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：
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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:
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?
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?
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
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.
Is there a way to estimate compaction / truncation sizes? For a DB when trying to reclaim disk space.
Basically, is there some utility or CLI command that would allow us to estimate if it is worth the effort of compacting a large database or not.
Thanks
When i use
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)
Hi Community!
Enjoy watching the new video on InterSystems Developers YouTube, recorded by @Joel Solon, InterSystems Senior Technical Trainer:
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.
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.
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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:
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.
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!
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.
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.
When we go to specific name space to search messages in message viewer, at the moment we are adding the search criteria to add criterion type as SearchTable Field, and clicking the dropdown in Class field, there is an error says below in the image:
Could anyone please let me know what exactly the error is from? Thanks so much.
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 $ZV is "Cache for UNIX (Red Hat Enterprise Linux for x86-64) 2015.2.1 (Build 705U) Mon Aug 31 2015 16:53:38 EDT"
I have an example class
Class tmp.A As %Persistent; Index IP1 On P1; Property P1 As %String;
for example there is one object which have P1 = 1, so
I have a custom process that is parsing HL7 and inserting it into a table. Periodically the inserts fail with # due to error: ERROR #5803: Failed to acquire exclusive lock on instance of....
Traditional databases would wait until the lock is removed then do the insert, but cache fails. I'm sure it's my coding approach.
How can I work around this? A Try/Catch loop?
Thanks in advance.
I use rest service on Health Connect and will has utilized HL7 FHIR for get information of external database. But i don't find exemplo in oficial documentation.
Someone to utilize the HL7 FHIR for info request in to external database?
Say I have a property in a persistent class that stores list of colours and I would like to query that field and return a list and be able to loop that list to get individual colours how will l go about achieving this I have tried something like this but its not working as expected
&sql(SELECT colour INTO :colourList FROM favouritecolours)
While (SQLCODE = 0)
{
for i=1:1:$LENGTH($P(colourList,","))
{
set fvalue=$P(colourList,",",i)
write "the first"_fvalue,i,
}
}
Running a Background Job using JOB command is a well-known feature.
Using ECP to distribute databases to several servers is also well know.
But using the combination of both to run a process on a different server
seems to be a rare case.
The example is available in Open Exchange
Hi everyone,
Im new in cache, i came from Java and im missing some features that i couldn't find in the documentation, I hope you can help me with this questions.
Just a brief introducction:
- Im in a project with old cache version, so saddly i can't use Eclipse + Atelier, so im using Studio.
- Currently im in a project with persistent classes, we want to turn apart the globals and focus on tables.
The questions: