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Oracle RAC环境下配置statspack
Statspack是Oracle 9i时代的产物，对于监控与分析数据库性能有着跨里程碑的意义，是AWR的前身。在Oracle 10g后AWR取代了statspack。尽管如此，awr异常或者需要调试包license的情况下statpack依旧是不错的选择。然而在RAC环境中，statspack并不支持，需要单独的进行配置以及使用job来进行管理。本文描述的则是通过在RAC环境下创建service，以及job来达到各节点同时产生snapshot的效果。
一、演示环境
suse11a:oracle:orcl101 > cat /etc/issueWelcome to SUSE Linux Enterprise Server 11 SP3 (x86_64) - Kernel \r (\l).suse11a:oracle:orcl101 > sqlplus -vSQL*Plus: Release 10.2.0.5.0 - Productionsuse11a:oracle:orcl101 > $ORA_CRS_HOME/bin/crsctl query crs activeversionCRS active version on the cluster is [10.2.0.5.0]
二、配置statspack
1)首先添加service$ srvctl add service -d orcl10 -s statspack_suse11a_srvc -r orcl101 $ srvctl add service -d orcl10 -s statspack_suse11b_srvc -r orcl102 $ srvctl start service -d orcl10 -s statspack_suse11a_srvc$ srvctl start service -d orcl10 -s statspack_suse11b_srvc$ srvctl status service -d orcl10Service orcl10_srv is running on instance(s) orcl102, orcl101Service statspack_suse11a_srvc is running on instance(s) orcl101Service statspack_suse11b_srvc is running on instance(s) orcl102$ srvctl config service -d orcl10 orcl10_srv PREF: orcl102 orcl101 AVAIL: statspack_suse11a_srvc PREF: orcl101 AVAIL: statspack_suse11b_srvc PREF: orcl102 AVAIL: $ lsnrctl status ......... Service "statspack_suse11a_srvc" has 1 instance(s). Instance "orcl101", status READY, has 2 handler(s) for this service...Service "statspack_suse11b_srvc" has 1 instance(s). Instance "orcl102", status READY, has 1 handler(s) for this service... ............. 2)配置statspackconn / as sysdbacreate tablespace perfstat datafile ‘+ASM_DATA‘ size 500m autoextend on; @?/rdbms/admin/spcreateGRANT EXECUTE ON DBMS_LOCK TO perfstat;GRANT CREATE JOB TO perfstat;GRANT EXECUTE ON sys.DBMS_SCHEDULER TO perfstat;GRANT EXECUTE ON sys.DBMS_ISCHED TO perfstat;3)创建job classBEGIN DBMS_SCHEDULER.create_job_class ( job_class_name => ‘statspack_suse11a_class‘, service => ‘statspack_suse11a_srvc‘); DBMS_SCHEDULER.create_job_class ( job_class_name => ‘statspack_suse11b_class‘, service => ‘statspack_suse11b_srvc‘);END;/SQL> select job_class_name, service from dba_scheduler_job_classes; JOB_CLASS_NAME SERVICE------------------------------ -------------------------------------------------DEFAULT_JOB_CLASSAUTO_TASKS_JOB_CLASSSTATSPACK_SUSE11A_CLASS statspack_suse11a_srvcSTATSPACK_SUSE11B_CLASS statspack_suse11b_srvcGRANT EXECUTE ON sys.STATSPACK_SUSE11A_CLASS TO perfstat; GRANT EXECUTE ON sys.STATSPACK_SUSE11B_CLASS TO perfstat;4)创建用于同步节点的过程conn perfstat/perfstatCREATE OR REPLACE PROCEDURE db_proc_rac_statspackAS w_status NUMBER (38); w_handle VARCHAR2 (60); w_snap_level NUMBER;BEGIN w_snap_level := 7; sys.DBMS_LOCK.allocate_unique (lockname => ‘Synchronize Statspack‘, lockhandle => w_handle); w_status := sys.DBMS_LOCK.request (lockhandle => w_handle, lockmode => DBMS_LOCK.x_mode, timeout => 300, -- seconds, default is dbms_lock.maxwait release_on_commit => FALSE -- which is the default ); IF (w_status = 0) THEN DBMS_OUTPUT.put_line ( TO_CHAR (SYSDATE, ‘dd hh24:mi:ss‘) || ‘: Acquired lock, running statspack‘); statspack.snap (w_snap_level); DBMS_OUTPUT.put_line ( TO_CHAR (SYSDATE, ‘dd hh24:mi:ss‘) || ‘: Snapshot completed‘); w_status := sys.DBMS_LOCK.release (lockhandle => w_handle); ELSE DBMS_OUTPUT.put_line ( TO_CHAR (SYSDATE, ‘dd hh24:mi:ss‘) || CASE w_status WHEN 1 THEN ‘: Lock wait timed out‘ WHEN 2 THEN ‘: deadlock detected‘ WHEN 3 THEN ‘: parameter error‘ WHEN 4 THEN ‘: already holding lock‘ WHEN 5 THEN ‘: illegal lock handle‘ ELSE ‘: unknown error‘ END); END IF;END;/5) 创建用于job调度的过程BEGIN DBMS_SCHEDULER.create_program (program_name => ‘PROC_RAC_STATSPACK‘, program_type => ‘STORED_PROCEDURE‘, program_action => ‘db_proc_rac_statspack‘, enabled => TRUE); END; / 6) 清除同名job(如果存在)BEGIN DBMS_SCHEDULER.drop_job (‘ORCL10_PERFSTAT_COLLECT_N1‘,force=>true); DBMS_SCHEDULER.drop_job (‘ORCL10_PERFSTAT_COLLECT_N2‘,force=>true); DBMS_SCHEDULER.drop_job (‘ORCL10_PERFSTAT_PURGE_N1‘,force=>true); DBMS_SCHEDULER.drop_job (‘ORCL10_PERFSTAT_PURGE_N2‘,force=>true); END; / 7) 创建产生snapshot以及清除历史snapshot的job --Author ：Leshami --Blog ：http://blog.csdn.net/leshamiBEGIN DBMS_SCHEDULER.create_job ( job_name => ‘ORCL_PERFSTAT_COLLECT_N1‘, program_name => ‘PROC_RAC_STATSPACK‘, start_date => SYSTIMESTAMP, repeat_interval => ‘FREQ=hourly; INTERVAL=1; BYMINUTE=30‘, job_class => ‘statspack_suse11a_class‘, comments => ‘This job will run on suse11a‘, ENABLED => TRUE); DBMS_SCHEDULER.create_job ( job_name => ‘ORCL_PERFSTAT_PURGE_N1‘, job_type => ‘PLSQL_BLOCK‘, job_action => ‘begin STATSPACK.PURGE(31); end;‘, start_date => SYSTIMESTAMP, repeat_interval => ‘FREQ=DAILY; BYHOUR=23; BYMINUTE=30‘, job_class => ‘statspack_suse11a_class‘, enabled => TRUE);END;/--- create the job for Node 2:BEGIN DBMS_SCHEDULER.create_job ( job_name => ‘ORCL_PERFSTAT_COLLECT_N2‘, program_name => ‘PROC_RAC_STATSPACK‘, start_date => SYSTIMESTAMP, repeat_interval => ‘FREQ=hourly; INTERVAL=1; BYMINUTE=30‘, job_class => ‘statspack_suse11b_class‘, comments => ‘This job will run on suse11b‘, enabled => TRUE); DBMS_SCHEDULER.create_job ( job_name => ‘ORCL_PERFSTAT_PURGE_N2‘, job_type => ‘PLSQL_BLOCK‘, job_action => ‘begin STATSPACK.PURGE(31); end;‘, start_date => SYSTIMESTAMP, repeat_interval => ‘FREQ=DAILY; BYHOUR=23; BYMINUTE=30‘, job_class => ‘statspack_suse11b_class‘, enabled => TRUE);END;/
三、校验结果
1) 验证创建的JobSQL> select OWNER, JOB_NAME, STATE, START_DATE, ENABLED from dba_scheduler_jobs 2 where owner= ‘PERFSTAT‘; OWNER JOB_NAME STATE START_DATE ENABL--------------- ------------------------------ --------------- --------------------------------------- -----PERFSTAT ORCL_PERFSTAT_PURGE_N1 SCHEDULED 22-AUG-14 02.42.37.295650 PM +08:00 TRUEPERFSTAT ORCL_PERFSTAT_COLLECT_N1 SCHEDULED 22-AUG-14 02.42.37.269292 PM +08:00 TRUEPERFSTAT ORCL_PERFSTAT_COLLECT_N2 SCHEDULED 22-AUG-14 02.43.17.414613 PM +08:00 TRUEPERFSTAT ORCL_PERFSTAT_PURGE_N2 SCHEDULED 22-AUG-14 02.43.17.438804 PM +08:00 TRUE2) 手工执行JobSQL> exec dbms_scheduler.run_job(‘ORCL_PERFSTAT_COLLECT_N1‘); SQL> exec dbms_scheduler.run_job(‘ORCL_PERFSTAT_COLLECT_N2‘);SQL> SELECT * 2 FROM ( SELECT log_id, 3 job_name, 4 job_subname, 5 status, 6 actual_start_date, 7 run_duration 8 FROM dba_scheduler_job_run_details 9 WHERE job_name like ‘%ORCL_PERFSTAT%‘ 10 ORDER BY actual_start_date DESC) 11 WHERE ROWNUM < 15; LOG_ID JOB_NAME JOB_SUBNAME STATUS ACTUAL_START_DATE RUN_DURATION ---------- ------------------------- ------------ ----------- ------------------------------------- ---------------- 156 ORCL_PERFSTAT_COLLECT_N2 SUCCEEDED 22-AUG-14 02.43.32.470484 PM +08:00 +000 00:00:04 155 ORCL_PERFSTAT_COLLECT_N1 SUCCEEDED 22-AUG-14 02.43.00.288887 PM +08:00 +000 00:00:04
四、参考
http://www.oracle-class.com/?p=2384
http://jonathanlewis.wordpress.com/2011/01/14/statspack-on-rac/
Oracle RAC环境下配置statspack
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