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#ODBC

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Open Database Connectivity (ODBC) is a standard application programming interface (API) for accessing database management systems.

Learn more.

Hi!

I'm trying to connect to one of our Ensemble servers Cache database from a C#-windows form . I'm running the client from my local computer with OS win7. Using .NET FW ver 4.5.2 in the client.

ODBC local setup using "InterSystems ODBC35"

In this ODBC konfigurationview i can put my userID and password and try a testconnect (or ping). And that run successful.

However, we don't want to leave credentials in the ODBC-configuration it self (open up for anybody to use the source) but instead send it from the klients.

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I get this on some queries in some namespaces. For instance, this query:

SELECT TOP 10 SessionId, datediff(s,min(TimeCreated),max(TimeCreated)) as ResponseTime
FROM ens.messageheader
GROUP BY SessionId
ORDER BY ResponseTime DESC

It works fine in HSBUS but in HSREG it throws the error.

Server closed communication device

Does anyone know what would cause this? Would it log something more useful somewhere?

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Hi All,

We are accessing the InterSystems`s cache database via UNIX ODBC and displaying the data in PHP website . Recently we have upgraded the PHP version to 5.6. We are getting the nondisplayable characters (�) for only strings. But the numbers and date fields are displaying correctly.

While querying the database via ISQL everything working fine (No Special characters).

I have looked around the internet and found the PHP 5.6 changed the default character to UTF-8.

For this issue anything, we can do from cache side.

Thanks in advance.

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I've asked a lot of questions leading up to this, so I wanted to share some of my progress.

The blue line represents the number of messages processed. The background color represents the average response time. You can see ticks for each hour (and bigger ticks for each day). Hovering over any point in the graph will show you the numbers for that period in time.

This is super useful for "at a glance" performance monitoring as well as establishing patterns in our utilization.

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Hi All,

I have a general query in regards to developers experience on extracting data from cache databases and the most efficient way to do so. I work with a number of clients who have applications with cache databases and require the data off the host system and onto data warehouse platforms for research and analysis. Often they require the data in source state which means the extracts are often simply a table scan of the entire database table without any aggregation or manipulation.

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Hello everyone,

I'm trying to authenticate a user(Health Share clinician) from a Java Application.

I 'm already connected to Caché and able to run SQL commands.

My question is: How can I authenticate a user using only SQL? In fact, what I want is verify if the users exists in the base and if the given password is the same used in Health Share.

There is a column 'password' in Security.users table but I'm not able to see its content, even so, I don't know which hash function to use to compare with.

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We are creating a package (written in Caché Object Script) that will provide access to an external DB (MySQL). Because applications that use our package will be run from machines with various, potentially unexpected, operating systems, we’d like to establish a connection to the external DB without using DSNs (we’ve heard that setting up DSNs on certain non-Windows machines can be cumbersome and problematic).

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I have a MySQL server with "posts" table.

I also have a Caché server with "downloadedposts" table.

They are connected from Caché to MySQL via SQL Gateway

I want to keep Caché table synced with MySQL one (MySQL "posts" table is a master copy), so periodically Caché queries MySQL server and downloads data. So far so good, and if a record appears or changes in MySQL table, Caché downloads the changes.

The problem I'm encountering is that sometimes rows would be deleted from MySQL "posts" table.

How do I synchronize deletions?

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Hi!

Is there any simple way to query data about processed messages in all Ensemble productions?
What I ultimately would like to do is to periodically export that data to another system and run statistics on it.

I've been digging around in the SQL tables view and Ens.MessageHeader seems to contain most of what I'm after.
Using ODBC I could access that table view and query data, but only for one namespace per DSN it seems.

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