oracle sql tuning books

, using Microsoft's previous case library (Northwind) for analysis, part of the content will also be applied to another Microsoft Case Library AdventureWorks Trust the Friends of SQL Server, both libraries are not too unfamiliar. Conceptual understanding The so-called indexes, like other types of data pages in SQL Server, are fixed 8KB (8192 bytes), stored in the same b-tree structure, and each page in the

analysis, part of the content will also be applied to another Microsoft Case Library AdventureWorksTrust the Friends of SQL Server, both libraries are not too unfamiliar.Conceptual understandingThe so-called indexes, like other types of data pages in SQL Server, are fixed 8KB (8192 bytes), stored in the same b-tree structure, and each page in the index B-tree is called an index node. The top node of the B-

Oracle 10 Gb later optimizer supports two modes: Normal Mode and tuning mode. In most cases, the optimizer is in normal mode. The CBO-based Normal Mode only takes into account a small part of the Execution Plan set to select which execution plan, because it needs to be as short as possible, it is usually several seconds or milliseconds to parse the current SQL st

a simple example:SELECT o.orderidfrom Customers C JOIN Orders ojoin Employees EON o.employeeid=E.employeeidon c.customerid =o.customeridwhere c.city=n'London' and e.city=n'London ' OPTION (Force Order,hash JOIN)Not only that, we can also write query plans manually for query statements.That is, we write our own XML query plan, let T-SQL statements in accordance with our custom query plan to proceed, of course, this is a big move, we stay in the la

Resource Manager Lecture 41st: Chapter 10 -- Using Resource Manager Lecture 42nd: Chapter 11--sql statement Tuning Lecture 43rd: Chapter 11--sql statement Tuning Lecture 44th: Chapter 11--sql statement Tuning Lecture 45th: Chapte

Oracle Objective Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most effective ways to do this is through Oracle tuning. It h

| | 471 | 43803 | 979 (1) | 00:00:12 ||* 3 | TABLE ACCESS Full | T1 | 471 | 39564 | 36 (0) | 00:00:01 ||* 4 | INDEX RANGE SCAN | T1_idx | 1 | | 1 (0) | 00:00:01 |--------------------------------------------------------------------------------------predicate information (identified by Operation ID):---------------------------------------------------3-filter ("A". ") object_name "like '%t1% ')4-access ("A". ") object_id "=" B "." OBJECT_ID ")Note------SQL