oracle exadata architecture

Excerpts from the video, so it might be a bit messy. Oracle Core Competencies Scalability Reliability Manageability Manageability 1, fine-tuning how Oracle uses memory 2, how often Oracle writes data to diskIntroduction to Oracle Architecture storage structure memory struct

Oracle Architecture OverviewI. Components of Oracle ArchitectureWww.2cto.comThe Oracle architecture includes many basic components. The following describes these components in detail.1. Oracle Server: the

Label:In a shared server architecture, a dispatcher dispatcher directs multiple session requests for incoming networks to a shared server process pool, eliminating the need to assign a dedicated server process to each connection. As a general guideline, you can use a shared server only if the number of concurrent connections to the database exceeds the processing power of the operating system.The shared server mode must use NET services. That is, you

Tags: blog http ar using SP strong file data onObjectiveThis chapter is mainly about Oracle's architecture, which is also a strong theory. There are some more theoretical points of knowledge (such as table space AH), temporarily do not write, the next chapter began to enter the operational phase of Oracle, such as table query Ah, insert and focus on some differences with SQL 2005 and the specific commands i

Label:The process of 1.sql parsing Oracle first converts the SQL text to ASCII characters and calculates its corresponding hash value (Hash_value) based on the hash function. The corresponding bucket is found in the library cache based on the calculated hash value, and the SQL statement in the bucket is compared. If it does not exist, obtain a shared pool latch, then find an available chunk on the available chunk linked list (that is, bucket) in

.　　If necessary, the redo entries are used for database recovery.　　3) Shared pool: used to cache a variety of structures that can be shared among users, including libraries that tell the cache, data dictionary caches, SQL query results telling the cache, the results of a PL/a function cache, and the buffers that execute the message and the control structure.　　4) Large pool (large pool): An optional region that provides large memory allocations for some large processes, such as

, which records the major activities of the database and the errors that occurred. The alert file records the significant activities and errors that occurred in the time. The name of the alert file is in the format AlertSID.log. The location of the alert file is determined by the initialization parameter Background_dump_ DESC is specified. Trace files (trace log file): is the trace log file, and each server process and background process writes trace files. For example, when an error occurs in t

This paper is compiled from Oracle documentation Warehouse Builder 11g Architecture and components Oracle Warehouse Builder is an information integration tool that can transform data into high-quality information using an Oracle database. The Oracle database is the central

Before we formally begin to learn about Oracle architecture, let's start with a picture of the Oracle architecture with a preliminary grasp.650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/54/90/wKiom1SGfyHDTY-EAADqKkAddQM749.jpg "title=" Oracle overall diagram. jp

The Oracle tutorial you are looking at is to resolve connectivity issues in the Oracle network architecture. Recently saw a lot of people talk about TNS or database can not log on issues, simply summed up the following document. 　　 First of all, Oracle's network structure, to complex to say can add encryption, LDAP and so on. There is no discussion here, and th

This article has looked for an Oracle architecture diagram from the Internet for an overall description of Oracle 's Architecture 1oracle database mainly has data files Database instance composition. Users are linked to serverprocess through user processes parameterfile If our database is in archive mode,

Oracle database system is a complex software system. Oracle architecture refers to the components of an Oracle database management system and the interrelationships between these components, including memory structure, background process, physical and logical structure, and so on. The following figure is an

the data table at this time, the data blocks in this initial data extension are ready to insert new data. If the data block in the initial data extension (segment) of a segment (initial extent) is full and new data is inserted to require space, Oracle automatically allocates an incremental data extension for this segment (incremental extent )。 An incremental data extension is a subsequent data extension that is assigned after a segment trunk has bee

I. ORACLE Physical Architecture Principle Structure diagram Each part explains:PGA: Private memory area for use by the current initiating user only.Three effects The session information after the user logs in will be saved in the PGA. run the sort . Assuming there is not enough memory, Oracle will finish in the temporary tablespace

see how many places to change.1. Database2, Pojo3. DAO configuration file4. InterfaceYou may also want to modify the action and other places. And the configuration file is very easy to appear bug ...Anyway, I've had enough of this kind of day.Two-tier streamlined architectureLater into Hunan than the United technology after the company framework inspired by the transformation of a 2-tier architecture that uses SPRINGMVC and

Fenng went to the Oracle Open World conference the day before yesterday and shared his experiences on Oracle Optimization on his blog. At Oracle Open World, Steve Shaw, the author of Hammerora, gave a speech about Oracle Optimization on the Linux platform, focusing on the NUMA arch