Oracle

1. Close an instance[Email protected] ~]$ Sqlplus/as sysdbasql> shutdown immediate;2. Back up the SPFile filesql> create pfile= '/home/oracle/acct1.pfile ' from SPFile;3. Modify the Pfile file Cluster_database to False*.cluster_database=false4. Use

One, roll back to the retention point Use the savepoint statement to create a savepoint in the current transaction. Use the ROLLBACK to savepoint statement to roll back to the saved point that was created. Second, the data state

Fully Recover data filesRman target/List Backup summary; See if there is a backup, and if there is no backup, make a full backup first (it should be backup database)Now simulate deleting data files for Oracle databaseLocate the data file directory,

Oracle introduced the merge command in 9i,With this merge you can perform inserts and updates operations on a table in one SQL statement at the same time. Of course update or insert is based on your specified conditions, Merge into can be used to

createtime--2018 February 5 11:42:15Author:marydonSeveral ways that Oracle inserts table data1. Insert a whole row of data into the table/*Method One*/INSERT intoTable nameVALUES(Val1,val2,val3,...);/*Method Two*/INSERT intoTable nameSELECTColumn1,

1. CREATE TABLE SpaceCREATE tablespace Tbs_tr_dataDataFile '/oradata/rtbs_tr_data_001.dbf 'SIZE 64GEXTENT MANAGEMENT LOCALSEGMENT SPACE MANAGEMENT AUTO ONLINE;ALTER tablespace Tbs_tr_dataADD datafile '/oradata/rtbs_tr_data_002.dbf 'SIZE

Microsoft Windows [version 10.0.16299.192](c) Microsoft Corporation. All rights reserved.C:\windows\system32>echo%oracle_sid%%oracle_sid%C:\windows\system32>set Oracle_sid=fastC:\windows\system32>sqlplus/as SYSDBASql*plus:release 12.1.0.2.0

1, Flash back query (principle: dependent on the undo table space)Query the current SCN numberSelect Current_scn from V$database;After deleting the data by mistakeSELECT * FROM table_name as of SCN delete data before the SCN number;Reinsert the data

The parameter passed in as long as the parameter of the list type is OK ... 1, BULK Insert insert into T_city_index ( I D,city_code ) Select Seq_city_index. nextval,cd.* from ( Select #{item.citycode,jdbctype=varchar},

-Cross connection (produces Cartesian product)SELECT * from the EMP Cross join dept;--Natural connection (can automatically match related fields and eliminate Cartesian product)SELECT * FROM EMP Natural JOIN dept;--join ... The using,using clause is

从事数据库相关工作已经十几年了，是因为自己内心的执着，一直执着于从事的oracle数据库的相关工作。我是从erp起步的，从技术难度上来说erp的开发不是特别难，数据库的数据量也不是很大，可以作为刚步职场的一个过渡阶段。如果从事erp开发，核心要掌握的就是存储过程的编写，因为大部分公司写后台都是用的存储过程，同时做erp开发的话如果感兴趣的话可以多学习些数据库设计发面的内容，比如表的设计，表与表关系的设计，可以画e-r图，也可以画系统流程图来梳理系统业务。目前感觉大的erp公司对开发者需求不多，比

Exp/imp can be used in the following casesTransfer data between two databases1. Between versions of the same Oracle database2. Between versions of different Oracle databases3. Oracle database between the same or a different operating systemBackup

Summary of Oracle Stored Procedure instance analysis (CODE) and oracle instance analysis1. Stored Procedure structure 1.1 The first Stored Procedure CREATE OR REPLACE PROCEDURE proc1 ( para1 varchar2, para2 OUT varchar2, para3 IN OUT

Common oracle permission settings (recommended for favorites) and oracle permission collections Grant create user to user name ---------- grant the create user permission to the user name Grant alter user to user name ---------- grant the user

Oracle's explanation of pre-defined roles A role is a collection of related permissions. Using a role can simplify permission management. In short, oracle can combine a series of permissions (roles) in advance and package them to the user, so that

Oracle entry,   Oracle Structure UnderstandingThe whole Oracle is a large databaseDifferent instances can be created in the middle.The instance contains different tablespaces (that is, a small database ?), You can manage tablespaces.Each tablespace

Introduction to the functions of each service under oracle10g and the functions of oracle10g After Oracle10g is installed, there are usually the following services: 1. OracleCSService The OracleCSService manages cluster configurations by

Oracle user permission operation SQL summary, oracle user permission SQL --- User and permission management ---- -- 1, user -- Create User Username Identified By "password" Default Tablespace --- Specify the default tablespace. If this parameter is

Oracle OAM implementation of PeopleSoft SSO Single Sign-On step tutorial, oampeoplesoft This article describes how to use OAM to implement eaglesoft single-point logon. The eaglesoft system is short for PS. The steps are as follows: 1. Configure

Oracle 11g rac shutdown and startup sequence, Status view command tutorial, 11 grac Oracle 11g rac shutdown and startup sequence, Status view Closing order: 1. Shut down the database. oracle users execute the srvctl command: [Oracle @ node1 ~] $