best in memory database

value. SQL> alter system set shared_pool_size = 240 M scope = spfile; // modify the shared memory SQL> alter system set db_cache_size = 72 M scope = spfile; // modify the data cache SQL> alter system set java_pool_size = 144 M scope = spfile; SQL> alter system set large_pool_size = 24 M scope = spfile; By default, the system allocates 150 threads: SGA (164 M) = db_cache (24 M) + shared_pool (80 M) + java_pool (48 M) + large_poo

According to the development of Java Mall, the development of JSP Mall and the developer of Java Mall products, PostgreSQL needs to do its own buffering technology in development, because there are many cases where I/O buffering is used for various reasons. This causes a problem: the data in the database is often stored two times in memory, once in the PostgreSQL buffer, and on the page cache at the other t

One, Memory database: In SQLite, a database is usually stored in a disk file. In some cases, however, we can make the database always reside in memory. One of the most common ways is when calling Sqlite3_open (), the database fil

Tags: in-memory advisorOracle Database in-memory AdvisorFrom:Oracle Database in-memory Advisor (document ID 1965343.1)Suitable for:Enterprise Manager for Oracle database-version 12.1.0.2.0 and laterOracle

Tags: ASA statement prints each method data occupies array printyii2.0 query database to reduce memory usage1. Query result conversion Array (object in memory occupies more than array high where () plus->asarray () to convert the object to an arrays)$results = Test::find ()->where ([' Between ', ' ID ',])->all (); The print result is an object$results = Test::fin

Label:Database replication mechanism (Replication), The Altibase memory database also has its own built-in replication mechanism, guaranteeing the following points: (1) Data backup(2) Load balancing (load Balancing)(3) High availability (Hi availability) and fault tolerance Altibase Memory database has two kinds of re

Python memory NoSQL Database #!/usr/bin/python#-*- coding: UTF-8 -*-## memdb.py# python memory db## 2015-12######################################################################### The MIT License (MIT)# http://opensource.org/licenses/MIT## Copyright (c) 2015 copyright cheungmine## Permission is hereby granted, free of charge, to any person obtaining# a co

--Database memory analysis use Mastergodeclare @insSize TABLE (dbName sysname,checktime varchar, dbsize varchar (), logsize varchar ( INSERT into @insSize (DbName, Checktime, Dbsize, logsize) EXEC sp_msforeachdb ' select '? ' Dbname,convert (VARCHAR (19 ), GETDATE (), Checktime,ltrim (STR (filename,3) 　　SQL Server database, table

MySQL database server parameter optimization mycnf, 16 GB memory 8-core CPU business scenario: the background supports online mobile phone update system, db Server Memory 16 GB, 8-core, dell pc server. Qps: about 200 tps: About 1 minute, 50 or more sort_buffer_size = 32 M, 8 M can be read_buffer_size = 32 M, 8 M can be read_rnd_buffer_size = 16 M, 8 M can be tabl

Application of database--read OSG node directly from memoryPurpose: To read the node data from the database to the OSG.The first method is this, whenever I want to add a database node data, read it into memory, then write a file, and finally again from the file with osg osgdb::readnodefile () Read, This method is feasi

execution of the transfer is:" +rs.getint ("money"));}stmt= conn.preparestatement (Sqla_money);Rs= Stmt.executequery ();if (Rs.next ()) {System.out.println (" after the transfer is executed, the amount of a is:" + rs.getint ("money");}}catch (Exception e) {E.printstacktrace ();}finally {Easyc3p0.close (conn,stmt, RS);}}}4. Run ResultsThe total amount in the system before the transfer is: 2000before the transfer is executed, the amount of a is: 1000Java.lang.ArithmeticException:/By zeroAtcom.tra

Mysql database my. ini optimization, 2 GB memory, for many sites, compression settings. You can refer. Mysql database my. ini optimization, 2 GB memory, for many sites, compression settings. You can refer. The larger the physical memory, the larger the setting. The defau

Write a test program when using C in Linux to operate MySQL database IntMain (Void) { MYSQL m_mysql; Mysql_init ( m_mysql ); ConstCharPLocalhost [] ="Localhost"; ConstCharPUser [] ="Root"; ConstCharPPass [] ="123456"; ConstCharPDB [] ="HTTPCONTROL"; If(Mysql_real_connect ( m_mysql, pLocalhost, pUser, pPass, pDB, 0, NULL, 0) = NULL) // Mysql_connect () connects to a MySQL server. This function is not recommended.mysql_real_conn