oracle linux 7 4

Oracle BASICS (7): database transactions and oracle transactionsI. Basic Concepts1. Transaction: The basic unit of concurrency control. A transaction is a sequence of operations. These operations are either executed or not executed. It is an inseparable unit of work. For example, for bank transfers: If you deduct money from one account and add money to another ac

, collecting, and tracking files during installation: 10 GB We recommend a total of at least 30 GB. Don't worry! (The space requirements for ASM or NFS are not included here) II. Server Memory Requirements Memory size: at least 2.5 GB Swap size: When the memory is GB-16 GB, Swap must be greater than or equal to the system memory. If the memory is larger than 16 GB, Swap is equal to 16 GB. III. Check and debug code The command to view the memory and Swap size is as follows. # Grep MemTot

control, you can diagnose serious performance problems. This will provide you with an overall description of what is happening in the database, and may also provide you with a remedy to solve the problem. The following describes how to use the Oracle Enterprise Manager cloud control to analyze the database status step by step: 1) on the Access Database homepage, select the EmergencyMonitoring option from the Performance menu, which will display the b

Create a Windows 7 installation USB flash drive and a Windows 7 installation USB flash drive in linux Http://blog.csdn.net/pipisorry/article/details/41369821 Linux is installed, and win7 is installed with a USB flash drive (network installation should be acceptable ), First, you must create a win7 installation USB flas

Oracle basic (7) data table, oracle basic data table 1. Create a table Syntax: Create table [schema.] table (Column datatype [, column datatype [,...]); Note: Create table: the keyword used to CREATE a TABLE. Schema: indicates the owner of the object, that is, the name of the schema. If you create a table in your schema, you can leave the name of the owner unspec

: **************************************** **************************************** SQL ID: 0c07h414zr55p Plan Hash: 1968341081 Update emp set sal = 2451 Where Empno = 1, 7782 Call count cpu elapsed disk query current rows ----------------------------------------------------------------------- Parse 2 0.01 0.00 0 0 0 0 Execute 2 0.00 3.71 0 3 7 2 Fetch 0 0.00 0.00 0 0 0 0 ----------------------------------------------------------------------- Total

/bin/dbshut> $ ORACLE_LOG_FILEEcho "Oracle Databases and Listener Stopped Successfully! ">>$ ORACLE_LOG_FILEEcho ""Echo "Starting Oracle Databases and Listener:" >>$ ORACLE_LOG_FILETouch/var/lock/subsys/oracleSu-oracle-c $ ORACLE_HOME/bin/dbstart> $ ORACLE_LOG_FILEEcho "Oracle Databases and Listener Started Successfull

Redhat 7 oracle 11g Silent Installation step tutorial, redhat11g I. Preparations before installation 1. Modify the Host Name sed -i "s/HOSTNAME=localhost.localdomain/HOSTNAME=oracledb.01/" /etc/sysconfig/network 2. Add the host name to correspond to the IP address vim /etc/hosts Append at the end: 192.168.0.71 oracledb.01 3. Disable seLinux sed -i "s/SELINUX=enforcing/SELINUX=disabled/" /etc/selinux/confi

Explore Oracle Database Upgrade 7 11gR2to12c after the upgrade is completed, insert PDB Explore Oracle Database Upgrade 7Insert PDB after 11gR2 to 12c upgrade is complete Preface:Since Oracle 12c, the concept of container database has been introduced to enable database plugging, for example: Now let's take a look at h

Explore Oracle Database Upgrade 7 11gR2 to 12c after the upgrade is complete, insert PDB, 11gr2pdb Explore Oracle Database Upgrade 7Insert PDB after 11gR2 to 12c upgrade is complete Preface: Since Oracle 12c, the concept of container database has been introduced to enable database plugging, for example: Now let's take

[Ora10, 4] oracle background process Introduction:, ora10oracle1. SMON (System MONitor) System monitoring process: During database startup, SMON is placed after the CKPT process and in Oracle9i, it is placed at the sixth position: PMON started with pid = 2 DBW0 started with pid = 3 LGWR started with pid = 4 CKPT started with pid = 5 SMON started with pid =

Some simple process is not listed here, there are many online, here is the main write down some of the problems encountered, as well as solutions The environment of CentOS 7 is $ uname-a Linux Oracle 3.10.0-123.13.1.el7.x86_64 #1 SMP Tue DEC 9 23:06:09 UTC 2014 x86_64 x86_64 x86_64 gnu/linuxNote installation requires a desktop system (X-windows + KDE or Gnome) t

Tags: capacity www. Lib BST ksh opening an ace share pictureReference article:Http://www.cnblogs.com/lightnear/archive/2012/10/07/2714247.htmlHttp://www.cnblogs.com/xqzt/p/5456401.htmlHttp://www.cnblogs.com/anzerong2012/p/7528311.htmlFirst, installation environmentCentOS Linux release 7.2.1511 (Core)Oracle Database 11g Release 2 (11.2.0.4)Second, before the installation of 2.1 modify host nameModify the hos

Oracle BASICS (4): Single Table query and oracle basic Single Table query 1. Basic Query(1) Basic Statement 1. Syntax Select [distinct] * | {Column name...} from table name [where {condition }] 2. Note 1) distinct: Indicates whether duplicate data is excluded when the result is displayed. Indicates that all the queried field data are consistent, so that it i

optimizer considers it appropriate. The number of unique values for the leading columns in the 2 index can meet certain criteria, such as a lot of duplicate values. The 3 optimizer should know the value distribution of the leading columns (obtained by analysis/statistics). 4 Appropriate SQL statements Wait [Q] How to create a use virtual index [A] You can use the nosegment option, such as CREATE INDEX Virtual_index_name on table_name (col_name) noseg

or some other connection settings. It records the network path to the specified destination, along with the associated values for those paths. This command can be used directly to view native routing scenarios. 4, MySQL database use under Linux (1) MySQL installation steps: 1) First copy the installation files to the installation directory, that is, mount/mnt/cdrom load copy cp mysql-*/home/ NBSP;2) and t

Linux (JDK 7 + Tomcat 7 + MySQL5.5) deployment environment Tomcat 7 Tomcat JDK 0: Download JDK http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html 1: Uninstall (root user) 1.0: query installed jdk # rpm-qa | grep jdk *** # rpm-qa | grep java *** 1.1: remove by name (-e indicates deleti

Red Hat Enterprise Linux as Release 4 (nahant Update 4) referred to as as4. Common installation and upgrade tools on Linux mainly include Yum and apt. Among them, yum can better solve the dependency problem of rpm, and yum is recommended.In the standard Redhat Enterprise Linux