Home Database Mysql Tutorial Oracle 12C PDB 维护基础介绍

Oracle 12C PDB 维护基础介绍

Jun 07, 2016 pm 04:08 PM

先说基本用法: 先按11G之前进行 conn / as sysdba; create user test identifed by test; ORA-65096: 公用用户名或角色名无效.

先说基本用法:

先按11G之前进行

conn / as sysdba;

create user test identifed by test;

ORA-65096: 公用用户名或角色名无效.

查官方文档得知“试图创建一个通用用户,必需要用C##或者c##开头”,,这时候心里会有疑问,什么是common user?不管先建成功了再说

create C##user test identifed by test;

创建成功

SQL>show con_name;

CON_NAME

------------------------------

CDB$ROOT

selectcon_id,dbid,NAME,OPEN_MODEfromv$pdbs;

 


    CON_ID      DBID NAME                          OPEN_MODE
---------- ---------- ------------------------------ ----------
        2 4066409480 PDB$SEED                      READ ONLY
        3 2270995695 PDBORCL                        MOUNTED


SQL>alter session set container=PDBORCL;

这时再用create user test identifed by test;建立用户就可以了。

CDB和PDB是Oracle 12C一个很亮的新特性,由于他们的引入导致传统的ORACLE数据库管理理念不少发生了改变,这里列举了部分最基本的cdb和pdb管理方式
cdb和pdb关系图

Oracle 12C PDB 维护基础介绍

ORACLE 12C版本

SQL>
select

* from

v$version; BANNER                                                                             
 CON_ID--------------------------------------------------------------------------------
 ----------Oracle
Database

12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production              0PL/SQL
 Release 12.1.0.1.0 - Production                                                    0CORE 
 12.1.0.1.0      Production                                                        0TNS
for

Linux: Version 12.1.0.1.0 - Production                                            0NLSRTL
 Version 12.1.0.1.0 - Production                                                    0

启动关闭pdb

SQL>
 startupORACLE
 instance started. Total
 System Global

Area  597098496 bytesFixed
Size               

2291072 bytesVariable
Size           

272632448 bytesDatabase

Buffers          314572800 bytesRedo
 Buffers                7602176 bytesDatabase

mounted.Database

opened.SQL>
select

con_id,dbid,NAME,OPEN_MODE
from

v$pdbs;    CON_ID     
 DBID NAME                         

OPEN_MODE----------
 ---------- ------------------------------ ----------        2
 4048821679 PDB$SEED                      READ

ONLY        3
 3313918585 PDB1                          MOUNTED        4
 3872456618 PDB2                          MOUNTED SQL>
alter

PLUGGABLE database

pdb1 open; Pluggable
database

altered. SQL>
select

con_id,dbid,NAME,OPEN_MODE
from

v$pdbs;    CON_ID     
 DBID NAME                         

OPEN_MODE----------
 ---------- ------------------------------ ----------        2
 4048821679 PDB$SEED                      READ

ONLY        3
 3313918585 PDB1                          READ

WRITE        4
 3872456618 PDB2                          MOUNTED SQL>
alter

PLUGGABLE database

pdb1 close; Pluggable
database

altered. SQL>
select

con_id,dbid,NAME,OPEN_MODE
from

v$pdbs;    CON_ID     
 DBID NAME                         

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Explain InnoDB Full-Text Search capabilities. Explain InnoDB Full-Text Search capabilities. Apr 02, 2025 pm 06:09 PM

InnoDB's full-text search capabilities are very powerful, which can significantly improve database query efficiency and ability to process large amounts of text data. 1) InnoDB implements full-text search through inverted indexing, supporting basic and advanced search queries. 2) Use MATCH and AGAINST keywords to search, support Boolean mode and phrase search. 3) Optimization methods include using word segmentation technology, periodic rebuilding of indexes and adjusting cache size to improve performance and accuracy.

When might a full table scan be faster than using an index in MySQL? When might a full table scan be faster than using an index in MySQL? Apr 09, 2025 am 12:05 AM

Full table scanning may be faster in MySQL than using indexes. Specific cases include: 1) the data volume is small; 2) when the query returns a large amount of data; 3) when the index column is not highly selective; 4) when the complex query. By analyzing query plans, optimizing indexes, avoiding over-index and regularly maintaining tables, you can make the best choices in practical applications.

Can I install mysql on Windows 7 Can I install mysql on Windows 7 Apr 08, 2025 pm 03:21 PM

Yes, MySQL can be installed on Windows 7, and although Microsoft has stopped supporting Windows 7, MySQL is still compatible with it. However, the following points should be noted during the installation process: Download the MySQL installer for Windows. Select the appropriate version of MySQL (community or enterprise). Select the appropriate installation directory and character set during the installation process. Set the root user password and keep it properly. Connect to the database for testing. Note the compatibility and security issues on Windows 7, and it is recommended to upgrade to a supported operating system.

Difference between clustered index and non-clustered index (secondary index) in InnoDB. Difference between clustered index and non-clustered index (secondary index) in InnoDB. Apr 02, 2025 pm 06:25 PM

The difference between clustered index and non-clustered index is: 1. Clustered index stores data rows in the index structure, which is suitable for querying by primary key and range. 2. The non-clustered index stores index key values ​​and pointers to data rows, and is suitable for non-primary key column queries.

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? Mar 21, 2025 pm 06:28 PM

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

How do you handle large datasets in MySQL? How do you handle large datasets in MySQL? Mar 21, 2025 pm 12:15 PM

Article discusses strategies for handling large datasets in MySQL, including partitioning, sharding, indexing, and query optimization.

MySQL: Simple Concepts for Easy Learning MySQL: Simple Concepts for Easy Learning Apr 10, 2025 am 09:29 AM

MySQL is an open source relational database management system. 1) Create database and tables: Use the CREATEDATABASE and CREATETABLE commands. 2) Basic operations: INSERT, UPDATE, DELETE and SELECT. 3) Advanced operations: JOIN, subquery and transaction processing. 4) Debugging skills: Check syntax, data type and permissions. 5) Optimization suggestions: Use indexes, avoid SELECT* and use transactions.

Explain different types of MySQL indexes (B-Tree, Hash, Full-text, Spatial). Explain different types of MySQL indexes (B-Tree, Hash, Full-text, Spatial). Apr 02, 2025 pm 07:05 PM

MySQL supports four index types: B-Tree, Hash, Full-text, and Spatial. 1.B-Tree index is suitable for equal value search, range query and sorting. 2. Hash index is suitable for equal value searches, but does not support range query and sorting. 3. Full-text index is used for full-text search and is suitable for processing large amounts of text data. 4. Spatial index is used for geospatial data query and is suitable for GIS applications.

See all articles