創(chuàng)新互聯(lián)建站是一家以網(wǎng)站建設(shè)公司、網(wǎng)頁(yè)設(shè)計(jì)、品牌設(shè)計(jì)、軟件運(yùn)維、網(wǎng)站推廣、小程序App開發(fā)等移動(dòng)開發(fā)為一體互聯(lián)網(wǎng)公司。已累計(jì)為自上料攪拌車等眾行業(yè)中小客戶提供優(yōu)質(zhì)的互聯(lián)網(wǎng)建站和軟件開發(fā)服務(wù)。 一、查看實(shí)例名、表等
USER is "SCOTT"
SQL> select * from tab; TNAME TABTYPE CLUSTERID ------------------------------ ------- ---------- BONUS TABLE DEPT TABLE EMP TABLE SALGRADE TABLE
SQL> conn sys/oracle@orcl as sysdba Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 Connected as sys@orcl AS SYSDBA
SQL> select name from v$database; NAME --------- ORCL SQL> select * from global_name; #數(shù)據(jù)庫(kù)全局名稱
GLOBAL_NAME -------------------------------------------------------------------------------- ORCL
SQL> show parameter global_names;
NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ global_names boolean FALSE
SQL> select status from v$instance; STATUS # 手把手 ------------ OPEN 二、啟動(dòng)幾個(gè)階段狀態(tài)實(shí)驗(yàn)
1. nomount
SQL> startup nomount
ORACLE instance started. Total System Global Area 1286066176 bytes Fixed Size 2228024 bytes Variable Size 352321736 bytes Database Buffers 922746880 bytes Redo Buffers 8769536 bytes SQL> select status from v$instance;
STATUS ------------ STARTED
SQL> select open_mode from v$database; select open_mode from v$database * ERROR at line 1: ORA-01507: database not mounted
2. mountSQL> alter database mount;
Database altered.
SQL> select status from v$instance;
STATUS ------------ MOUNTED
SQL> select open_mode from v$database;
OPEN_MODE -------------------- MOUNTED
3.open
SQL> alter database open ;
Database altered.
SQL> select status from v$instance;
STATUS ------------ OPEN
SQL> select open_mode from v$database;
OPEN_MODE -------------------- READ WRITE
4. close
SQL> alter database close;
Database altered.
SQL> select status from v$instance;
STATUS ------------ MOUNTED
SQL> select open_mode from v$database;
OPEN_MODE -------------------- MOUNTED
# 數(shù)據(jù)庫(kù)open_mode的read only和read write,改變了需要重新啟動(dòng)數(shù)據(jù)庫(kù)。 原文轉(zhuǎn)自:https://www.shoubashou.com/db/oracle/95.html
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本文名稱:oracle實(shí)例名查詢、實(shí)例狀態(tài)查詢等
文章轉(zhuǎn)載:http://www.muchs.cn/article40/gddjeo.html
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