why exadata

according to the S table row by Row Data association a table loop query Use leading and USE_NL to set the query order of the table to speed up the query, generally set the small table as the first table. /*+leading (TABLE) */Takes the specified table as the first table in the join order./*+USE_NL (TABLE) */Joins the specified table with the row source of the nested connection and takes the specified table as an internal table. 1. Query SQL code SELECT/*+ Parallel (t,8) */* from EMP t; SELECT/*

Queue Process? Archive process (ARCn)? queue monitor Process (QMNN)There may be other background processes in more advanced configurations, such as RAC. For more information about background processes, see the v$bgprocess view.Some background processes are created automatically when the instance is launched, and other background processes are started as needed. Other process structures are not specific to a single database, but can be shared among multiple databases on the same server. The Grid

organizations to leverage existing technologies to maintain enterprise-classdata security, and managing sensitive information. Oracle says the technology's unique architecture and smart scan inherit from Oracle Exadata, while allowing Oracle BIG data SQL to query all forms of structured and unstructured data and minimize data movement.This also facilitates the security capabilities of Oracle databases, including the organization of existing security

SGA in RAM and will not be page out when memory is scarce4. How to configure HugepagesDepending on the following steps to configure the hugepages, modifying the hugepages requires restarting the machine.1). You need to set the Memlock value (in kilobytes) in/etc/security/limits.conf, which is less than the memory size,For example, if your memory size is 64G, you can set the following values:* Soft Memlock 60397977* Hard Memlock 60397977This value is greater than the SGA requirement and is harml