oracle rac常用命令集錦

1、修改會話數

查詢數據庫當前進程的連接數：
select count(*) from v$process;

修改數據庫允許的最大連接數：
alter system set processes =1500 scope = spfile;
(需要重啟數據庫才能實現連接數的修改)

2、GRID安裝出錯如何刪除

su - grid

cd /dev/oracleasm/disks

rm -rf vote*

cd /dev/disk/by-label

rm -rf vote*

ll /g01

rm -rf *

chown -R grid:oinstall  /g01

rm /etc/oracle/ocr.loc

rm -rf /etc/ora*

ps -ef |grep oha

kill -9 47495

cd /etc/init.d

ls *oha*

rm -rf *oha*

cd /etc/rc3.d

rm -rf S96ohasd

cd /etc/rc5.d

rm -rf S96oha*

oracleasm scandisks

oracleasm listdisks

oracleasm querydisk /dev/mapper/*

dd if=/dev/zero of=/dev/mapper/sc-vote-hpp1 bs=1M count=300

dd if=/dev/zero of=/dev/mapper/tc-vote-hpp1 bs=1M count=300

dd if=/dev/zero of=/dev/mapper/yd-vote-netappp1 bs=1M count=300

3、rac集群啟停

停止rac

oracle用戶

  181  srvctl status database -d prod

  182  srvctl stop database -d prod

  183  srvctl status database -d prod

 root用戶

./crsctl start has  高可用

cd /g01/11ggrid/app/11.2.0/grid/bin

 ./crsctl check cluster -all

 ./crsctl stop cluster -all

 ./crsctl check cluster -all

 ./crs_stat -t -v

  reboot

開始rac

root用戶

  975  cd /g01/11ggrid/app/11.2.0/grid/bin  

  977  ./crsctl start cluster -all

  978  ./crsctl check cluster -all

  980  ./crsctl status resource  -t

oracle用戶

[oracle@sc-rac1 ~]$srvctl start  database -d prod

[oracle@sc-rac1 ~]$ srvctl status  database -d prod

Instance prod1 is running on node sc-rac1

Instance prod2 is running on node sc-rac2

Instance prod3 is running on node tc-rac1