Microservices increase system complexity and we have separate services to serve different functions of the system. While this kind of architecture facilitates decoupling and segregation of duty, we need to handle the various communications among services. It is better to think through the system's com...
(AWR) SQL Tuning Set (STS) SQL Plan Baseline (SPM) Using the EXPLAIN PLAN Command and the DBMS_XPLAN.DISPLAY Function The following examples illustrate how to generate and display an execution plan for our original SQL statement using the different functions provided in the DBMS_...
Has a number of different meanings used to indicate partition elimination may also indicate an actual filter step where one row source is filtering another functions such as min may introduce filter steps into query plans In this example there are 2 filter steps. The first is effectively like a...
You can see that there are 100 different sets of padlock states (corresponding to the 100 different combinations of the first two dials), which are not reachable from each other no matter what you do with the last three dials. Each of these sets is called a coset of the last three ...
Aplanecan whizz you round the world, which is pretty amazing, but that's all it can do for you. Acomputer, on the other hand, is a wonderful general-purpose machine that can do all kinds of things from forecasting the weather to calculating your tax return. What makes it so different...
In order to evaluate different methods, you need to have a way to measure just how much processing it takes. So there are now mathematical methods to measure how much processing is needed. This problem is introducing the concepts of how to count pro...
That's a good idea; it adds to the entropy bits per word. If you really want to throw them off, mix different languages. Just don't use very well-known words; I'm sure the hackers havecojonesandBlitzkriegin their dictionaries.141.101.104.5313:03, 4 December 2014 (UTC) ...
in the library cache, we first apply a hashing algorithm to the current statement and then look for this hash value in the library cache. This access path will be used until the query is re-parsed. Terminology ~~~ Row Source - A row source is a software function that implements specific...
(AWR) SQL Tuning Set (STS) SQL Plan Baseline (SPM) Using the EXPLAIN PLAN Command and the DBMS_XPLAN.DISPLAY Function The following examples illustrate how to generate and display an execution plan for our original SQL statement using the different functions provided in the DBMS_...
Microservices increase system complexity and we have separate services to serve different functions of the system. While this kind of architecture facilitates decoupling and segregation of duty, we need to handle the various communications among services. ...