is more than 9 lakhs of records (i checked using count). The total number columns is 16.

When I am running this SQL query through management portal, I am getting time out exception. Could you please suggest how I can retrieve those records. Which way will be good (Dynamic query using %SQL.Statement or Embedded SQL (not known to me) or Writing to a global will help or not).

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Hi All,

Hopefully someone can help me with this case. I need to encrypt a text(querystring) with an AES265 encryption. An other vendor is decrypting this information. I have a working class in C#. I've tried to build the same in Objectscript for the encrypt part but there's a missing link somewhere. What's the difference between the C# and Objectscript implementation?

Objectscript code (until now):

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Hello all,

I just started learning SQL and am also new to Cache...

I am dealing with a simple SQL query and trying to understand the components of the following expression do:

STRING(city_name, ' - ', city_code) into :CODE, :VALUE

I understand what the STRING function does. However, I am lost after that:

"into:CODE, :VALUE"

What do these do?

Thanks!

Deguza

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