Greetings to all!!! Suppose there is a table Mother (ID, Name) and Child (ID, Name, Mother), Mother in the table Childis a relationship. Let's say the task is to deduce the names of all the children whose their moms' names start with the letter 'A', I can do this in two ways in sql, and I can not understand the difference, the pros and cons that when to use:

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Question
· Dec 13, 2017
Cyclic Redudancy Error

HI,

We are using Cache 5.0.15 version. We are facing error. I tried to copy the dat file, I am getting cyclic redudancy error.
I did run the integrity check and repair utility . Nothing works.
Now My question is how to recover the dat file with data.

Thanks in Advance!
Sankar

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InterSystems Data Platform includes utilities and tools for system monitoring and alerting, however System Administrators new to solutions built on the InterSystems Data Platform (a.k.a Caché) need to know where to start and what to configure.

This guide shows the path to a minimum monitoring and alerting solution using references from online documentation and developer community posts to show you how to enable and configure the following;

  1. Caché Monitor: Scans the console log and sends emails alerts.

  2. System Monitor: Monitors system status and resources, generating notifications (alerts and warnings) based on fixed parameters and also tracks overall system health.

  3. Health Monitor: Samples key system and user-defined metrics and compares them to user-configurable parameters and established normal values, generating notifications when samples exceed applicable or learned thresholds.

  4. History Monitor: Maintains a historical database of performance and system usage metrics.

  5. pButtons: Operating system and Caché metrics collection scheduled daily.

Remember this guide is a minimum configuration, the included tools are flexible and extensible so more functionality is available when needed. This guide skips through the documentation to get you up and going. You will need to dive deeper into the documentation to get the most out of the monitoring tools, in the meantime, think of this as a set of cheat sheets to get up and running.

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Question
· Jun 28, 2018
Filter in table

Hi,


is there way when select a value in filter column and the second column filter use only value referred to the first selection??

we use to active filter to column in table, but not know how relationship the filter between columns of table.

only in the table context in zen page.

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Question
· Dec 20, 2018
RemoteDatabase Creation Error

How to configure Remotedatabase into our local instance. While connecting remote database i am getting "ERROR #463: Database C:\InterSystems\HealthShare2\mgr\Remote\ is not allowed for ECP Mirror Connection". so can anyone help me to sort this out.

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I have an application using examples from the lottery example in samples name space how do I create a dynamically link based on the data displayed to add a record id to the link

the idea is to loop over the records displays fields and link to edit the shown data at the end of the record in a table format

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I have problem with Cache installed on a colleague's Windows 10 laptop. On the laptop, Cache was automatically configured to use IIS and this has worked fine with csp applications configured in the Management Portal.

Now this seems to have stopped working, and I can't work out why. In IIS, the web application seems to be in the correct place.

I have manually mapped the various file extensions to CSPms, as per the documentation, but any attempt to navigate to a csp page produces an 500 error, which tells me precisely nothing about why this is happening.

For example,

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Hello community,

I need to know if there is any method which can me say specified imported files or namespaces in Cache.

To better specification of my problem, I've got two installer manifests. Firts one did some resource changing and import some files and classes, second one must be started after the first one, because it's only his update, which creates some nemaspaces. So i need to check if the first manifest ran succesful and I can start the second one.

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Every developer has made the mistake of accidentally leaving temporary debug code in place when they meant to remove it after debugging is complete. The great thing about writing in ObjectScript is that there is a way to make temporary code be truly temporary and automatically self-destruct! This can also be done in such a way that the code has no change of making it into your source control stream, which can be helpful as well.

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Hello,

I have a couple of IOT devices that communicate via WebSockets to our backend.

I successfully managed to create a websocket connection between server and (iot)client using %CSP.WebSocket
However I would like to implement authentication on this using the HTTP headers at the same time of Connection: Upgrade.

I tried to set the headers to globals in order to debug but they are always empty.

Example code:

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Question
· Oct 1, 2020
LDAPS - InterSystems cache

Hi All,

I hope all are good.

I would like to know that whether InterSystems will support LDAPS or not.
I have idea about LDAP but not about LDAPS.
Please suggest me If anyone has any documents or links.

Thanks and Regards,
Gunwant

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I am trying to use Dynamic SQL because I need to supply data at runtime.
The generated query returns 0 rows for some reason. If I copy/paste the query into Monitor, it works correctly. I am suspecting it has something to do with dates being the wrong format (I am supplying them in 'YYYY-MM-DD' format). Is that the cause? And if so, how do I supply dates in correct format?

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I'm trying to implement an OAuth2 server, but I have som issues when trying to setup JWT under OAuth 2.0->Client.

I get the error message saying "No match between server name 'localhost' and SSL certificate values 'cache'". I have set up a SSL/TLS configuration as simple as possible without any certificate files. I'm accessing my server via HTTPS with an unsigned certificate.

Can anyone point me in the right direction on how to resolve the issue I'm encountering.

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Hello InterSystems Community Members,

I hope you are all doing well. I am currently facing an issue while trying to set up the SNMP subagent functionality for my InterSystems Cache installation.

I am using InterSystems Cache for Windows (AMD64) version 5.2.4 (Build 809_0_9006U). The SNMP subagent functionality requires the iscsnmp.dll dynamic library, which I have been unable to locate in my installation directory.

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Imagine that your .NET project uses the Caché DBMS and you need a fully-functional and reliable authorization system. Writing such a system from scratch would not make much sense, and you will clearly want to use something that already exists in .NET, e.g. ASP.NET Identity. By default, however, this framework supports only its native DBMS – MS SQL. Our task was to create an adaptor that would let us quickly and easily port Identity to the InterSystems Caché DBMS. This work resulted in creation of the ASP.NET Identity Caché Provider.

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Article
· Feb 14, 2017 1m read
Can you keep a secret?

If you are developing applications that use CSP or Zen, or potentially any of the other InterSystems web-related stuff that's built on top of CSP, then it's important to know how to keep one particular secret.

A central part of the CSP security architecture is a server-side session key. "Server-side" because its value should never be revealed to the client that is issuing the web requests. If it is revealed, a malicious client might be able to use it to bypass your security and make your server do things you don't want it to.

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s ftp=##class(%Net.FtpSession).%New()

s ok=ftp.Connect(server,user,password,port)
s ftp.Timeout = 100

i ok {

s ok=ftp.SetDirectory(directory)
i ok {
n files,file

s ok=ftp.NameList(directory,.files)
i ok {
f i=1:1:files.Count() {
s file=files.GetAt(i)
i (ftp.SetDirectory(file)) {
d ftp.SetToParentDirectory()
continue
}
s fname=$p(file,"/",$l(file,"/"))

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