Databases

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Hello All,

I am working on Files where I have to compare contents of two files and display result.
e.g Suppose file1 contains data in Name and Roll form and file2 contains data in name and class form, so it should compare name from file1 and file2 and display those matching data(Name,Roll,class).

I have piece of idea about file system so any help would be appreciated.
Thanks in advance.

Regards,
Gunwant

Last answer 2 January 2020
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HI,

I am planning to build a WebApp that will have tons of data to display in tables, ability to add comments on that table rows and may be some few more small features as we move on.

1. It has to be Secure

2. It has to be fast

3. It has to be Non CSP / Non Zen

4. Will have Cache DB to pull records from but should be flexible to do that from any odbc resource

5. Version 2018 Ensemble

My first step would have been to investigate different options for technologies that would make it work and best suited with Ensemble 2018

Last answer 22 December 2019 Last comment 23 December 2019
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Hi I am experienced with Ensemble but working in my first DeepSee project, so forgive me if this seems elementary. 

My question is, how do I clear  the data out? Every time I build I am adding more and more data. But I would like to revert my cube to being 0 so I can reload it and start over? Set my row count back to 0?

I am unable to remove/purge through the management portal

-I've tried to kill my cube Do ##class(%DeepSee.Utils).%KillCube("MyCube.Cube")  and then Rebuild it. 

 

Thanks In advance

Last answer 23 November 2019 Last comment 23 November 2019
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InterSystems IRIS supports a unique data structure, called globals, for information storage. Essentially, globals are persistent arrays with multi-level indices, having several extra capabilities—transactions, quick traversal of tree structures, and a programming language known as ObjectScript.

I'd note that for the remainder of the article, or at least the code samples, we'll assume you have familiarised yourself with the basics of globals:

Last comment 20 November 2019
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my cachedb version:
Cache Running version:
Cache for UNIX (Red Hat Enterprise Linux for x86-64) 2017.1.1 (Build 111U_SU) Tue May 23 2017 13:39:47 EDT

The frequency with which the journal is synced depends on the operating circumstances of the InterSystems IRIS instance involved. A journal sync can be triggered:

Last answer 19 November 2019
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My project need to  restore the previous part of the log,  and I use the rountine "^JRNRESTO" and filter.  After recovery completed,  the table structure is restored, but the table data is not restored, also unable to insert data into the table.

The filter is defined as follows:

Last answer 14 November 2019 Last comment 15 November 2019
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An exciting position has arisen for an Application Support Analyst 3rd Line, in an established support team. The role will suit candidates looking to work in the software industry who want to provide good customer service, enjoy finding solutions for problems and are enthusiastic about software and technology.  http://codas.com

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An exciting position has arisen for a Junior Application Support Analyst in an established support team. The role will suit candidates looking to enter, or are at the start of their career in, the software industry who want to provide good customer service, enjoy finding solutions for problems and are enthusiastic about software and technology. http://codas.com

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I would like to Compact globals in a database to free up space.   

I would begin the process on Saturday morning, but am concerned, due to the size, that it would not complete by Sunday evening.  I understand that the process is setup so that it can run with users on the system, however, as the advice indicates, this would not be ideal.

Can the process be stopped if it does not complete by the time you want/need it to?

Do you know how to guestimate how long the process would take?

Last answer 3 November 2019 Last comment 5 November 2019
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Greetings community. I would like to know how to migrate a BD in production to a local environment. When I have a system in production (BD Sql Server) what we do is mount a local copy to do the analysis with the data and not occupy resources of the system in production. My question is: How do you do it with Intersystems technology?

Last answer 1 November 2019
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Hi,

     I am trying to update an year on a date field in a cache database table but it showing an error message. But the functions are working on select query. The query I used is 

update RB_ResEffDateSessPayorRestr SET RESTR_DATETo = DATEADD(YYYY,1,RESTR_DATETo) where YEAR(RESTR_DATETo)=2020

I tried to update only the year which are 2020.

Can anyone please help me, Is there any error in the query?

Thanks

Last answer 30 October 2019 Last comment 30 October 2019
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I am new to cache programming language . I am facing below issue . please assist.

 

Question: One persistent class ID column is a combination of its properties (Roll No and Marks) [ Exact: RollNo||Marks]. When i am running the query from Management portal it is displaying data in the same format and data is there. But in the code if i am making below statement, i am getting null value.

Set ExistsID=##Class(User.School).%ExistsId(RollNo_"||"_Marks)

set ID=##Class(User.School).%OpenId(RollNo_"||"_Marks)

 

Last answer 11 September 2019 Last comment 12 September 2019
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Hi Community!

Enjoy watching  the new video on InterSystems Developers YouTube, recorded by @Joel Solon, InterSystems Senior Technical Trainer:

Globals Quickstart

 

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I'm a DBA and support Caché databases on AIX. I coded shell scripts for monitoring journaling status, databases size, license end date.

We recently got a new instance of Caché on Windows. I'm just curious to know whether anyone coded database monitoring scripts on Windows using PowerShell or any other scripting language.

If yes, please share the details.

 

Thanks & Regards,

Bharath Nunepalli.

Last answer 21 August 2019 Last comment 21 August 2019
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I have a list property that I query from the database to get the values contained in that list using $LISTFROMSTRING() when the list is returned the list values contain a rectangle like character similar to when you copy past something to the Terminal and it has a preceding space .The problem is I need to compare those values to other values and they do not match because of this value I have tried to use $EXTRACT(value,*W) and *P but this is not striping the preceding character how do I get rid of this character any ideas please. 

Last answer 15 August 2019 Last comment 15 August 2019
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An exciting position has arisen for a Junior Application Support Analyst in an established support team at CDS Computer Design Systems Ltd  CDS is an independent SME, based near Manchester City Centre, specialising in the Oil and Gas distribution software market for over 45 years with strong ties throughout the industry https:

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An exciting position has arisen for an Application Support Analyst 3rd Line, in an established support team at CDS Computer Design Systems Ltd.  CDS is an independent SME, based near Manchester City Centre (United Kingdom) specialising in the Oil and Gas distribution software market for over 45 years with strong ties throughout the industry - https://www.codas.com

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In many projects I was faced with storing hierarchical data (tree) in classes.
By tree, I mean such data, where each node has a parent node — an object of the same class.
Many examples of such data can be given. For example, a catalog in the online store. Suppose that this online store sells books, in this case, the category tree might look like this:

 

Last comment 2 August 2019
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Purpose

This tool is used to generate random read Input/Output (IO) from within the database. The goal of this tool is to drive as many jobs as possible to achieve target IOPS and ensure acceptable disk response times are sustained. Results gathered from the IO tests will vary from configuration to configuration based on the IO sub-system. Before running these tests ensure corresponding operating system and storage level monitoring are configured to capture IO performance metrics for later analysis.

Last comment 31 July 2019
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I need to copy a bunch of globals from some crufty old databases to spanking clean brand new ones. GBLOCKCOPY has this cool feature that lets you create a batch of global names to copy and save the list in a batch. You can then execute the batch and go take a nap.

I like naps.

I need to do this for a number of old-new database pairs, but it's the same global names every time. Is there a way to export the batch configuration created the first time and import it to another environment/namespace? These databases will be spread across multiple hosts.

Thanks!

Last answer 18 July 2019 Last comment 18 July 2019
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 For Data Synchronization inside Caché you have a range of ways to synchronize objects and tables.
At DB level you can use Shadowing  or Mirroring 

This works excellent and if you need just a part of your data to be synchronized you may split your
data into smaller pieces using Global mapping 
Or if you need bi-directional synchronization on Class/Table level you can use the Object Synchronization Feature 


The limit of all these excellent features:
They just work from Caché/IRIS to Caché/IRIS.

Last comment 17 July 2019
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This is a self contained class that can be run from the Intersystems Task Scheduler which records peak usage details for databases and licenses built up throughout the day and retaining 30 days history.

To schedule the task to run every hour:  

d ##class(Metrics.Task).Schedule()

You can also specify your own start time, stop time, and run interval:

d ##class(Metrics.Task).Schedule(startTime, stopTime, intervalMins)

Metrics are stored in ^Metrics in the namespace that the class resides in/is run from.

Last comment 13 July 2019
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Hello, community!

I've stumbled on some unexpected behavior, and decided to check with you if this is normal. Basically, I'm rebuilding indices and the result is not journaling (which leads to missing indices at shadow server).

The $ZV is "Cache for UNIX (Red Hat Enterprise Linux for x86-64) 2015.2.1 (Build 705U) Mon Aug 31 2015 16:53:38 EDT"

I have an example class 

Class tmp.A As %Persistent;

Index IP1 On P1;

Property P1 As %String;

for example there is one object which have P1 = 1, so

Last answer 3 July 2019
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I have a custom process that is parsing HL7 and inserting it into a table. Periodically the inserts fail with # due to error: ERROR #5803: Failed to acquire exclusive lock on instance of.... 

Traditional databases would wait until the lock is removed then do the insert, but cache fails. I'm sure it's my coding approach.

How can I work around this? A Try/Catch loop?

Thanks in advance.

Last answer 6 June 2019 Last comment 6 June 2019
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