oracle 手动收集统计信息

1、手动收集Oracle schema下表列信息

begindbms_stats.gather_schema_stats(ownname          => '用户名',method_opt       => 'for all columns size repeat',degree           => 8,options          => 'GATHER AUTO',estimate_percent => dbms_stats.auto_sample_size);
end;
/

2、收集整个数据库

begindbms_stats.gather_database_stats(degree => 4);
end;
/