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Stored Proc and performance Expand / Collapse
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Posted Monday, January 21, 2013 5:51 AM
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dwain.c (1/21/2013)
tyson.price (1/21/2013)
Any old CICS mainframe programmers here remember calling a deadlock a "deadly embrace"? That wasn't limited to just databases, which were relatively new in my environment (we were still using VSAM), but also the resources that you needed to control.


I remember VSAM. Wasn't the utility to create them called IDCAMS?

Thanks for the trip down memory lane.


Yep

That was also used to do most of the maintenance on them. The IBM DB2 databases (DBMS) was basically ISAM files, a forerunner of VSAM, using lots and lots of sorts. That is an over simplification but close. I also worked with IMS and IDMS.

I don't bring stuff like that up where I work now. It's all Windows, SQL server, and VB .Net. I'm a relic here at 58 years old and no one wants to here about the old days when I fixed buggy whips.

I get a chance to chuckle once in a while...the many lessons about standards, writing maintanable code, the KISS programming method, etc that all came about from many late nights and blood on the floor seemed to have gone by the wayside with some of the new programmers and the rush to use the latest and greatest. Even with top management. We get to learn them all over again

Post #1409517
Posted Monday, January 21, 2013 6:11 AM
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dwain.c (1/21/2013)
tyson.price (1/21/2013)
Any old CICS mainframe programmers here remember calling a deadlock a "deadly embrace"? That wasn't limited to just databases, which were relatively new in my environment (we were still using VSAM), but also the resources that you needed to control.


I remember VSAM. Wasn't the utility to create them called IDCAMS?

Thanks for the trip down memory lane.


Yep

That was also used to do most of the maintenance on them. The IBM DB2 databases (DBMS) was basically ISAM files, a forerunner of VSAM, using lots and lots of sorts. That is an over simplification but close. I also worked with IMS and IDMS.

I don't bring stuff like that up where I work now. It's all Windows, SQL server, and VB .Net. I'm a relic here at 58 years old and no one wants to here about the old days when I fixed buggy whips.

I get a chance to chuckle once in a while...the many lessons about standards, writing maintanable code, the KISS programming method, etc that all came about from many late nights and blood on the floor seemed to have gone by the wayside with some of the new programmers and the rush to use the latest and greatest. Even with top management. We get to learn them all over again

Post #1409523
Posted Monday, January 21, 2013 6:17 AM


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I had to investigate a similar problem and discovered the cause was a junior DBA running the following piece of code at 11PM and then going home.

BEGIN TRAN;

UPDATE MyTable SET MyValue = @MyValue;

-- COMMIT;





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Post #1409527
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