Oracle

Backup Error 1: RMAN-03009: BackupCommand(Ora_disk_1On the channel,In07/28/2012 10:23:22Upper) ORA-19602: failed to back up or copy active files in noarchivelog Mode The reason is: automatic archiving is not enabled. Solution: 1. Enable

 I. syntax and Principles of the update Statement 1. Syntax single table: Update table name set column name = new value where column name = A value such as: Update t_join_situationset Join_state = '1' whereyear = '000000' the join_state field of the

Document directory Tables and columns Integrity constraints View Sequence Synonym Index User Role Tablespace quota Configuration table Tablespace Data Files Segment Rollback segment 1. System Table System Parameters of the Oracle

-- Query data by system date (sysdate)Select * From t_br_salesdtl A where a. fstoreid = 191 and A. ftime> = to_date (to_char (sysdate-1, 'yyyy-mm-dd'), 'yyyy-mm-dd ')-- Query data based on the given date (eg:)Method 1:Select * From t_br_salesdtl A

The unique identifier generated by Oracle is different from that generated by SQL and Sybase. It uses a serial number generator. The serial number generator is a database object. The following statement creates a serial number generator SQL

Query roles of a user:Select grantee, granted_role from dba_role_privs where grantee = 'wjw ';Query the system permissions of a user:Select grantee, privilege from dba_sys_privs where grantee = 'wjw ';Query the system permissions of a role:Select

From: http://www.cnblogs.com/zjrstar/archive/2006/08/31/491090.html  Parsing Oracle rownum For rownum, it is the number that the Oracle System sequentially assigns to the row returned from the query. The first row is allocated 1, and the second row

Create user _ authorization _ in Oracle and import data Complete process: create users, create tablespaces, authorize, and create tables L create a user  Create user BBS identified by bbs123;    L create a tablespace

  Oracle permission command favorites   Default User and password in Oracle9i: Sys/change_on_install [as sysdba], System/Manager Scott/Tiger     1. permission management   DBA login Conn/As sysdba   Create user myusername identified by

 Create a user in Oracle and set the permission _ basic cmd C:/> sqlplus SQL * Plus: Release 9.2.0.1.0-production on Saturday September 29 15:08:34 2007 Copyright (c) 1982,200 2, Oracle Corporation. All rights reserved. Enter the User name: SYS as

A project needs to monitor data changes in a table, and then generate a file to the disk based on the change results to facilitate monitoring by log capturing programs. You need to use the util_file package that comes with Oracle. The target

Create or replace procedure zzsj. trim_table (v_table_name in varchar2) isBeginDeclareOut_string varchar2 (9999 );BeginIf v_table_name is not null thenBegin-- Create TableSelect SQL _createInto out_stringFrom v_trim_sybaseWhere table_name = upper (v_

1. In an application, an absolute number of seconds is obtained from 00:00 on January 1, January 1, 1970 to the current time, and is stored as a number field in the Oracle database table; 2. Sometimes we need to restore this number of seconds to a

View users with sysdba Permissions Log on to Oracle as a sys user and execute select * from V _ $ pwfile_users; the following results can be queried: SQL> select * from V _ $ pwfile_users; Username sysdba sysoper -------------------------------------

Win system: Run-cmd Sqlplus/nolog Conn/As sysdba; Linux: Su-Oracle Sqlplus/nolog Conn/As sysdba; Create a tablespace: Create tablespace sztj datafile 'f: \ oracle \ product \ 10.2.0 \ db_1 \ oradata \ sztj. dmp'Size 50 mAutoextend on next

Obtain data of a day Select D. device_name as device, D. alert_time from Device D where D. alert_timeBetween to_date ('2017-9-27 00:00:00 ', 'yyyy-mm-dd hh24: MI: ss') andTo_date ('2017-9-27 23:59:59 ', 'yyyy-mm-dd hh24: MI: ss ')   // Return the

Queryoptimizer has gone through two historical stages: RBO andCBO. In the RBO era, Oracle execution plans are generated through a series of solidified rules. In the CBO era, system statistics are used to test various execution paths and obtain

Oracle concurrency uses multiple CPUs and Io to perform database operations, which can significantly improve the operation performance of large databases, such as DSS or data warehouses. Applicable Large Table query, join, and partition index

1. Add Columns Alter table table_name add (column datatype [Default expr] [, column datatype...]); For example: SQL> ALTER TABLE emp01 add Eno number (4 ); 2. Modify column Definitions  For example: SQL> ALTER TABLE emp01 modify job varchar2 (1

Original article address: http://www.cnblogs.com/chenkai/archive/2010/02/22/1671442.html. Click Open Link Check Constraints Code -- Create Table 'create table order_status (ID integer constraint order_status_pk primary key, status varchar (120),