可以按照以下详细步骤在PDB级别启用和创建AWR报告。
1) 在PDB级别设置awr_pdb_autoflush_enabled=true:
alter session set container=ORA12CPDB4;
alter system set awr_pdb_autoflush_enabled=true;
2) 正确设置AWR快照
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select * from cdb_hist_wr_control;
DBID SNAP_INTERVAL RETENTION TOPNSQL CON_ID
2580889417 +40150 00:01:00.0 +00008 00:00:00.0 DEFAULT 6
##这里修改为60分钟生成一次快照
execute dbms_workload_repository.modify_snapshot_settings(interval => 60);
select * from cdb_hist_wr_control;
DBID SNAP_INTERVAL RETENTION TOPNSQL CON_ID
2580889417 +00000 01:00:00.0 +00008 00:00:00.0 DEFAULT 6
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3) 另请将AWR_SNAPSHOT_TIME_OFFSET设置为1000000,以避免多个PDB同时创建快照时出现性能问题。
SQL> alter session set container=cdb$root;
SQL>alter system set awr_snapshot_time_offset=1000000 scope=both;
4) 等待1-2小时以自动生成快照:
select * from awr_pdb_snapshot;
或者您可以手动创建快照:
SQL> connect / as sysdba
SQL> alter session set container=ORA12CPDB4;
SQL> exec dbms_workload_repository.create_snapshot();
5.创建AWR报告:
sqlplus /nolog
SQL>connect / as sysdba
SQL>alter session set container=ORA12CPDB4
SQL>@/u01/app/oracle/product/12.2.0.1/db_1/rdbms/admin/awrrpt.sql
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原文:https://www.cnblogs.com/hxlasky/p/12550278.html
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