New post

#Caché

41

  

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

Documentation.

Your application is deployed and everything is running fine. Great, hi-five! Then out of the blue the phone starts to ring off the hook – it’s users complaining that the application is sometimes ‘slow’. But what does that mean? Sometimes? What tools do you have and what statistics should you be looking at to find and resolve this slowness? Is your system infrastructure up to the task of the user load? What infrastructure design questions should you have asked before you went into production? How can you capacity plan for new hardware with confidence and without over-spec'ing? How can you stop the phone ringing? How could you have stopped it ringing in the first place?

24 13
6 4.7K

I'm getting wrapped around the axle with CAST and CONVERT and can't seem to find a way to do this (short of adding a stored procedure wrapping $zdt($zdth(posix,-2),3), which I'm refusing to do on principle, because there has to be some way to make this work).

Any ideas?

1 4
0 297

I am calling a stored procedure over an ODBC connection and every time I call it there are several warnings written to the log event {Found no Parameter 1 (used as 1) for query}.I seem to be getting this on every query executed and that seems to happen a number of times the query parameters are per query and its filling up my disc.

1) Is there a way to suppress these warnings as the query seems to be executed and data written to the database?

1 1
0 286
Article
· Jul 19, 2022 4m read
Caution with Mixing OO and SQL

Mixing Object syntax with SQL is one of the nice features in Object Script. But in one case, it gave strange results, so I decided to isolate the case and describe it here.

Let's say you need to write a classmethod that updates a single property on disk. Usually, i would write that using SQL like this :

2 5
0 350

I want to display to the user on their Zen page how much time is left before their session times out.

I know I can set the %session.AppTimeout to a particular value (or manage this in the Web Application) and I know I can retrieve this value from the %session object. I also know that I can set an event handler to do something when the session has timed out but I cannot find any way to determine how long before the session ends via the application timeout so that I can keep the user informed.

0 3
1 482

There are many ways to generate excel files using Intersystems, some of them are ZEN reports, IRIS reports ( Logi reports or formally known as JReports), or we can use third party Java libraries, the possibilities are almost endless.

But, what if you want to create a simple spreadsheet with only Caché ObjectScript? (no third party applications)

15 15
10 2.1K
Question
· Jul 7, 2022
HELP DOUBTS MSM-MUMPS-UNIX

Hi, can anyone tell me how I should do the parameter calculation below in the MSM / MUMPS of Intersystems? STAP SIZE
STACK SIZE
MAX MODIFIED BUFFERS
DISK I / O RATE
SLICE COMMANDS
PARTITION SIZE
BUFFER POOL SIZE

0 5
0 406

Let's say I have two lists of connected data where elements of listTwo only make sense if given an item of listOne as context:

listOne = ["A", "B", "C"]

listTwo = ["x", "y", "z"]

Tuples like ("A", "y") and ("C, "x") make sense, but "A" or "x" by themselves don't. I would like to pass in a list of such tuples into a method and have it handle each tuple in the list. So what would be the best way to format them given that ObjectScript does not have specialized tuples? Would it be nested $LISTBUILD lists or something else?

0 1
0 330

We have the following code, but recently had a few issues with messages sent to downstream systems being rejected.
After investigating, seems that the message being sent is being truncated, the RawContent that we are pulling from Ens.EnsLib_HL7.Message only has the first 10k of the message

We are storing message body IDs in a table, then when we receive later messages, we look up the corresponding record in the table,
extract the message and alter some fields from the saved message based on the received message and send onto downstream systems

0 4
0 574
Question
· Jun 24, 2022
RowSpan

What is the correct way to specify rowspan and colspan in a ZEN PDF report using <Item> <Caption>

I am specifying rowspan in the <Caption> tag after the <Item> but it's not working.

0 1
0 355
Article
· Aug 26, 2016 2m read
TLS v1.2 support in Caché

Question:

What version of Caché supports TLS v1.2?

Answer:

Caché 2015.2 announced support for TLS v1.1 and v1.2. In this version, the SSL/TLS configuration page provides checkboxes for TLS v1.1 and v1.2, which allows the versions to be configured individually. This allows sites to, for example, require TLS v1.2 only.

Additionally, some earlier versions of Caché provide undocumented support for TLS v1.1 and v1.2, specifically Caché 2014.1.3 and above and 2015.1, on Windows, Linux and Unix.

6 1
0 2.4K
Question
· Jun 21, 2022
Freeze MSM/MUMPS

Hello, today we had another freeze in the system. It was close to 09:55. Logs follow for analysis. Following are MSM/MUMPS logs with about 1050 active connections at the time of the freeze. Does anyone see something different?

0 4
0 599

I have a table with a Varchar(max) column that I have created via the HealthShare SQL portal, and I see that in it's underlying class that column corresponds to a %Stream.GlobalCharacter

When I try to do a text search on that column (referenced as cd.Code in the example below) I get an error

0 1
0 346

In this series of articles, I'd like to present and discuss several possible approaches toward software development with InterSystems technologies and GitLab. I will cover such topics as:

  • Git 101
  • Git flow (development process)
  • GitLab installation
  • GitLab Workflow
  • Continuous Delivery
  • GitLab installation and configuration
  • GitLab CI/CD

In the first article, we covered Git basics, why a high-level understanding of Git concepts is important for modern software development, and how Git can be used to develop software.

In the second article, we covered GitLab Workflow - a complete software life cycle process and Continuous Delivery.

I this article we'll discuss:

  • GitLab installation and configuration
  • Connecting your environments to GitLab
2 2
1 2K
Article
· Dec 12, 2016 3m read
Generate and Validate Captcha Code

Suppose you have developed your own web app with InterSystems technologies stack and now want to perform a captcha validation on the client side in order to determine whether or not the user is human and make it safer. There are some modern frameworks to address the captcha issue, however most part of them needs internet access to generate codes and sometimes are complex to implement. Take this as basic example considering that image recognition has gotten too good. That's why you nowadays you tend to see more pattern recognition captchas than mere reading ones. (I.e.

7 9
2 1.6K

Is there a way for us to restrict user's ODBC permissions based on what program they're running on a client?

For example, we have some older Windows apps (.exe) that are a regular part of our software package which require the user to be able to select, insert, update, and delete. Some of our users are also using other third-party apps to connect (mostly reporting tools) but we only want them to be able to select unless we've approved the exe. Is there a way to do that?

These are not applications that were developed using CacheDirect.

0 6
0 366

Only a few days to go until the Global Summit! George James Software will be on hand to talk about any projects you may have on the horizon, such as application development, data and platform migration, system integration, training, and support – we can work with you to find practical and maintainable solutions that support the growing needs of your organization.

We're also running a User Group Session on Wednesday, July 22nd at 12pm. It's a great opportunity to find out more about our tools and ask us (and current users!) any questions.

3 0
0 186