InterSystems Caché database is a file where all the data, application scripts, and users, roles and security configurations are stored. Typically the name of the file is cache.dat.
I've been accessing Cache tables from a developer/reporting side, but am now involved in a project to create a data warehouse for our application. I'm trying to find a query I can use to return the sizes of all the tables in the database, so we can identify the largest tables and handle those individually. Can someone give me a query I can run against our Cache database to return the sizes of all the tables from largest to smallest?
In my previous articles I demonstrated the steps to connect and retrieve data from Caché from Appeon PowerBuilder by using ODBC. In this article I will demonstrated how to Save data to Caché with Appeon PowerBuilder (https://www.appeon.com/products/powerbuilder) by using ODBC
I am relatively new to Intersystems cache database management. As I understand it, a database is set with a maximum size or unlimited and the size of each space allocation for the database is defined. My understanding is that the cache database will then manage the allotment of space to the database as the current space allocation is consumed. Though I do not know why one would want to do this, I have been told that the space allocation to a database can be set to be handled manually. This is something, if true, I was not aware of.
I have a workstation with a CACHE instance up and running.
On that same workstation there is also an instance of IRIS (fresh install). I would like to migrate manually the CACHE database to IRIS (ideally, all globals, routines and classes).
What I tried is to copy C:\InterSystems\Cache\mgr\CACHE.DAT to C:\InterSystems\IRIS\mgr\IRIS.DAT (after shutting down both instances) but it does not work.
I got the following message :(112) The service for the IRIS instance did not start.
In this webinar, you'll get an overview of the interoperability capabilities of InterSystems IRIS, and we'll show you how to use the PEX. Also, we’ll discuss and answer your questions on how to build interoperability solutions using InterSystems IRIS and IRIS for Health.
I would like to know if an encrypted caché database can run significantly slower than a normal "unencrypted" database, in a way that is noticeable to the end user (e.g. slower response time for most pages, especially the ones that rely on read/writing to globals).
I searched in Intersystems knowledge base and couldn't find anything related. I'm looking for possible before/after benchmarks.
Appeon PowerBuilder is an enterprise development tool that allows you to build data-driven business applications and components. It is one of a suite of Appeon products that together provide the tools to develop client/server, Web, mobile, and distributed applications.
I hope you can help me because this is a very serious that I can't wait to resolve... Our back-up is currently taking 3 up to 4 Gb per day and we don't know why. We had 270 Gb yesterday and we are today at 274.3 Gb. We keep a computer history of the messages for only 50 days. Here is a picture of what's currently taking the most data place in our healtshare system:
(don't forget that our DB is also connected to the back-up, maybe it is related, I don't know)
Upon creating namespace I selected same database for both Globals and Routines. How can I separate both the databases. Please note that I already have data and code saved in database.
We have started to see Journal Daemon inactive and DBLatency warnings in the Console log of our Healthshare server. OS is Windows Server 2008 running in a VM. See below
How can you find referenced entries in a table that have been deleted with the drop column? I have to find all fields in the database afterwards and then delete them properly. Has anyone had this problem yet? Can the information be found in the class or storage definitions?
In a typical database, changing the type of a column from some kind of date/time to a string would require a degree of migration effort for existing values. In Caché, my suspicion is that this is not the case, and I could simply change a property definition from %Timestamp to %String (MAXLEN = "30") and recompile, without needing to worry about damaging the existing data stored for this property. Is this correct? Or would I find the existing data in this property being lost or corrupted?
I have a DR member and in this cache server the database "cachetemp" start to getting bigger without any reason (50GB that was all the free disk space we have)
In the members of the mirrors the cachetemp its ok and the size is 31MB.
I restarted the server because I read that the cachetemp database purge when restarting, but didnt happend.
Any recommendation to clean this database? can I just deleate the CACHE.DAT from this database?
I am talking from Brazil and we have one very important customer that requested our support to find a consultant, deeply specialized in Cache that could work with us attending this customer. It has a tons of data and its core application is based on Cache.
If you are interested send me an email with the subject title - Cache consultant opportunity - and we will make contact with you. The main request is how strong are your skills in cache and it would be considered a differentiator if you are a portuguese speaker.
We have a need to track Database changes over time - down to the SQL level of granularity if possible. Such as: User xyz runs routine ^abc and we get something similar to a changelog that tells us: table A had this value updated, insert, update etc....
Is that possible using IRIS level tools (Audit Log, Journal File, etc...) , is there a way to convert the global sets and kills from the journals into SQL level changes?
At the heart of IRIS and Cache is a very interesting database architecture that we, at M/Gateway Developments, refer to as "Global Storage". If you ever wanted to know more about the fundamentals and capabilities of this underlying database, you might want to read a major analysis we've put together:
In this article we are going to show the results of the comparision between IRIS and Postgress when handling Astronomy data.
Introduction
Since the earliest days of human civilization we have been fascinated by the sky at night. There are so many stars! Everybody has dreamed about them and fantasized about life in other planets.
I want to create a Sample Database for Cache InterSystems and want to access it via Cache Entity Framework Provider. But, I cannot find a particular engine of Management Portal to create a database.
Can you guide how to install Management Portal in Windows?
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" ?
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)
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.
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