SQL> set autotrace trace explain
SQL> select * from v$parameter;
Execution Plan
----------------------------------------------------------
Plan hash value: 1128103955
------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 926 | 1 (100)| 00:00:01 |
|* 1 | HASH JOIN | | 1 | 926 | 1 (100)| 00:00:01 |
|* 2 | FIXED TABLE FULL| X$KSPPI | 1 | 249 | 0 (0)| 00:00:01 |
| 3 | FIXED TABLE FULL| X$KSPPCV | 100 | 67700 | 0 (0)| 00:00:01 |
------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
1 - access("X"."INDX"="Y"."INDX")
filter(TRANSLATE("KSPPINM",'_','#') NOT LIKE '#%' OR
"KSPPSTDF"='FALSE' OR BITAND("KSPPSTVF",5)>0)
2 - filter("X"."INST_ID"=USERENV('INSTANCE') AND
TRANSLATE("KSPPINM",'_','#') NOT LIKE '##%')
以上查询的是什么？
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