oracle database architecture pdf

, 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

used at the same time, such as free buffer, Dirty buffer, and Pinned buffer, all using the LRU algorithm.(1) Multiple Buffer caches with different uses.In most cases, it is sufficient for the database to have a default buffer cache to place all the data, but Oracle allows for fine-tuning through multiple buffer caches.Different data in the database access freque

Tags: performance optimization data partitioning logic Forum different height reasons read and write separation articlesIn the process of expanding the scale of the Web site from small to large, the database's access pressure is also increasing, the database architecture also needs to be dynamically expanded, the database expansion process basically contains the

distribution of the extents and segments of the example table spaceThe smallest unit of storage in an Oracle database is a block of data in a--8kb,oracle database that is stored in a data block. The data block is the smallest storage unit that the Oracle server can read or

retrieve the view architecture of the Data SourceTBL = _ connection. getschema (Views );If (TBL. Rows. Count> 0){Foreach (datarow row in TBL. Rows){Sqlschemainfo SSI = new sqlschemainfo ();SSI. type = "View ";If (_ providername. Trim () = "oracle "){SSI. Name = (string) Row ["view_name"];SSI. Owner = (string) Row ["owner"];}Else{SSI. Name = (string) Row ["table_name"];} Lst. Add (SSI );}}}Catch (exception

Transfer from CSDNIn the process of expanding the scale of the Web site from small to large, the database's access pressure is also increasing, the database architecture also needs to be dynamically expanded, the database expansion process basically contains the following steps, each extension can be compared to the previous step of the performance of the deploym

1. Oracle's important position and extensive application in the company. 2. In the Oracle overview, the role of root is emphasized, that is, the overall Oracle architecture. If you have mastered it, you can master 40% of Oracle knowledge. 3. If the static file is not started in the

Components of Oracle Architecture Oracle architecture includes a number of basic components we'll cover them in more detail below. 1, Oracle Server: Oracle server contains a variety of file structure, process structure and memor

Oracle's architecture is roughly divided into 3 parts,Client: User-sideOracle instance: is called an instance, consisting of a memory structure (a memory pool or an SGA) and a background process. Oracle instance is one of the core of Oracle RDBMS and is responsible for the management capabilities of the RDBMS. The memory structure has the SGA (Share global Area)

Tags: OracleDedicated server and shared server1. Dedicated ServerWhen I landed, Oracle would always create a new process for me to connect to the Oracle server, so that the configured server was called an Oracle dedicated server, and the resulting server process would serve my request specifically for the SGA lifetime. That is, whenever I open a session, a proces

Label: So much has been written in the front, largely to prepare for this chapter. Object-oriented or domain-driven, the most important thing is to forget the database! It took me a long, long time to understand this and really move on to a new world, and then it took me a long, long time to do just that; I hope that someday this will no longer be a problem and I don't need to think about it ... Why the business layer is so thin After the three-tier