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#Databases

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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.

Documentation.

Question
· Jan 15, 2019
Why <UNDEFINED> on SQL

I have an sql statement that I would like to execute but I get the error

"zSearchChanges+5^MergeHyland.TypeTwoUtil.1 *KeyID"

and here is my sq

l  "&sql(SELECT Key INTO :KeyID FROM MergeHyland.TypeTwoDimesionalTable WHERE Key = :Key)" any ideas why
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The following post outlines an architectural design of intermediate complexity for DeepSee. As in the previous example, this implementation includes separate databases for storing the DeepSee cache, DeepSee implementation and settings. This post introduces two new databases: the first to store the globals needed for synchronization, the second to store fact tables and indices.

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Hi

Totally new to IRIS and Cache.

Trying to evaluate it and work out how we could use it.

As a standard application database. Object or relational etc. does not matter.

Issue is ObjectScript.

So:

1) Can we develop, maintain and use an IRIS database and never use ObjectScript i.e. use only Java, Python, C++ interfaces etc. (exactly which one does not matter)? Would that make designing and using the IRIS database more prone to inefficiency and error?

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Question
· Oct 3, 2018
CreateProperty with curl

Hello,

I have a question about creating properties with curl.

I already did create properties in Java with the following command.

<DO db.%CreateProperty("TotalSteps","%Integer","$.TotalSteps")>

It created the property TotalSteps with the type %Integer and the data path $.TotalSteps (since the header of my data source is also TotalSteps).

Now I would like to create the same property in curl with the following command

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Hi -

I need an example of what I need to "map" to have a common dashboard defined so it will visible/usable in multiple namespaces.

I have created a dashboard in "SAMPLES" (namespace and database) and I would like to have this dashboard be accessable/useable from a 2nd namespace, but I'm not having any success in doing mappings (global/package/routine/data) to be able to get DeepSee to be able to see/display the dashboard.

What is the minimum that I need to map?

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We have a new requirement being push down by our Data Security to no longer use Local SQL Accounts to access our Databases. So they asked me to create a Service Account that is on the Domain for our connections to each database.

I tried just changing my JDBC connection to using this Service Account and Password but I am not having any luck trying to connect to the database.

" Connection failed.
Login failed for user 'osumc\CPD.Intr.Service'. ClientConnectionId:ade97239-c1c8-4ed1-8230-d274edb2e731 "

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Hi I am getting below error while upgrading cache instance. Please suggest.

Error: ERROR #70: *** Error while formatting volume because
ERROR #18: failed creating a new volume initializing CACHETEMP, /*****/databases/cachetemp/ - Shutting down the system
An error was detected during Cache startup.
** Startup aborted **

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Hello everyone,

Im just wondering if there is any possibility to "Listen" to a cache DB? We have our cache DB somewhere else provided by a different company, we are provided the interface to connect to that cache DB so we can extract the cache DB every night.

Im just curious if theres a way to "listen" to the cache DB, so if theres any changes on the table in the cache DB, I could make a trigger to extract the table again.

I know i could just set my ETL every hour or so... but that would extract all the tables in cache DB.

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I work for a large NHS Trust in the UK and we are using Healthshare and we process 1000s of messages each day. Many of these are standard HL7 messages however for several months now we also pickup and drop off 1000s of PDF files.

We have our message purge set to 365 as we have to keep a years worth of messages as we have a retrieval and send process that enables us to replay any set of messages to any destination which we use to prepopulate end systems with activity and result history.

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I have a CACHE.DAT file that is working under CACHE version 2015.1.0.429.0

I have a second machine with CACHE version 2017.2.0.741.0

When I attempt to add/use the CACHE.DAT in the new version of CACHE, it will not mount.

How do I upgrade/convert the DAT file to make it work under the new CACHE version?

Thx. Larry...

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Hi,

I have a client who is considering encryption options in order to comply with a tendering requirement.

Were they to encrypt the production database then what would be a reasonable expectation forthe impact on message throughput. Or possibly more easily answered: what would be the expected impact be on I/O rate and CPU utilization. Are there any benchmarks to which could support an estimate ?

How would this compare with plan B: to use disk encryption ?

Thanks

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We have noticed in the course of the last 18 days our CACHE.dat has grown by 20 GB. Is there a way we can break down the data in CACHE.dat to see what could be growing in size?

Let me state it another way.....Is there a way to see what space an Operation/Service/Process is taking up within a certain Production?

Thanks

Scott Roth

The Ohio State University Wexner Medical Center

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Hello,

I have a property which I need to move from one class definition to another as follows:

Old definition:

Class SCHED.SchedEntry
{
  
  Property Experiment as %String;

  Property ScanSlot as list of TracerEntry;

}

Class SCHED.TracerEntry
{
  
  Property Tracer As %String

}

I want to move the Experiment property to the TracerEntry class so that there is a different Experiment allowed for each ScanSlot, like this:

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