Oracle 19c 新特性详解：自动索引（Automatic Indexing）的输出报告范例
PDB1@ZRP>set serveroutput on
PDB1@ZRP>declare
2 report clob := null;
3 begin
4 report := DBMS_AUTO_INDEX.REPORT_ACTIVITY(
5 activity_start => TO_TIMESTAMP('2019-02-17 22:51:00', 'yyyy-mm-dd hh24:mi:ss'),
6 activity_end => TO_TIMESTAMP('2019-02-17 22:53:07', 'yyyy-mm-dd hh24:mi:ss'),
7 type => 'HTML',
8 section => 'ALL',
9 level => 'ALL');
10 dbms_output.put_line(report);
11 end;
12 /
Activity start
Activity end
Executions completed
Executions interrupted
Executions with fatal error
: 17-FEB-2019 22:51:00
: 17-FEB-2019 22:53:07
: 1
: 0
: 0
Index candidates
Indexes created (visible / invisible)
Space used (visible / invisible)
Indexes dropped
SQL statements verified
SQL statements improved (improvement factor)
SQL plan baselines created
Overall improvement factor
: 1
: 1 (1 / 0)
: 45.09_MB (45.09_MB / 0_B)
: 0
: 2
: 2 (44948.5x)
: 0
: 44948.5x
Unused indexes
Space used
Unusable indexes
: 0
: 0_B
: 0
1. The following indexes were created:
*: invisible
1. The performance of the following statements improved:
Parsing Schema Name
SQL ID
SQL Text
Improvement Factor
: ZRP
: 6664xv8fak0q5
: select sharded from test where object_id=123456
: 44919x
- Original
Plan Hash Value
| : 1357081020 |
Notes
- optimizer_use_stats_on_conventional_dml = yes
- With Auto Indexes
Plan Hash Value
| : 159453698 |
Predicate Information (identified by operation id):
-
2 - access("OBJECT_ID"=123456)
Notes
- Dynamic sampling used for this statement ( level = 11 )
Parsing Schema Name
SQL ID
SQL Text
Improvement Factor
: ZRP
: 6d4vdmp6hq73p
: select created from test where object_id=234
: 44978x
- Original
Plan Hash Value
| : 1357081020 |
Notes
- optimizer_use_stats_on_conventional_dml = yes
- With Auto Indexes
Plan Hash Value
| : 159453698 |
Predicate Information (identified by operation id):
-
2 - access("OBJECT_ID"=234)
Notes
- Dynamic sampling used for this statement ( level = 11 )
No errors found.
PL/SQL procedure successfully completed.
PDB1@ZRP>spool off