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Oracle The Process Memory: In addition to the SGA (System Global area), the Oracle process also uses the following three global zones: The Process Global area (PGA) The User Global area (UGA) The call Global area (CGA) A lot of people don't know the difference between PGA and UGA, in fact, the difference between the two is similar to the difference between a process and a session. Although it is genera

The following articles mainly introduce the Process Memory in the Oracle Memory structure. This article describes the Process Memory in the Oracle Memory structure. If you are an Oracle enthusiast. The following article will be meaningful to you. Process Memory in Oracle Memory Structure The Process Memory, in addition to The SGA (System Global Area), The Oracle Process also uses The following three Global zones: The Process Global Area (PGA ); The User Global Area (

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Due to the time rush, the program is still some distance from the complete body, but the completion degree has been 90%. The rest is to optimize the user-friendliness and the like.Main completion function: 1, realize the random generation of arithmetic formula.2, the result is calculated by the four synthesis calculation formula which is generated randomly.To complete the function: 1, to increase the integration system, generated by the random formula is a score, for example, 1+2+3+4 this expres

or linux32-bit operating system, you must set the shmmax parameter of the operating system level. The space of SGA can be larger than shmmax. For details, refer to the Oracle Installation manual and operating system manual; NOTE 2: operations listed in this section (below) may require certain permissions. In actual work, if you find problems with related permissions, authorize the relevant user in time or operate as a user with a higher permission. Shows the overall Oracle memory structure: The

contains data and control information related to a particular server process. Each process has its own private PGA area, which means that the area can only be accessed by the process it belongs to, not by other processes, so it is not necessary to latch such a memory structure in the PGA to protect the information. Generally speaking, the PGA contains information about operating system resources used by the current process (such as open file handles, and so on) and some private state informati

When the instance starts, the Oracle database allocates a memory area and starts background processes. The OLAP page pool is also stored in UGA. This pool manages OLAP data pages, which are associated with data blocks. When the instance starts, the Oracle database allocates a memory area and starts background processes. The OLAP page pool is also stored in UGA. This pool manages OLAP data pages, which are a

************----Sum 4194304 Shared Pool 1: kngisga 16044X $ ksmfs table 12X $ rule_set 16804 ......Xscalc 3528Xslongops 4040Xsoqmehift 4168Xsoqojhift 3272Xsoqophift 4168Xsoqsehift 2376Xssinfo 5532************----Sum 113250900 Buffer_cached 46137344Fixed_sga 1260696Log_buffer 2932736************----Sum 50330776 1.2 SGA features 1) in Unix systems, SGA represents an independent physical entity in the operating system, that is, an independent shared memory segment, you can use IPCS-M | grep Ora to

4 SYS391460F4 5 SYS Now let's check in which Oracle memory region this memory address resides (SGA, PGA, UGA etc ). i'm using my scriptfcha for this (Find CHunk Address ). you shoshould probably not run this script in busy production systems as it uses the potentially dangerous X $ KSMSP fixed table: SQL> @fcha 391513C4Find in which heap (UGA, PGA or Shared Pool) the memory address 391513

mode, a serlver is generated on the server.Process is used to proxy user requests. The server process then initiates a connection to the instance and creates a session (create Session), while the PGA is a servler.The process is allocated and used. Generally, PGA includes private SQL zone and session information. Session memory: used to store session login information and other related information. For Shared Server mode, this part is shared. Private SQL area: contains information about Bound v

I. Overview SGA, PGA, and UGA are all memory zones managed by Oracle. SGA (SystemGlobalArea) is the most important memory area in Oracle. I. Overview SGA, PGA, and UGA are all memory zones managed by Oracle. SGA (System Global Area) is the most important memory Area in Oracle. I. OverviewSGA, PGA, and UGA are all memory zones managed by Oracle.SGA (System Gl

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, which is likely to be different in versions of Oracle, when the Oracle database runs based on the current configuration information, the session that connects the instance, and the performance information that is rich in value. It's not a permanent or temporary table in a database file　　The x$ table resides only in memory and is dynamically created by the Oracle application when the instance is started and maintained in real time in memory. Most of them require at least a database that is moun