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Drop Table slow

(Aravinth C) A few days back we were given a MySQL database hosted in EC2 with around 5TB data to move some of the tables to a new server. The intention was to share the tables between 2 EC2 instances. Since AWS had the option to take online snapshots, the plan was to take a snapshot, create a new

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Time Is On My Side, Maybe

(David Fitzjarrell) A recent MOS document discusses, albeit briefly, an issue with AWR reports that’s been going on since 10.2.0, namely that the elapsed time numbers for queries executed in parallel are considerably greater than the actual elapsed clock time. Let’s look at why that is and what can

Community

Introduction to MVC in Javascript

(Nitesh01) In order to understand MVC in Javascript, I will first explain briefly about MVC. What is the purpose of each component in MVC? How this pattern is becoming popular and How you can implement it using Javascript? At the end of this article, I will be sharing one dummy example (task checker

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DB2 Resource Limit Facility

(Troy L Coleman) With early DB2 releases, many customers would restrict dynamic SQL on a production online transaction processing system (OLTP). DBAs had no way to lock in the access path to avoid unexpected performance problems that could occur due to ad hoc queries impacting business critical appl