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脚本-oracle个人用户并行限制

2021-07-12 17:31:47 作者：互联网

生产库个人用户大量使用并行会导致数据库负载忽高忽低，频繁分析，浪费时间，且可能会出现大量直接路径读，影响数据库整体性能（此问题跟他们讲了也不听，不胜其烦）之前写过使用resource_managed进行并行的限制，该方法适用于数据库体量较小，连接和用户数量少的库，大体量的库会有latch产生（这里不过多阐述）还有就是使用profile中的用户会话数量进行限制，这个会影响到业务人员开多个窗口的问题无奈之下编写个人用户并行限制脚本使用前提： 1.使用此药的数据库生产用户和个人用户有严格的权限划分，比如不同的profile 2.使用并行的用户会话会被kill掉，该用户被锁定5分钟后自动解锁 3.需要提前创建表 user_auto_lock，用户名请自定（稍微改下脚本即可） #！/bin/bash # File: auto_lock_parallel_user.sh # Version: 1.0 #author jiacheng #The concurrent user is locked and automatically unlocked after five minutes ############################################################################## ###########################---usage---######################################## #one node config!!! #first: create table dbmt.user_auto_lock (exectime date default sysdate,sid number(10),serial number(7),inst_id number(3),username varchar2(100),sql_id varchar2(100),degree number(3),req_degree number(3),slaves number(3)); #linux: */1 7-20 * * * sh /home/oracle/scripts/auto_lock_parallel_user.sh >> /home/oracle/scripts/auto_lock_parallel_user.log #HPUX: * 7-20 * * * sh /home/oracle/scripts/auto_lock_parallel_user.sh >> /home/oracle/scripts/auto_lock_parallel_user.log ###############################################################################

echo "The current working directory: $PWD" echo "Shell: $0"

if [[ -f ~/.profile ]] then . ~/.profile fi

if [[ -f ~/.bash_profile ]] then . ~/.bash_profile fi

USERID=`/usr/bin/id -u -nr` if [ $? -ne 0 ] then echo "ERROR: unable to determine uid" exit 99 fi

echo "current user: ${USERID}"

if [ "${USERID}" != "oracle" ] then echo "ERROR: This script must be run as oracle" exit 98 fi

if [ ! $ORACLE_SID ] then echo "Error: No ORACLE_SID set or provided as an argument" exit 97 else echo "current ORACLE_SID: ${ORACLE_SID}" fi

STTIME=`date "+%Y-%m-%d %H:%M:%S"` echo $STTIME

LOGFILE=./auto_lock_parallel_user.log

unset SQLPATH unset ORACLE_PATH

unlock_user=`sqlplus -S '/ as sysdba' <<EOF >>$LOGFILE set serveroutput on; begin for r in (select username from dbmt.user_auto_lock where exectime<SYSDATE-5/1440 and exectime>SYSDATE-7/1440) loop begin dbms_output.put_line('alter user ' || r.username || ' account unlock'); EXECUTE IMMEDIATE 'alter user ' || r.username || ' account unlock'; exception when others then dbms_output.put_line('ERROR ' || SQLCODE || ' ' || SQLERRM); end; end loop; end; / exit; EOF `

echo "${unlock_user}"

function get_xinxi_sql { sqlplus -S '/ as sysdba' <<EOF set pagesize 0 feedback off verify off heading off echo off set linesize 2000; select sid,serial,qcinst_id,username from (select pxs.qcsid sid,pxs.qcserial# serial,pxs.qcinst_id,ses.username,count(*) slaves FROM gv\$px_session pxs, gv\$session ses, gv\$px_process p,dba_users us WHERE ses.sid = pxs.sid AND ses.serial# = pxs.serial# AND p.sid = pxs.sid AND pxs.inst_id = ses.inst_id AND ses.inst_id = p.inst_id and ses.username=us.username AND pxs.req_degree IS NOT NULL and us.profile='JFZZZ' GROUP BY qcsid,qcserial#,pxs.qcinst_id,ses.username ORDER BY pxs.qcinst_id,slaves DESC); insert into dbmt.user_auto_lock(exectime,sid,serial,inst_id,username,sql_id,degree,req_degree,slaves) select sysdate,pxs.qcsid sid,pxs.qcserial# serial,pxs.qcinst_id,ses.username,ses.sql_id,pxs.degree,pxs.req_degree,count(*) slaves FROM gv\$px_session pxs, gv\$session ses, gv\$px_process p,dba_users us WHERE ses.sid = pxs.sid AND ses.serial# = pxs.serial# AND p.sid = pxs.sid AND pxs.inst_id = ses.inst_id AND ses.inst_id = p.inst_id and ses.username=us.username AND pxs.req_degree IS NOT NULL and us.profile='JFZZZ' GROUP BY qcsid,qcserial#,pxs.qcinst_id,ses.username,ses.sql_id,pxs.degree,pxs.req_degree ORDER BY pxs.qcinst_id,slaves DESC; commit; exit; EOF }

px_xinxi=`get_xinxi_sql` echo "${px_xinxi}"

if [ ! -n "$px_xinxi" ] then echo "personal user no parallel session,exit" exit 88 else echo "discovery parallel session!!! next" fi

echo "$px_xinxi" > current_parallel.log

kill_sql=` while read s1 s2 s3 s4 do echo "alter system kill session'$s1,$s2,@$s3' immediate;" done < current_parallel.log`

echo "${kill_sql}" >> $LOGFILE

kill_parallel_session="sqlplus -S '/ as sysdba' set sqlblanklines on set pagesize 0 verify off heading off echo off "${kill_sql}" exit; " echo "${kill_parallel_session}" | sh >> $LOGFILE

if [ $? -eq 0 ] then echo "personal user parallel killed" else echo "$kill_parallel_session" fi

lock_sql=`while read user do echo $user | awk '{print "alter user " $4 " account lock;"}' done < current_parallel.log ` echo "$lock_sql"

lock_user="sqlplus -S '/ as sysdba' set pagesize 0 verify off heading off echo off "${lock_sql}" exit; " echo "${lock_user}" | sh >> $LOGFILE

if [ $? -eq 0 ] then echo "parallel user locked" else echo "ERROR" fi

--编写不易，且用且珍惜，转载请注明来处

标签：lock,并行,echo,kill,user,auto,oracle,parallel,个人用户
来源： https://www.cnblogs.com/nadian-li/p/15002935.html