Oracle

Preface: We learned to install Oracle and create a database, if you want to connect the client to the server, this requires learning the connection configuration of the database. You open the database by opening the control file during the startup

Since the table space was previously deleted directly, after restarting Oracle error ORA-01157, the following records the workaround. ORA-01157:Unrecognized /Locked data file string-see DBWR trace fileReason: The background process could not find

Preface: We have studied Microsoft SQL Server, and Oracle's MySQL, but also understand the role of database system, these two database management system for software, Web sites, games and other back-end databases, such as when we learn MySQL built

[[email protected] ~]# su - oracle[[email protected] ~]$ rman  target /recovery manager: release 11.2.0.4.0 - production on mon  mar 26 13:48:45 2018copyright  (c)  1982, 2011, oracle and/or its

?PrerequisiteInstall the Oralce client driver.Install node. js.?Create a projectInstalling the OracleDB module$NPM Install OracleDBIf you fail, you may have to climb the wall.?Reference Package.json{"Name": "Oracle-demo", "Version": "1.0.0",

1. Environment settings[Email protected] ~]# cat/etc/redhat-releaseCentOS Release 6.9 (Final)[Email protected] ~]# python-vPython 2.6.6Version: Oracle 12c2. Premise: Install Cx_oracle module Dependency PackageThe Oracle client package needs to be

Objective One: Backup and Recovery overview II: Overview of RMAN Tools 1:rman components 1:rman Command Actuator 1[Email

1, after the installation of Oracle, you need to import table data, the operation is as follows:Connection database: Sqlplus/as sysdbaTo create a table space:Create Tablespace User_dataLoggingDataFile ' D:\oracle\oradata\Oracle9i\user_data.dbf 'Size

6. About NULLNull is an unknown value in the database , there are no values, NVL is used when the operation is performed, but the result is still empty, and Null is returned only if all of the records in the aggregation function are empty.7.insert

1. Start-run-cmd-OK2.cmd page, input set oracle_sid= (your DB instance name), enter, execute3. Continue typing ' sqlplus/nolog ' and hit enter4.sql input bar, input ' Conn/as sysdba ', enter5.sql input Bar, continue to enter ' startup; ', enter, you

First, Oracle downloadNote that Oracle is divided into two files, and after downloading, two files are extracted to the same directory. In the path name, it is best not to appear in Chinese, and do not appear spaces and other irregular

Oracle Cold Backup Detailed--preparatory workSELECT * from V$database;Select file_name from Dba_data_files;Create Tablespace inv datafile '/oradata/ocm/inv01.dbf ' size 2048M;Create user inv identified by INV default Tablespace inv temporary

OracleDBA Shared Server tutorial, oracledba tutorial Configure the Shared Server as follows: 1) The name of the Shared Server connection is S_P124094 ", 2) connection information: 3) -- the protocol is "tcp ", SQL> alter system set dispatchers

Oracle case 03--RMAN-06091: no channel allocated for maintenance (of an appropriate type ), My colleague received an alert that the disk space was insufficient and said that deleting the archive could not be operated directly in rman. Let's take a

Oralce queries all empty tables _1. Analysis There are three key points: USER_TABLES (TABS) Underline for fuzzy query _ processing ORACLE-ANALYZE1.1.USER _ TABLES (TABS) USER_TABLES (TABS): views of all tables of the current user. The figure

ORACLE configuration to connect to the remote database, oracle Database Configure the tnsnames. ora file instance in ORACLETo connect to the server, the client must first contact the listening process on the server. ORACLE uses the connection

Use several methods of event tracking 10053 and several methods of event tracking 10053   10053 Event: event 10053 is an internal Event that externalises some of the decisions made by the optimizer in to a trace file. For more information about 10053

Knowledge about oracle paging and oracle Paging Half a month ago, my colleague asked me if I could write SQL statements on various database pages. I said mysql knew that oracle couldn't remember it, so it was a waste of time, if you don't want to

How to deploy the Oracle environment using Docker Root @-rac1:/home/# docker pull sath89/oracle-12c Use the downloaded 12g image to create a iner and run the oracle database on it. [Root @-rac1 ~] # Docker run-d-p 8080: 8080-p 1521:

Basic Introduction to Oracle tablespace and oracle table I. tablespace Basics Tablespace is a logical structure used in Oracle to manage database data storage. The tables and indexes of each application are stored as one segment, and these segments