简易高负载进程记录脚本

Oracle 10g 中引入了v$osstat 视图方便了dba了解主机负载情况,同时也可以通过oem网页观察到一段时间内主机上负载较高的进程;但如果db未开启oem管理界面,则无法了解过去时段内高负载服务进程的相关信息。以下脚本可以给予一定的帮助。

CREATE TABLE "SYS"."HIGHLOAD_HISTORY"
(
"SAMPLE_TIME" DATE,
"SPID"     NUMBER(10,0),
"LOAD"     VARCHAR2(7 BYTE),
"SID"      VARCHAR2(30 BYTE),
"USERNAME" VARCHAR2(40 BYTE),
"MACHINE"  VARCHAR2(64 BYTE),
"PROGRAM"  VARCHAR2(48 BYTE),
"SQL_ID"   VARCHAR2(13 BYTE),
"SQL_FULLTEXT" CLOB,
"INST_ID" NUMBER(2,0),
"STATUS"  VARCHAR2(8 BYTE)
)    --建立记录高负载进程信息的表,内容包括了cpu使用率,及sql(并不十分准确,因为获取spid后需要进行查询)
ps aux|grep $ORACLE_SID|awk '{ if($3>=0.3) print "insert into highload_history select sysdate rec_time,"$2,",\47"$3"%\47",", ss.sid,ss.username,ss.machine,ss.program,ss.sql_id,(select sql_fulltext from v$sqlarea sq where sq.sql_id=ss.sql_id),(select instance_number from v$instance),ss.status from v$session ss,v$process pr where  pr.addr=ss.paddr and pr.spid=",$2";"}'  | sqlplus / as sysdba  --直接运行即可

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