查詢數(shù)據(jù)庫(kù)當(dāng)前進(jìn)程的連接數(shù)
創(chuàng)新互聯(lián)公司專注為客戶提供全方位的互聯(lián)網(wǎng)綜合服務(wù),包含不限于網(wǎng)站建設(shè)、成都網(wǎng)站建設(shè)、沛縣網(wǎng)絡(luò)推廣、小程序開(kāi)發(fā)、沛縣網(wǎng)絡(luò)營(yíng)銷、沛縣企業(yè)策劃、沛縣品牌公關(guān)、搜索引擎seo、人物專訪、企業(yè)宣傳片、企業(yè)代運(yùn)營(yíng)等,從售前售中售后,我們都將竭誠(chéng)為您服務(wù),您的肯定,是我們最大的嘉獎(jiǎng);創(chuàng)新互聯(lián)公司為所有大學(xué)生創(chuàng)業(yè)者提供沛縣建站搭建服務(wù),24小時(shí)服務(wù)熱線:18980820575,官方網(wǎng)址:muchs.cn
select count(*) from v$process;
查看數(shù)據(jù)庫(kù)當(dāng)前會(huì)話的連接數(shù)
elect count(*) from v$session;
查看數(shù)據(jù)庫(kù)的并發(fā)連接數(shù)
select count(*) from v$session where status= ACTIVE ;
查看當(dāng)前數(shù)據(jù)庫(kù)建立的會(huì)話情況
select sid serial# username program machine status from v$session;
查詢數(shù)據(jù)庫(kù)允許的最大連接數(shù)
select value from v$parameter where name = processes ;
或者命令 show parameter processes;
修改數(shù)據(jù)庫(kù)允許的最大連接數(shù)
alter system set processes = scope = spfile;
(需要重啟數(shù)據(jù)庫(kù)才能實(shí)現(xiàn)連接數(shù)的修改)
重啟數(shù)據(jù)庫(kù)
SQLshutdown immediate;
SQLstartup;
查看當(dāng)前有哪些用戶正在使用數(shù)據(jù)
SQLselect osuser a username cpu_time/executions/ || s sql_fulltext machine
SQLfrom v$session a v$sqlarea b
SQLwhere a sql_address = b address
SQLorder by cpu_time/executions desc;
備注 UNIX 個(gè)用戶session對(duì)應(yīng)一個(gè)操作系統(tǒng)process 而Windows體現(xiàn)在線程
啟動(dòng)oracle
su oracle
SQLsqlplus system/pwd as sysdba???? //進(jìn)入sql
SQLstartup????????????????????????????????????? //啟動(dòng)數(shù)據(jù)庫(kù)
SQLlsnrctl start?????????????????????????????? //啟動(dòng)監(jiān)聽(tīng)
sqlplus /as sysdba
SQLshutdown immediate;? //關(guān)閉數(shù)據(jù)庫(kù)
SQLstartup mount;
lishixinzhi/Article/program/Oracle/201311/18867
第一步,在cmd命令行,輸入sqlplus
第二步,根據(jù)提示輸入用戶名與密碼
1. 查看processes和sessions參數(shù)
SQL show parameter processes
NAME TYPE VALUE
db_writer_processes integer 1
gcs_server_processes integer 0
job_queue_processes integer 10
log_archive_max_processes integer 2
processes integer 50
SQL show parameter sessions
NAME TYPE VALUE
license_max_sessions integer 0
license_sessions_warning integer 0
logmnr_max_persistent_sessions integer 1
sessions integer 60
shared_server_sessions integer
2. 修改processes和sessions值
SQL alter system set processes=300 scope=spfile;
系統(tǒng)已更改。
SQL alter system set sessions=335 scope=spfile;
系統(tǒng)已更改。
3. 修改processes和sessions值必須重啟oracle服務(wù)器才能生效
ORACLE的連接數(shù)(sessions)與其參數(shù)文件中的進(jìn)程數(shù)(process)有關(guān),它們的關(guān)系如下:
sessions=(1.1*process+5)
摘(二)
查詢數(shù)據(jù)庫(kù)當(dāng)前進(jìn)程的連接數(shù):
select count(*) from v$process;
查看數(shù)據(jù)庫(kù)當(dāng)前會(huì)話的連接數(shù):
elect count(*) from v$session;
查看數(shù)據(jù)庫(kù)的并發(fā)連接數(shù):
select count(*) from v$session where status='ACTIVE';
查看當(dāng)前數(shù)據(jù)庫(kù)建立的會(huì)話情況:
select sid,serial#,username,program,machine,status from v$session;
查詢數(shù)據(jù)庫(kù)允許的最大連接數(shù):
select value from v$parameter where name = 'processes';
或者:show parameter processes;
修改數(shù)據(jù)庫(kù)允許的最大連接數(shù):
alter system set processes = 300 scope = spfile;
(需要重啟數(shù)據(jù)庫(kù)才能實(shí)現(xiàn)連接數(shù)的修改)
重啟數(shù)據(jù)庫(kù):
shutdown immediate;
startup;
查看當(dāng)前有哪些用戶正在使用數(shù)據(jù):
select osuser,a.username,cpu_time/executions/1000000||'s',sql_fulltext,machine
from v$session a,v$sqlarea b
where a.sql_address = b.address
order by cpu_time/executions desc;
備注:UNIX 1個(gè)用戶session對(duì)應(yīng)一個(gè)操作系統(tǒng)process,而Windows體現(xiàn)在線程。
啟動(dòng)oracle
su - oracle
sqlplus system/pwd as sysdba //進(jìn)入sql
startup //啟動(dòng)數(shù)據(jù)庫(kù)
lsnrctl start //啟動(dòng)監(jiān)聽(tīng)
sqlplus "/as sysdba"
shutdown immediate;
startup mount;
alter database open;
select count(*) from v$process --當(dāng)前的連接數(shù)
select value from v$parameter where name = 'processes' --數(shù)據(jù)庫(kù)允許的最大連接數(shù)
修改最大連接數(shù):
alter system set processes = 300 scope = spfile;
重啟數(shù)據(jù)庫(kù):
shutdown immediate;
startup;
網(wǎng)頁(yè)題目:如何修改oracle連接 oracle怎么新建連接
文章出自:http://muchs.cn/article8/hgicip.html
成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián),為您提供營(yíng)銷型網(wǎng)站建設(shè)、網(wǎng)站建設(shè)、網(wǎng)站設(shè)計(jì)、域名注冊(cè)、做網(wǎng)站、網(wǎng)站導(dǎo)航
聲明:本網(wǎng)站發(fā)布的內(nèi)容(圖片、視頻和文字)以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主,如果涉及侵權(quán)請(qǐng)盡快告知,我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng),如需處理請(qǐng)聯(lián)系客服。電話:028-86922220;郵箱:631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載,或轉(zhuǎn)載時(shí)需注明來(lái)源: 創(chuàng)新互聯(lián)