Oracle 11g自带的系统Job介绍

 Oracle 11g Default Jobs

 

Oracle 11g的自带的Job，使用select * from Dba_Scheduler_Jobs;可查询到。介绍如下：

 

1. ORA$AUTOTASK_CLEAN
The job is created by the 11g script catmwin.sql which mentions that this job is an autotask repository data ageing job. It runs the procedure ora$age_autotask_data.

 

2. HM_CREATE_OFFLINE_DICTIONARY
The job is created by the 11g script catmwin.sql which mentions that this is a job for creation of offline dictionary for Database Repair Advisor.

The system job SYS.HM_CREATE_OFFLINE_DICTIONARY executes the dbms_hm.create_offline_dictionary package which creates a LogMiner offline dictionary in the ADR for DRA name translation service. The job for generating the logminer dictionary is scheduled during the maintenance window. This job can be disabled. ‘

 

3. DRA_REEVALUATE_OPEN_FAILURES
The job is created by the 11g script catmwin.sql which mentions that this is a job for reevaluate open failures for Database Repair Advisor.
The job executes the procedure dbms_ir.reevaluateopenfailures.

 

4. MGMT_CONFIG_JOB - comes with the OCM(Oracle Configuration Manager) installation - This is a configuration collection job.

The job is created by the script ocmjb10.sql by running procedure ‘ORACLE_OCM.MGMT_CONFIG.collect_config’.

 

5. MGMT_STATS_CONFIG_JOB
This is an OCM Statistics collection job created in ocmjb10.sql by running ‘ORACLE_OCM.MGMT_CONFIG.collect_stats’.

 

6. BSLN_MAINTAIN_STATS_JOB (替换了10G的GATHER_STATS job)
This job replaces the old GATHER_STATS job. It is a compute statistics job. This job runs the  BSLN_MAINTAIN_STATS_PROG program on the BSLN_MAINTAIN_STATS_SCHED schedule. The program BSLN_MAINTAIN_STATS_PROG will keep the default baseline’s statistics up-to-date.

 

7. XMLDB_NFS_CLEANUP_JOB
The job is created in xdbu102.sql and runs the procedure dbms_xdbutil_int.cleanup_expired_nfsclients.

 

8.下面的视图显示有关自动数据库维护任务的信息：
select * from DBA_AUTOTASK_CLIENT_JOB;
select * from DBA_AUTOTASK_CLIENT;
select * from DBA_AUTOTASK_JOB_HISTORY;
select * from DBA_AUTOTASK_WINDOW_CLIENTS;
select * from DBA_AUTOTASK_CLIENT_HISTORY;

 

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另，关于Oracle 系统job,还可参考：

  1.鸡肋-ORACLE10g自动收集CBO统计信息 

    10G中,GATHER_STATS_JOB这个自动任务默认情况下在工作日晚上10：00-6：00和周末全天开启. disable它的原因。

  2.Oracle 10g GATHER_STATS_JOB造成大量的db file scattered read等待事件

    将10G中自带的job执行时间调整到每天临晨2点到8点...

  3.Oracle 11g新特性之统计信息收集-性能调优