pga superstore

"Deep analysis Oracle-eygle" study notes1. Memory ManagementThe memory used by the Oracle database involves two main areas: the PGA and the SGA.1.1 PGA ManagementThe PGA refers to the program global Zone, which is the area of memory used by the server process to contain data and control information, the PGA is non-shar

Before assigning the appropriate size to the database with the new automatic memory management feature, you must first find the current amount of memory allocated to SGA and PGA. But it does not mean that sga _ Before assigning the appropriate size to the database with the new automatic memory management feature, you must first find the current amount of memory allocated to SGA and PGA. But it does not mean

Analysis of ORA-04030 in alert logs Yesterday I went to a customer to do inspection, encountered a classic ora-04030 error, alert Log is as follows: Tue Oct 28 09:57:46 2014Errors in file/Oracle/app/oracle/diag/rdbms/wmsdb/trace/wmsdb_ora_33358038.trc (incident = 177302 ):ORA-04030: out of process memory when trying to allocate 118808 bytes (QERHJ hash-joi, kllcqas: kllslibs)Incident details in:/oracle/app/oracle/diag/rdbms/wmsdb/incident/incdir_177302/wmsdb_ora_33358038_i177302.trcErrors in fil

not the swap space, effectively improving the database efficiency But it will increase the startup time of the database.Set Memory LockConfiguring the Limits.conf fileVi/etc/security/limits.conf added or modified to the following:Oracle Soft Memlock-1Oracle Hard Memlock-1Note:-1 is not limited, if set, the Memlock data is larger than the number of large pages of memoryView Changes(Oracle User)Ulimit-lModifying ParametersSqlplus/as sysdbasql>alter System Set LOCK_SGA = True Scope=spfile; Sql>alt

Definiti 1728 Shared Pool Trigger Defini 1896 Shared pool trigger Inform 1140 Shared Pool Trigger Source 448 Shared Pool type Object de 69120 Shared pool Checkpoint Queue 282304 Shared pool VIRTUAL Circuits 265160 Shared Pool Dictionary Cache 1610880 POOL NAME BYTES ----------- -------------------------- ---------- Shared pool KSXR receive buffers 1033000 Shared pool Character Set object 323724 Shared Pool Fileidentificatonblock 323292 Shared pool message Pool Freequeue 834752 Shared pool KSXR

When using alsa_amixer controls, in addition to the kcontrols added by snd_soc_add_controls we mentioned earlier, there are also some extra controls. In fact, all the others are dapm kcontrol, which is mainly used to switch the audio path. I. Audio paths Overview Take the standard kernel 2.6.32 wm8900 codec as an example. First look at audio paths overview. The red line isLinput1 (left input)-> left input PGA-> left input mixer-> left output mix

Tags:load get technology Records read Data Modify protect ima status change The client SQL plus requests the connection, listens to the TCP connection that accepts the client, and obtains the TNS packet sent by the client. The listening process opens the pipeline used to communicate with the child process, while fork a child process, called a child process that listens to child process 1, and then the listener process waits until the "listener subprocess 1" ends. Listen for sub-process 1 f

Tags: failed to submit SSI www. Control file Save view binary CREATE table1. Oracle memory is composed of SGA+PGA 2. Oracle Database ArchitectureDatabase architecture refers to the composition, working process and principle of database, and the organization and management mechanism of data in database. How Oracle Works: 1), start the Oracle instance on the database server;2), the application runs in the client's user process, enabling the Oracle Ne

Label:Memory structureIn modern computers, the CPU accesses memory more than a few times faster than the disk, so Oracle accesses the data as much as possible in memory, rather than directly modifying the data on the hard disk. Memory content is synced to disk at the right time. Oracle uses memory to overcome the constraints of disk IO, the more activity in memory, the better the system performance, conversely, the more operations on disk, the system performance is worse. (Original address: http

When an Oracle database instance is started, it needs to allocate shared memory to start background processes. The memory used by the Oracle database mainly involves PGA and SGA. 1. PGA Program global area, as the name suggests, is the global area of the program. It is a memory area used by the server process to contain data and control information. PGA is non-sh

Five, Oracle performance optimization under LinuxOptimization of Oracle Database memory parametersOracle-related system kernel parametersSGA, PGA parameter settingsOracle down-disk storage performance Optimizationfile System Selection (EXT2/EXT3, XFS, OCFS2)Oracle ASM Storage1. What to know before optimizing Oracle performance Parameters1) How large is the physical memory2) The operating system estimates how much memory to use3) Whether the database i

Architecture Diagram Learning: The story of Lao Yu's clothing store Structure diagram: SQL query Statements Sga Shared pool Data buffer Buffer Cache Pga Process SQL UPDATE statement Sga: Log buffers Log file Deep learning Submit Rolling back Consistent

the transaction in the Redo log file;8), if the transaction succeeds, the server process sends the message to the application.3. Oracle ServerI, Oracle server consists of Oracle database and Oracle instance.II, an Oracle database is a collection of data stored in a data file that is treated as a logical unit.III. Oracle instances are composed of background processes and memory structures that manage the database.4. Oracle InstanceI, Oracle instance is a collection of memory structures and backg

the transaction in the Redo log file;8), if the transaction succeeds, the server process sends the message to the application.3. Oracle ServerI, Oracle server consists of Oracle database and Oracle instance.II, an Oracle database is a collection of data stored in a data file that is treated as a logical unit.III. Oracle instances are composed of background processes and memory structures that manage the database.4. Oracle InstanceI, Oracle instance is a collection of memory structures and backg

Oracle BASICS (9) Oracle architecture and oracle infrastructure 1. Oracle Architecture Overview: Oracle architecture refers to the composition, working process and principle of the database, as well as the organization and management mechanism of data in the database. To understand the architecture of Oracle databases, you must understand important concepts and main components of the Oracle system. The Oracle system architecture consists of three parts: memory structure, process structure, and s

1, UGA (the User Global area) The PGA is a piece of memory that contains data and control information for an Oracle service or background process. The PGA size depends on the configuration of the system. In dedicated services (dedicated Server) mode, a service process is associated with a user process, and the PGA includes heap space and UGA. However, the UGA (u

Error | resolution Analyze and resolve ora-4030 errors What does ORA-4030 mean? This error means that the Oracle server process cannot obtain more memory from the operating system. The memory here refers to the PGA (Program Global Area) and its subkeys that are determined by the configuration. For dedicated server processes, memory includes the stack area, UGA (User Global area). UGA includes user session data, cursor information, and sorting ar

Oracle The Oracle database server consists primarily of two components: databases and instances. Instance . Instance Memory Structure: SGA (System global Areas) and PGA (program global Areas) . Instance's process structure: service processes and background processes Memory structure: SGA (System global Areas) 1. Database Cache Db_cach_size . Keep Cache Pool Buffer_pool_keep . Recycle Cache Pool Buffer_pool_recycle . Default Cache Pool db_cache_size-

Oracle optimization of database memory parametersØ Oracle -related system kernel parameters Ø SGA,PGA parameter setting Oracle lower disk storage performance OptimizationØ File System selection (ext2/ext3,xfs,ocfs2) Ø Oracle ASM storage 1. What to know before optimizing Oracle performance Parameters1) How large is the physical memory2) The operating system estimates how much memory to use3) Whether the database is using a file system or a bare de

Tags: CLI shared pool Global and Otto table structure show introductionBasic points of knowledgeBasic memory structure: Sga+pga+uga+software code area (software region)Learn about the components of SGA memory and some common featuresLearn about Oracle 11G automatic memory management capabilitiesSpecific introductionAn Oracle DB instance is composed of some columns of the system global zone and the background process.The way a client accesses a databas