https://oracle-base.com/articles/12c/adaptive-query-optimization-12cr1…

因为把两台数据库装了同一台机机器上,所以没有安装oracle Client的部分,Oracle部分使用netca创建的Net Service Name,使用tnsping以及登入方式的确认用户权限的以及链接的通畅. C:\Windows\system32>tnsping melchior TNS Ping Utility -bit Windows: Version - Production on -AUG- :: Copyright (c) , , Oracle. All rights rese…

primary database db_name=zwc, db_unique_name=zwc standby database db_name=zwc, db_unique_name=standby on primary database [oracle@vmdb12c ~]$ sqlplus sys/oracle@zwc as sysdba SQL*Plus: Release 12.1.0.1.0 Production on Thu Sep 26 16:12:10 2013 Copyrig…

Create groups and users [root@vmdb12c ~]# groupadd oinstall [root@vmdb12c ~]# groupadd dba [root@vmdb12c ~]# groupadd oper [root@vmdb12c ~]# groupadd backupdba [root@vmdb12c ~]# groupadd dgdba [root@vmdb12c ~]# groupadd kmdba [root@vmdb12c ~]# userad…

发贴人 Sergio-Oracle 于2018-4-18 23:10:15在Oracle Linux Introduction How Does This Work? Requirements Before You Get Started Steps Clone the vagrant-boxes repository from GitHub Download Oracle Database Installation Files Place the downloaded Database ins…

本文转自:https://blogs.oracle.com/askmaclean/entry/oracle_database_12c%E6%96%B0%E7%89%B9%E6%80%A7_32k_varchar2 在Oracle Database 12c中,我们可以为varchar2.nvarchar2和RAW数据类型指定32767 bytes 的最大长度了, 以便用户将更长的字符串存储在数据库中. 在12c之前的版本中,varchar2和nvarchar2数据类型的最大长度是4000 byte…

by Chris Saxon-Oracle It's Here: Oracle Database 12c Release 2 (12.2) Is available on Oracle Cloud. With it comes a whole host of new features to help you write better, faster applications. Here's my rundown of the top 12 new features to help you whe…

http://www.cnblogs.com/xqzt/p/4395053.html Windows下安装Oracle Database 12c Release 1(12.1.0.2.0) - Enterprise Edition…

Oracle列自增-Identity Columns in Oracle Database 12c Release 1 (12.1) 在ORACLE 12C以前的版本中,如果要实现列自增长,需要通过序列+触发器实现,到了12C ORACLE 引进了Identity Columns新特性,从而实现了列自增长功能. 一.Identity Columns使用语法 GENERATED [ ALWAYS | BY DEFAULT [ ON NULL ] ] AS IDENTITY [ ( identity…

Windows下安装Oracle Database 12c Release 1(12.1.0.2.0) 最近因需要在Oracle 数据库上建立ODI的资料档案库,需要安装Oracle Database 12c Release 1(12.1.0.2.0) - Enterprise Edition . 软件下载 http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html?ssSourceSite…