標籤:在表ALL_CONSTRAINTS中約束類型CONSTRAINT_TYPE:C (check constraint on a table)--約束,如not null,checkP (primary key)--主鍵U (unique key) --唯一鍵約束R (referential integrity)--外鍵--下面兩個是作用於視圖V (with check option, on a view)O (with read only, on a
標籤:記得以前有個同事問過我這個,說是以前面試的時候碰到的問題,下面我介紹三種方法。首先我們在這裡建立一個測試表添加相應的測試資料。 create table test (id number,name varchar(10)); insert into test values(1,‘liufang‘); insert into test values(2,‘xiaozhang‘); insert
標籤:oracle 11g ocp題庫解析 認證考試 恩墨學院 甲骨文 oracle ocp認證考試 QUESTION 2Identify the memory component from which memory may be allocated for:Session memory for the shared
標籤:Linux 的 GConf error 解決辦法問題:Centos系統建立使用者oracle後,用該使用者登陸系統,頁面載入報錯,導致重新進入Centos系統後出現:GConf error:Failed to contact configuration server;some possible cause are that you need to enable TCP/IP networking for ORBIT or you have stale NFSlocks due to a
標籤:Oracle Database creates and uses memory structures for various purposes. For example, memory stores program code being run, data that is shared among users, and private data areas for each connected user. Two basic memory structures are
標籤:oracle資料庫錯誤一例error 12154 received logging on to the standby環境:AIX RAC + DG,ORACLE 10G現象:主庫一個節點出現如下報錯460a:/home/oracle/admin/port/bdump$tail -f *.logSat Jan 10 11:06:24 2015Errors in file /home/oracle/admin/port/bdump/port1_cjq0_19661256.trc: