New post

#Database Transaction Processing

6

Databases and other data stores which treat the integrity of data as paramount often include the ability to handle transactions to maintain the integrity of data. A single transaction consists of one or more independent units of work, each reading and/or writing information to a database or other data store.

Documentation.

Question
· Jan 12, 2020
Timeout for $zf

In one of the projects, when we have ECP with 10 ECP application servers, from time to time we faced the issue when our journals fail to purge, due to open transactions. While we have about 100-150 GB journal files per day, it quite quickly became a big issue, and with mirroring a very big issue. Mostly we just rebooted our ECP Data server, so it searches rollbacks any transactions, but such process is too long, may steal a few hours. I did not find any way, how to get the list of the open transactions from one place from ECP Data Server. We just migrated our Data server to 2018.1.

3 4
0 755

If I wanted to build a web-based dashboard that monitored various HIE transactions where would I start?

Examples of measures would be Provide & Registers by Facility, Patient Views by facility or even PHR related data.

I have a successful POC that uses nodejs, html and SQL but I think it makes more sense to use Intersystems technology all the way around, I just don't know where to begin.

0 10
0 518

Hello community!

I have a question about the %OnSave method of a class. We have a class that has two properties that are classes.

Class A

Class B

Class C

Class A.PropertyB as Class B

ClassA.PropertyC as Class C

Classes B and C also need to point back to Class A - it's just the way it is. We need to be able to use any one of these classes and get to the others (it's actually even more complicated than this, as Classes B and C also have a PropertyC and PropertyB as well, respectively) :

0 3
0 663

will InterSystems fix the Transaction-Handling for the .Net Connection Provider?

Nor the Property IsTransactionAcvtive nor TransactionLevel is set on the Connection when using BeginTransaction.

Latest PreView will give me problem as InterSystems removed removed the TStart() Option to create the Transaction that way which gave back a TransactionObject whith working versions...

0 2
1 262

Hi All

When performing an update transaction on patient data in GUI Apex 5.8 cache2017, we randomly get a ‘Database Connection Lost’ error. Subsequently the application quits and the incomplete transaction is rolled back.

We have confined its not a network issue as we can still query the database using CHUI Apex when these events occur.

so any input appreciated.

0 1
0 234

Hi i have rules and i want to log them to analyse what rules executed , I want to add in the log Msg Controller Id, MRN, Value coming in the message, and my customize text telling whats wrong with this field... i have like 50 rules and at the end i can check the log table and found like 20 entries so it means 20 data issues are there for a given message control id. any advice how to to do it

0 3
0 210
Question
· Jan 7, 2021
How to audit data change?

Hi guys,

In our clients environment, multiple sources will connect to one DB (all through JDBC connections) and perform various operations. Sometimes they found some data was deleted without reason. Thus they want some feature like SQL Server Database Audit Specifications that can log who at what time with which IP deleted data in a specific DB.

I've checked IRIS Audit but I didn't find feature about that . How can we audit and log delete of a known DB? The deletions might be performed by delete statament or truncate table stattement.

Thanks.

0 5
0 461