#Databases

I'm looking for a way to have an IRIS db distributed over several (hw) drives.  
Without touching the internal data structures (e.g. mapping) !  
Are there any options in file systems to achieve this "splitting" or "appending" ? 

Historic background:

• Once upon a time CPUs worked on 32 bit
• Files could mostly not be larger than 2 GB
• And Caché had a (forgotten) option to EXTEND a db to a next file of another 2 GB max. and a next ...

This EXTENT was excellently suited to move fresh and active data
to a faster spindle for more performance.
 

After running an extensive block of daily statistics my IRISTEMP has expanded dramatically.   
But FreeSpace shows 97% unused and FREE space.   
How can I shrink IRISTEMP in runtime without shutdown and manual intervention
(which was the traditional approach)

October 17, 2019

Anton Umnikov
Sr. Cloud Solutions Architect at InterSystems
AWS CSAA, GCP CACE

AWS Glue is a fully managed ETL (extract, transform, and load) service that makes it simple and cost-effective to categorize your data, clean it, enrich it, and move it reliably between various data stores.

Hi! 

I need to export some data from a table on CACHE  and then import this data to a POSTGRESQL table.

Is this possible? I know I can export this data as a CSV format, but I prefer if there is a way to export that data as SQL format.

Thanks!!!

Can  InterSystems IRIS support horizontal expansion? How many nodes can it support？

New Tool Available

Please see PerfTools IO Test Suite for a later version of the Random Read IO tool.

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.

Hello everyone,

Hi Community,

In this article I compared the features of the main leaders in the ODBMS gartner quadrant - 2019. See the list sorted by number of existent features.

I have implemented a web service that inherit from %SOAP.WebService

It exposes classes with string properties : 

Class Employee Extends (%RegisteredObject, %XML.Adaptor) [ ProcedureBlock ]
{

Parameter XMLNAME = "Employee";
Parameter XMLSEQUENCE = 1;

Property FirstName As %String(MAXLEN = "", XMLNAME = "FirstName") [ Required ];
Property LastName As %String(MAXLEN = "", XMLNAME = "LastName") [ Required ];
...

Here is the issue: those properties are filled from a huge Caché database which contains forbidden XML characters (usually control characters in the 0-31 range).

I have a case where I need to look up the NPI provider against an External MS SQL database to retrieve our Provider Identifier to send to a downstream system. In the past I would use a Business Process (BPL) to connect to the outside MS SQL via JDBC and get that information for me. But I was thinking instead of creating a BPL process to do this, would it be better just to link to the outside MS SQL database table to retrieve the information in a SQL statement within a DTL?

I have an application with maps that render and edit geographic data in a some layers using KML - geo data represented into XML file with layers, polygnons, points and metadata associated with it. Some maps are in GeoJSON too. 

Is it DocDB the better option?

Can anyone explain how the database searching algorithm works in Cache database ? 

Hi

We have Edge Production where we uploading flat files clinical data, and during testing we do this for several rounds load data, test them and reload them. So everytime we have to generate differnet patient data or change MRNs etc. So request is is there a command to delete patient records that will remove from the tables, and delete reference in the registery as well.

Any guidance that you follow for testing backload data and delete loaded data, pls share

Hello everyone,
First sorry for the ignorance, but, as I am new in the InterSystem world, I came to the following doubt:
Thinking about a database migration.Is it possible, in a non-traumatic way, to take an Oracle database and migrate it completely to Caché?
 

Hi All,

I am new to InterSystems Cache and want to explore the database features for one of the use cases we have.

I am trying to find the community version of it from  in https://download.InterSystems.com but only found InterSystems IRIS and Intersystems IRIS health community versions.

Please help me to download and install this.

Regards,

Sireesha

Hi Cache team, I am in the need of listing all the user defined schemas that are present my Cache db and also the user defined tables and views and Columns of those tables and views through Queries. So that I can write some JDBC code to run the queries and fetch the above metadata. Any help is appreciated.

Thanks in Advance,

Kranthi kiran.

Hi,

         Can anyone please recommend an editor for cache database. I am looking for free version.

I am using winsql free version but data is missing while extracting or copying data from winsql.

Thanks

Jude

Hi,

I am stuck with simple logic. I have a below string 

set a="<Name>ABC</Name><RollNo>45</RollNo><Name>XYZ</Name><RollNo>66</RollNo><Name>xyz</Name><RollNo>89</RollNo>"

I need logic to replace the values of roll no with "***". Is there any single command which can help in this scanerio.

I need to store this value in database after replace.

Thanks

Hi,

I'm trying (and not succeeding) to build an index based on a collection property combined with a property, like:

Index Test On (Property, ListProperty(ELEMENTS).Property2)

For example, I have a class with this properties:
Property Simple As %String;
Property ListOfProp As List Of AnotherObject;

The, I try to create a simple index of one of the AnotherObject properties and I can compile and it creates the right index:
Index Test On (ListOfProp(ELEMENTS).Name);

But when I add a "normal" property, compiler miserably fails:
Index Test On (Simple, ListOfProp(ELEMENTS).Name);

I see command shortcuts for getting journal details, like Status^JOURNAL for displaying the journal status.

And, I'm using the shortcuts in my shell scripts.

I'm not seeing/finding command shortcuts for getting database details.

If anyone have those details, please share with me.

Thanks,

Bharath Nunepalli.

Edit:

May have found the issue but not the solution.

"SELECT * FROM wmhISTORYdETAIL" runs as a passthrough without asking for the DNS.

but

'SELECT Count([wmhISTORYdETAIL].[HistHMNumber] AS CountOfHistHMNumber FROM [wmhISTORYdETAIL] WHERE ((([wmhISTORYdETAIL].[HistMovType])='Receipt') AND (([wmhISTORYdETAIL].[HistMovDate])>=Date()-1) AND (([wmhISTORYdETAIL].[HistMovDate])<Date()));'

asks for the DNS but both are linked to a table that has the password saved.

Any Ideas please?

Rob

Hi

Hello,

I would like to schedule the Database Compact and Freespace methods as legacy tasks.

Has anyone implemented this yet?
Is this even possible? 

The request for this is due to the fact that we have 3 interfaces in a namespace whose messages are deleted after 7 days. All other messages in this namespace should be kept for one year.
This leads to a certain fragmentation. Furthermore, the messages to be deleted are relatively large (MDM^T02 > 32MB), which in turn leads to a fast growth of the database size. 

How would you solve this problem?

With kind regards

Armin Gayl

Hi,

I'd like to compare classes in two namespaces, whether the corresponding .cls code exist in both namespaces or not, and if it does exist in both namespaces, whether the CLS code is identical. If there is such a routine out there the better, I'd like to see it. If not, I know how to get a list of classes in each namespace and I can check currClss.TimeChanged. What I cannot find is the following:

Hello,

I work on deploying IRIS inside Docker container. I really like %Installer class can automate many steps. I want to establish an ECP connection to a mirror database and then define a remote database on the application server. I have already seen we can create local database and namespace in %Installer. What code is needed to establish ECP connection?

InterSystems IRIS database supports compression? If yes, wha is possible compress? (logs, temp tables, blob data, backup, etc)

Hi Community!

We're pleased to invite you to the upcoming "Speed Test: ESG Labs Database Performance Test" webinar on August 5 at 9:30 AM EDT!

Join our live webinar with Mike Leone, senior analyst with Enterprise Strategy Group’s Validation Services, to learn about a speed test that measures and compares the concurrent real-time data ingest and query performance of InterSystems IRIS^® data platform, a leading in-memory database, a cloud relational database, and a traditional relational database. 

for example :

mysql : 

alter table xxxx  CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;

 so, How to implement it  in the Cache? 

What is the sql command to describe table in cache db.

Hi,

Below To_Char function is not working as expected

SELECT TO_CHAR('12/31/1840','mm/dd/yyyy') ---01/12/1841

I expect the result to be 12/31/1840. Let me know If there are any suggestion to get the correct result.

Thanks, Meena

Hi,

I am getting below error in date column in a table. I am unable to query data or find distinct or to_char on this column.

Select distinct column name from table Select column name from table Select To_Char(column name) from table

Table has 3923509 rows.

Could someone help me how can I identify bad data in this table?

Any idea how we can avoid this error?

[SQLCODE: <-400>:<Fatal error occurred>] [Cache Error: <<VALUE OUT OF RANGE>%0AmBs1+1^%sqlcq.SMTKTUAT.cls498.1>] [Location: <ServerLoop - Query Fetch>] [%msg: <Unexpected error occurred: <VALUE OUT OF RANGE>%0AmBs1+1^%sqlcq.SMTKTUAT.cls498.1>]