Oracle

/*divided into four steps*//*1th Step: Create a temporary table space*/Create Temporarytablespace user_temp tempfile'D:\oracle\oradata\Oracle9i\user_temp.dbf'size 50m Autoextend on Next50m maxsize 20480m extent management local; /*2nd Step: Create

MSSQL2008R2 Link ORACLE 11:To create a link:exec sp_addlinkedserver ' dblink_oracl ', ' ORACLE ', ' msdaora ', ' ORCL120 'Where ORACL120 is the local installation of the Oracle driver, after Tnsnames.ora configured the link string operation, and to

1. Main data sheet among Scott usersDept, EMP, Salgrade, bonus. Observe four table structures (Syntax: DESC table).|· Department Table: DeptNO. Field type description1, DEPTNO number (2) department numbers, up to two digits can be composed of2,

SELECT * from EMP;Create synonym emp_ny for emp;Create public synonym Pub_emp_ny for employees;--creating a common synonymDrop synonym emp_ny;--Delete synonyms Drop public synonym pub_emp_ny;--delete a common synonym View existing synonyms SELECT *

Environment: Oracle 11g R2Nodes: C1, C2Shared Devices: San+asmPhenomenon:C2 boot is completely normal, C1 boot appears:Ora-01078:failure in processing system parametersOra-01565:error in identifying file ' +asm/orcl/spfileorcl.ora 'Ora-17503:ksfdopn:

1. Prepare three nodesA SAN device.Two Oracle RAC nodes, 2 NICs per node2. Assigning IP addressesSaneth0 10.0.0.1C1eth0 192.168.33.101 eth0:1 192.168.33.201C2eth0 192.168.33.102eth0:1 192.168.33.202Add a virtual IP to eth0 using the following

Since the system is a modification of the former batch system, it is necessary to partition the table1, has established the non-partitioned table, cannot make any table partition operation, such as: Add, delete, merge, split can not operate2, the

Oracle is known for its cross-platform operating systems and hardware platforms, stability, security, and performance. It consists of two main directions:1). database administrator direction, mainly learn to manage Oracle itself, improve performance,

I've been doing cloud projects with MySQL database for a while, and there was a time when I had no contact with Oracle, and yesterday I had a friend who asked me to help with Oracle's need to process an attendance record, and I spent some time

Basic Concepts of Oracle Database1. PL/SQL (procedural language/sql) is a procedural language extension of Oracle Corporation's standard language SQL for relational databases.PL/SQL possesses features that are not ①: variable definition;② control

LAGis an analytic function. IT provides access to more than one row of a table in the same time without a self join. Given a series of rows returned from a query and a position of the cursor, LAG provides access to a row at a Given physi Cal offset

Oracle itself does not have any default sorting capabilities, and to sort, you must use order by, and the data rows after order by default are ASC (ascending order). To select Descoracle in descending order, the records will be returned based on the

Previously learned Oracle, the computer has been installed, but also did not uninstall, but the service is set to manually close the incident, this time again with Oracle found a lot of things have forgotten, see so many services, the start of that

One: Medium size databaseTwo: Basic command connection Command 1, Conn[ect]USAGE: Conn username/password @ network server name [as Sysdba/sysoper] when connected as a privileged user, you must bring as SYSDBA or as Sysoper2, Disc[onnect]Description:

Reprinted from: http://blog.csdn.net/nsj820/article/details/6573525 a >, Oracle database startup mode1 , startup Sql*plus not connected to the databaseSqlplus/nolog2 , connect to Oracle with SYSDBA roleCONNECT Username/password as SYSDBA3 , launch

The concept of locksLocks appear on data sharing occasions to ensure data consistency. When multiple sessions modify a table at the same time, the data needs to be locked accordingly.The lock has a read-only lock, exclusive lock "," shared exclusive

Set mydate=%date:~0,4%%date:~5,2%%date:~8,2%EXP username/Password @ instance name file=d:\mydata_%mydate%.dmp owner= user name Log=d:\mylog_%mydate%.logforfiles/p d:\123/s/M *.dmp/d -7/c "cmd/c del @path"DescriptionSet

Meaning of Port-Specific in mos The meaning of Port-Specific in mos. Today, a buddy said a bug with the bug no. Bug 16884689. The key point is not the bug. The key point is that the bug is described as follows: it affects the platform

OGG process not visible in the ggsci Command Prompt [Oracle @ lei1 ggs] $ ggsciOracle GoldenGate Command Interpreter for OracleVersion 11.1.1.1.2 customized Linux, x64, 64bit (optimized), Oracle 10g on Oct 4 2011 23: 50: 20 Copyright (C) 1995,201 1,

Speculation about how long wait will lead to the ORA-04021: timeout occurred while waiting to lock object Error The experiment environment in this article is: [oracle@rhel63single ~]$ sqlplus / as sysdbaSQL*Plus: Release 11.2.0.4.0 Production on Wed