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#Caché

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

Documentation.

I have some databases in my cache instance that were created from an online backup file (.cbk). I would like to see the information for these databases in the Databases and SQL sections of Management Portal, but they only appear in the Classes section. I can navigate to the files in my cache instance terminal and see the CACHE.DAT files, and a check in the terminal shows that they are mounted.

This is what I see in the terminal for each database when I check to see if the databases are mounted:

%SYS>set db="/path/for/mydatabase"

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My name is Malcolm King and I’m an experienced IT Professional seeking full time employment.
I have 25 years of experience in the software development industry, with a wide variety of skills and knowledge. I have been involved in writing both front and back end code, along with interfacing to multiple systems, using multiple languages such as Cache Objectscript, C#, Java, Javascript and SQL.

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I am exporting data from Cache using the SQL export wizard. This is on a docker image of Cache hosted on a Linux server.

I select my database, schema, and table, make sure that all columns are being exported, check other settings, and then finish the export.

All server settings look correct and permissions are rwe on the directory. I have tried various directories, including a system level directory. I tried creating the file before I do the export in case there was an issue with creating the files, and I also made sure the created files had rwe permisisons.

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Hello,

As Intersystems Cache for Windows comes with a custom Apache version (2.4.52) and has some security risks, so not advised to be used for Production servers/environments. I want to install the new version of Apache (2.4.58) and replace it with the built-in version of it. Is there an easy and convenient way to perform this upgrade? My target is to completely replace the built-in version and replace it with a new version so that it passes the security scan.

Here is the link to the security risk mentioned by Intersystems:

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InterSystems FAQ rubric

If the system does not stop for 24 hours, old journal files will be deleted at 0:30 according to the "Journal file deletion settings".

A possible cause of journal files remaining that are older than the "Journal file deletion settings" is that there are transactions that remain open.

In that case, you will be able to delete the journal file by searching for processes executing transactions and finalizing the transactions.

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Dear Fellow Cache Developers and Cache Experts,

The company I work for has a Cache Web Application that is built on the Cache ZEN framework. The application has run very well for almost 2 decades across many versions of MS Internet Explorer ranging from IE5 all the way through IE11.

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Hello, I am writing to you because I am receiving a strange error on our Integration server after restoring a Production copy.

On other occasions we had restored the Production copy on this server without problems (in fact it was done weekly)

After restoring the copy when entering the Studio this error appears:

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I am inspecting our DB globals in order to reduce sizes of the worst offenders if possible. When I come to a large global, I am interested which of its nodes are the largest. Hence code below with unexpected different results. Any explanations why are results different?

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InterSystems FAQ rubric

This error occurs when an instance of the class is already open at compile time.

There are two ways to deal with this issue:

  1. Terminate the process or application that has the instance open
  2. Compile options in the studio build menu: Check the compile flag “Compile classes in use” and compile.

If you want to determine which process is using the class, try the sample routine below.

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Hello Guys,

Our cache application uses REST web services and handles single API request perfectly with response (response status and related data). But sometimes user sends multiple requests to the same API simultaneously ( ie, without waiting for the first to respond ), where one request will succeed (not necessarily the first) and the others will fail.

So, I need to handle the requests one by one after completing and sending the response for first request in the queue then process the next request and so on.

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I am trying to get data out of a cache backup. I am completely new to Intersystems Cache.

I got a docker image of Cache from this post:

I want to get the data from my backup into this docker image. First, I need access to a gui and a cli, then I need some instructions or documentation for actually pulling in the backup data.

Thanks! This is all new, so pardon my lack of knowledge here. If I can provide any more information let me know.

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Hi all,
Does anyone have experience with obtaining logs from Caché databases and parsing them now? Please leave me a message.

I ask because my project involves some hospitals that used Caché when creating databases over 10 years ago. Currently, we cannot replace the database, but we need to check and parse the database logs from the Caché.

Thanks.

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We have a service account that is running queries to pull some data. It has read only access to the tables, but, unfortunately, the tool is starting a transaction before it reads the database. The query takes more than 20 minutes (21 - 23 minutes), so we're getting the console message that the transaction is open longer than 20 mins. Is there a way to prevent a user/service account from being able to start a transaction since it only has read access to all of the tables in the database?

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Question
· Dec 4, 2023
Storage %SYSTEM.Event

Hello, How are you doing?

I'm currently developing a proyect in wich I want to use %SYSTEM.Event to process queues. I realized that if a queue has events pending to be sent to the listeners, when I restart the cube the queue with all its events are deleted.

Is there a way to store the queue with their messages in a Global?

I've checked the documentation but I can't find any option for this prupose.

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in Management Portal on Freespace screen there are links to compact and truncate a database.

Can these tasks be done programmatically? I have looked through documentation and dont see anything but I hope I just missed it.

Thanks,

David

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InterSystems FAQ rubric

If a relationship is set and there is a large number of n in a 1:n ratio, a large amount of memory may be consumed due to sequential processing of the relationship.

After referencing a many-sided object in a program and internally swizzling it, simply releasing the variable containing the OREF (deleting it, setting another value, etc.) will not free the many-sided object and the relationship object. This is the cause.

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InterSystems FAQ rubric

There is no need to recompile the routines after the version upgrade, but since the version update overwrites %SYS, user-created INT and OBJ format routines (*.INT,*.OBJ) in %SYS will be deleted. Therefore, you need to be careful.

MAC, INT and OBJ routines with the following names are not deleted.

%Z*.INT, %z*.INT, Z*.INT,z*.INT
%Z*.OBJ, %z*.OBJ, Z*.OBJ,z*.OBJ

Please note that classes/CSPs need to be compiled after upgrading.

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I got a problem to resolve, to sum it up I need to extract a function body from a JS file with cos.
I already got the JS code in a string and the function name but I'm kinda stuck as to how to get my function body, I already tried a few things (regEx, counter bracket) but there are comment and strings that block them from functioning. Is there a javascript parser or a good way to do it except by creating a javascript parser?

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InterSystems FAQ rubric

If multiple InterSystems products are installed on the same system, the latest version of the InterSystems ODBC driver among the installed products will remain registered in the driver manager.

You can change to any driver by changing the registry entry below.

Please note that running RegFiles.bat does not change the ODBC driver.

The registry entry is as follows.

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I have written an in network single web page containing a jquery datatable. I want to add the "href" tag to link the Terminal window based on the IP.

Below is a list of failed attempts to make this work.

W " <td><a href=""javascript:pass('"_PASS_"|"_IP_"|"_USER_"|"_PORT_"')"">Terminal</a></td>"

or

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InterSystems FAQ rubric

To resolve the error <PROTECT>, remove the read-only attribute of the system-wide library database (IRISLIB for InterSystems IRIS, CACHELIB for Caché/Ensemble/HealthShare (Caché-based))

Once you have finished importing the routine, remember to change it back to read-only.

[Version 2013.1 and above]
[Management Portal] > [System Administration] > [Configuration] > [System Configuration] > [Local Database] Uncheck "Mount read-only" from the database name link.

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Question
· Nov 26, 2023
modifity status RW database

Hi folks!

I need to change a status database to RW with the class

I used scripts for this, for example, I can create a database like this

setup_database() {
csession -B -U "%SYS" <<-EOF
zw ##class(SYS.Database).CreateDatabase("/InterSystems/cachedb/mydatabase")
set Properties("Directory")="/InterSystems/cachedb/mydatabase"
zw ##Class(Config.Databases).Create("MYDATABASE",.Properties)
halt
EOF

How can I modify this status R/W?

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I'm working for an organisation that is running a very old version of InterSystems Cache (5.016) which runs on AIX . The last two times we have re-booted Cache, we have encountered rollbacks. I've been asked two questions. During the rollback it was "How long is it going to take?" and after the system returned, it was "So what caused it?". My answer to both was "I don't know".

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