Oracle 優化篇+使用DBMS包查看SQL的統計信息

原創 zzt_2009 2020-05-22 11:49

說明：本文爲Oracle 11gR2中使用DBMS包查看SQL的統計信息的指導手冊
用途：本文只是提供一種方法和思路，更多更高級的使用方法還期待你不斷的探索哦
標籤：dbms_sqltune.report_sql_detail、查看SQL的統計信息、SQL Details Active Report
溫馨提示：如果您發現本文哪裏寫的有問題或者有更好的寫法請留言或私信我進行修改優化


★ 執行測試SQL
※ 溫馨提示：添加hint-monitor是爲了讓Oracle收集所有的SQL，否則默認只收集耗費資源的SQL

sqlplus / as sysdba
select /*tag zzt_006*//*+ monitor */ *
  from scott.emp e, scott.dept d
 where e.deptno = d.deptno
   and empno > 7800;


★ 查看業務SQL信息（本例中SQL_ID：dzy48nhmfm8mx）

sqlplus / as sysdba
select * from v$sqlarea a where lower(a.SQL_TEXT) like '%/*tag zzt_006*/%';


★ 執行完SQL後使用官方工具SQL Details Active Report來獲取SQL的統計信息
※ SQL Details Active Report（主要內容：統計信息）
※ 官檔：https://www.oracle.com/technetwork/database/manageability/sql-detail-099420.html
※ type參數常用active，還可以選：txt/html/xml

sqlplus / as sysdba
set trimspool on trim on
set pages 0 linesize 1000
set long 1000000 longchunksize 1000000
spool sqlmon_details.html
select dbms_sqltune.report_sql_detail(sql_id       => 'dzy48nhmfm8mx',
                                      report_level => 'all',
                                      type         => 'active') as report  from dual;
spool off

★ HTML輸出案例截圖

 

 

★ HTML輸出案例

<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  <base href="http://download.oracle.com/otn_software/"/>
  <script language="javascript" type="text/javascript" src="emviewers/scripts/flashver.js">
   <!--Test flash version-->
  </script>
  <style>
      body { margin: 0px; overflow:hidden }
    </style>
 </head>
 <body scroll="no">
  <script type="text/xml">
   <!--FXTMODEL-->
   <report db_version="11.2.0.3.0" elapsed_time="5.88" cpu_time="5.82">
    <report_id><![CDATA[/orarep/sql_detail/main?bucket_max_count=128&data_source=auto&event_detail=yes&report_level=all&sql_id=dzy48nhmfm8mx&top_n=10]]></report_id>
    <report_parameters>
     <sql_id>dzy48nhmfm8mx</sql_id>
     <event_detail>yes</event_detail>
     <bucket_max_count>128</bucket_max_count>
     <top_n>10</top_n>
     <report_level>all</report_level>
     <data_source>auto</data_source>
    </report_parameters>
    <target sql_id="dzy48nhmfm8mx" start_time="05/20/2020 12:33:13" end_time="05/20/2020 13:33:13" start_time_stats="05/19/2020 13:33:13" end_time_stats="05/20/2020 13:33:13" inst_id="all" dbid="1462754487" database_role="PRIMARY"/>
    <sql_details>
     <sql_attributes>
      <sql_id>dzy48nhmfm8mx</sql_id>
      <force_matching_signature>6853706444147011714</force_matching_signature>
      <exact_matching_signature>17496396251173590787</exact_matching_signature>
      <text type="full">select /*tag zzt_006*//*+ monitor */ *
  from scott.emp e, scott.dept d
 where e.deptno = d.deptno
   and empno &gt; 7800</text>
     </sql_attributes>
     <activity_histogram source="memory" bucket_interval="32" bucket_count="128" start_time="05/20/2020 12:33:13" end_time="05/20/2020 13:33:13" duration="3600" total_activity="9" sql_activity="0">
      <bucket number="10">
       <activity other_activity="other">1</activity>
      </bucket>
      <bucket number="36">
       <activity other_activity="other">1</activity>
      </bucket>
      <bucket number="44">
       <activity other_activity="other">1</activity>
      </bucket>
      <bucket number="52">
       <activity other_activity="other">1</activity>
      </bucket>
      <bucket number="75">
       <activity other_activity="other">1</activity>
      </bucket>
      <bucket number="87">
       <activity other_activity="other">1</activity>
      </bucket>
      <bucket number="90">
       <activity other_activity="other">1</activity>
      </bucket>
      <bucket number="91">
       <activity other_activity="other">1</activity>
      </bucket>
      <bucket number="95">
       <activity other_activity="other">1</activity>
      </bucket>
     </activity_histogram>
     <top_activity/>
     <plan_activities/>
     <sql_cursors>
      <parent_cursor inst_id="1" num_children="1"/>
     </sql_cursors>
     <report db_version="11.2.0.3.0" elapsed_time="0.04" cpu_time="0.05">
      <report_id><![CDATA[/orarep/sqlmonitor/list?report_level=typical -sql_text&sql_id=dzy48nhmfm8mx]]></report_id>
      <sql_monitor_list_report version="1" sysdate="05/20/2020 13:33:13">
       <sql detail="F" sql_id="dzy48nhmfm8mx" sql_exec_start="05/20/2020 13:32:46" sql_exec_id="16777216">
        <status>DONE (ALL ROWS)</status>
        <first_refresh_time>05/20/2020 13:32:46</first_refresh_time>
        <last_refresh_time>05/20/2020 13:32:46</last_refresh_time>
        <refresh_count>5</refresh_count>
        <inst_id>1</inst_id>
        <session_id>145</session_id>
        <session_serial>93</session_serial>
        <user_id>0</user_id>
        <user>SYS</user>
        <module>[email protected] (TNS V1-V3)</module>
        <service>SYS$USERS</service>
        <program>[email protected] (TNS V1-V3)</program>
        <plan_hash>817787759</plan_hash>
        <is_cross_instance>N</is_cross_instance>
        <stats type="monitor">
         <stat name="duration">.000999</stat>
         <stat name="elapsed_time">999</stat>
         <stat name="cpu_time">999</stat>
         <stat name="user_fetch_count">2</stat>
         <stat name="buffer_gets">6</stat>
        </stats>
       </sql>
      </sql_monitor_list_report>
     </report>
     <sql_plans>
      <sql_plan plan_hash_value="817787759">
       <info_group name="cursor_info" source="memory" info_inst_id="1">
        <info name="parsing_schema_name">SYS</info>
        <info name="optimizer_mode">ALL_ROWS</info>
        <info name="optimizer_cost">5</info>
        <info name="optimizer_env_hash_value">4072203010</info>
        <info name="module">[email protected] (TNS V1-V3)</info>
        <info name="last_active_time">05/20/2020 13:32:46</info>
        <info name="first_load_time">05/20/2020 13:32:46</info>
        <info name="last_load_time">05/20/2020 13:32:46</info>
        <info name="duration">0</info>
       </info_group>
       <stats type="sql_plan_statistics" source="memory" instance_count="1" version_count="1">
        <stat name="sharable_mem">27919</stat>
        <stat name="persistent_mem">10896</stat>
        <stat name="runtime_mem">8976</stat>
        <stat name="typecheck_mem">0</stat>
        <stat name="sorts">1</stat>
        <stat name="loads">1</stat>
        <stat name="invalidations">0</stat>
        <stat name="executions">1</stat>
        <stat name="fetches">2</stat>
        <stat name="px_servers_executions">0</stat>
        <stat name="end_of_fetch_count">1</stat>
        <stat name="parse_calls">1</stat>
        <stat name="disk_reads">0</stat>
        <stat name="direct_writes">0</stat>
        <stat name="buffer_gets">6</stat>
        <stat name="rows_processed">6</stat>
        <stat name="io_cell_offload_eligible_bytes">0</stat>
        <stat name="io_interconnect_bytes">0</stat>
        <stat name="physical_read_requests">0</stat>
        <stat name="physical_read_bytes">0</stat>
        <stat name="physical_write_requests">0</stat>
        <stat name="physical_write_bytes">0</stat>
        <stat name="cpu_time">.014997</stat>
        <stat name="elapsed_time">.015784</stat>
        <stat name="application_wait_time">0</stat>
        <stat name="concurrency_wait_time">0</stat>
        <stat name="cluster_wait_time">0</stat>
        <stat name="user_io_wait_time">0</stat>
        <stat name="plsql_exec_time">0</stat>
        <stat name="java_exec_time">0</stat>
       </stats>
       <stats type="sql_plan_active_time" source="memory" duration="0">
        <stat name="sorts_ps"/>
        <stat name="loads_ps"/>
        <stat name="invalidations_ps"/>
        <stat name="executions_ps"/>
        <stat name="fetches_ps"/>
        <stat name="px_servers_executions_ps"/>
        <stat name="end_of_fetch_count_ps"/>
        <stat name="parse_calls_ps"/>
        <stat name="disk_reads_ps"/>
        <stat name="direct_writes_ps"/>
        <stat name="buffer_gets_ps"/>
        <stat name="rows_processed_ps"/>
        <stat name="io_cell_offload_eligible_bytes_ps"/>
        <stat name="io_interconnect_bytes_ps"/>
        <stat name="physical_read_requests_ps"/>
        <stat name="physical_read_bytes_ps"/>
        <stat name="physical_write_requests_ps"/>
        <stat name="physical_write_bytes_ps"/>
        <stat name="cpu_time_ps"/>
        <stat name="elapsed_time_ps"/>
        <stat name="application_wait_time_ps"/>
        <stat name="concurrency_wait_time_ps"/>
        <stat name="cluster_wait_time_ps"/>
        <stat name="user_io_wait_time_ps"/>
        <stat name="plsql_exec_time_ps"/>
        <stat name="java_exec_time_ps"/>
       </stats>
       <sql_plan_statistics_history begin_snap="6" end_snap="16" delta_snap="16">
        <stats type="snapshot_interval" source="disk" snap_id="7" duration="2102" end_interval_time="05/20/2020 09:00:36">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="8" duration="2229" end_interval_time="05/20/2020 09:37:45">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="9" duration="791" end_interval_time="05/20/2020 09:50:56">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="10" duration="139" end_interval_time="05/20/2020 09:53:15">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="11" duration="4047" end_interval_time="05/20/2020 11:00:42">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="12" duration="3602" end_interval_time="05/20/2020 12:00:44">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="13" duration="3603" end_interval_time="05/20/2020 13:00:47">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="14" duration="1109" end_interval_time="05/20/2020 13:19:16">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="15" duration="138" end_interval_time="05/20/2020 13:21:34">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="disk" snap_id="16" duration="81" end_interval_time="05/20/2020 13:22:55">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
        <stats type="snapshot_interval" source="memory_disk" duration="618" end_interval_time="05/20/2020 13:33:13">
         <stat name="executions"/>
         <stat name="fetches"/>
         <stat name="px_servers_executions"/>
         <stat name="end_of_fetch_count"/>
         <stat name="parse_calls"/>
         <stat name="disk_reads"/>
         <stat name="direct_writes"/>
         <stat name="buffer_gets"/>
         <stat name="rows_processed"/>
         <stat name="io_cell_offload_eligible_bytes"/>
         <stat name="io_interconnect_bytes"/>
         <stat name="physical_read_requests"/>
         <stat name="physical_read_bytes"/>
         <stat name="physical_write_requests"/>
         <stat name="physical_write_bytes"/>
         <stat name="cpu_time"/>
         <stat name="elapsed_time"/>
         <stat name="application_wait_time"/>
         <stat name="concurrency_wait_time"/>
         <stat name="cluster_wait_time"/>
         <stat name="user_io_wait_time"/>
         <stat name="plsql_exec_time"/>
         <stat name="java_exec_time"/>
        </stats>
       </sql_plan_statistics_history>
       <plan plan_source="memory" plan_inst_id="1" plan_child_address="0000000091DEFC30">
        <operation name="SELECT STATEMENT" id="0" depth="0" pos="5">
         <cost>5</cost>
        </operation>
        <operation name="MERGE JOIN" id="1" depth="1" pos="1">
         <card>3</card>
         <bytes>174</bytes>
         <cost>5</cost>
         <io_cost>4</io_cost>
         <cpu_cost>21053326</cpu_cost>
         <time>00:00:01 </time>
         <project>&quot;D&quot;.&quot;DEPTNO&quot;[NUMBER,22], &quot;E&quot;.&quot;DEPTNO&quot;[NUMBER,22], &quot;D&quot;.&quot;LOC&quot;[VARCHAR2,13], &quot;D&quot;.&quot;DNAME&quot;[VARCHAR2,14], &quot;EMPNO&quot;[NUMBER,22], &quot;E&quot;.&quot;ENAME&quot;[VARCHAR2,10], &quot;E&quot;.&quot;JOB&quot;[VARCHAR2,9], &quot;E&quot;.&quot;MGR&quot;[NUMBER,22], &quot;E&quot;.&quot;HIREDATE&quot;[DATE,7], &quot;E&quot;.&quot;SAL&quot;[NUMBER,22], &quot;E&quot;.&quot;COMM&quot;[NUMBER,22]</project>
         <qblock>SEL$1</qblock>
         <other_xml>
          <info type="db_version">11.2.0.3</info>
          <info type="parse_schema"><![CDATA["SYS"]]></info>
          <info type="plan_hash">817787759</info>
          <info type="plan_hash_2">1586662073</info>
          <outline_data>
           <hint><![CDATA[IGNORE_OPTIM_EMBEDDED_HINTS]]></hint>
           <hint><![CDATA[OPTIMIZER_FEATURES_ENABLE('11.2.0.3')]]></hint>
           <hint><![CDATA[DB_VERSION('11.2.0.3')]]></hint>
           <hint><![CDATA[ALL_ROWS]]></hint>
           <hint><![CDATA[OUTLINE_LEAF(@"SEL$1")]]></hint>
           <hint><![CDATA[INDEX(@"SEL$1" "D"@"SEL$1" ("DEPT"."DEPTNO"))]]></hint>
           <hint><![CDATA[INDEX_RS_ASC(@"SEL$1" "E"@"SEL$1" ("EMP"."EMPNO"))]]></hint>
           <hint><![CDATA[LEADING(@"SEL$1" "D"@"SEL$1" "E"@"SEL$1")]]></hint>
           <hint><![CDATA[USE_MERGE(@"SEL$1" "E"@"SEL$1")]]></hint>
          </outline_data>
         </other_xml>
        </operation>
        <operation name="TABLE ACCESS" options="BY INDEX ROWID" id="2" depth="2" pos="1">
         <object>DEPT</object>
         <card>4</card>
         <bytes>80</bytes>
         <cost>2</cost>
         <io_cost>2</io_cost>
         <cpu_cost>15803</cpu_cost>
         <time>00:00:01 </time>
         <project>&quot;D&quot;.&quot;DEPTNO&quot;[NUMBER,22], &quot;D&quot;.&quot;DNAME&quot;[VARCHAR2,14], &quot;D&quot;.&quot;LOC&quot;[VARCHAR2,13]</project>
         <qblock>SEL$1</qblock>
         <object_alias>D@SEL$1</object_alias>
        </operation>
        <operation name="INDEX" options="FULL SCAN" id="3" depth="3" pos="1">
         <object>PK_DEPT</object>
         <card>4</card>
         <cost>1</cost>
         <io_cost>1</io_cost>
         <cpu_cost>7921</cpu_cost>
         <time>00:00:01 </time>
         <project>&quot;D&quot;.ROWID[ROWID,10], &quot;D&quot;.&quot;DEPTNO&quot;[NUMBER,22]</project>
         <qblock>SEL$1</qblock>
         <object_alias>D@SEL$1</object_alias>
        </operation>
        <operation name="SORT" options="JOIN" id="4" depth="2" pos="2">
         <card>3</card>
         <bytes>114</bytes>
         <cost>3</cost>
         <io_cost>2</io_cost>
         <cpu_cost>21037523</cpu_cost>
         <time>00:00:01 </time>
         <project>(#keys=1) &quot;E&quot;.&quot;DEPTNO&quot;[NUMBER,22], &quot;EMPNO&quot;[NUMBER,22], &quot;E&quot;.&quot;ENAME&quot;[VARCHAR2,10], &quot;E&quot;.&quot;JOB&quot;[VARCHAR2,9], &quot;E&quot;.&quot;MGR&quot;[NUMBER,22], &quot;E&quot;.&quot;HIREDATE&quot;[DATE,7], &quot;E&quot;.&quot;SAL&quot;[NUMBER,22], &quot;E&quot;.&quot;COMM&quot;[NUMBER,22]</project>
         <predicates type="access">&quot;E&quot;.&quot;DEPTNO&quot;=&quot;D&quot;.&quot;DEPTNO&quot;</predicates>
         <predicates type="filter">&quot;E&quot;.&quot;DEPTNO&quot;=&quot;D&quot;.&quot;DEPTNO&quot;</predicates>
        </operation>
        <operation name="TABLE ACCESS" options="BY INDEX ROWID" id="5" depth="3" pos="1">
         <object>EMP</object>
         <card>3</card>
         <bytes>114</bytes>
         <cost>2</cost>
         <io_cost>2</io_cost>
         <cpu_cost>16203</cpu_cost>
         <time>00:00:01 </time>
         <project>&quot;EMPNO&quot;[NUMBER,22], &quot;E&quot;.&quot;ENAME&quot;[VARCHAR2,10], &quot;E&quot;.&quot;JOB&quot;[VARCHAR2,9], &quot;E&quot;.&quot;MGR&quot;[NUMBER,22], &quot;E&quot;.&quot;HIREDATE&quot;[DATE,7], &quot;E&quot;.&quot;SAL&quot;[NUMBER,22], &quot;E&quot;.&quot;COMM&quot;[NUMBER,22], &quot;E&quot;.&quot;DEPTNO&quot;[NUMBER,22]</project>
         <qblock>SEL$1</qblock>
         <object_alias>E@SEL$1</object_alias>
        </operation>
        <operation name="INDEX" options="RANGE SCAN" id="6" depth="4" pos="1">
         <object>PK_EMP</object>
         <card>3</card>
         <cost>1</cost>
         <io_cost>1</io_cost>
         <cpu_cost>7921</cpu_cost>
         <time>00:00:01 </time>
         <project>&quot;E&quot;.ROWID[ROWID,10], &quot;EMPNO&quot;[NUMBER,22]</project>
         <predicates type="access">&quot;EMPNO&quot;&gt;7800</predicates>
         <qblock>SEL$1</qblock>
         <object_alias>E@SEL$1</object_alias>
        </operation>
       </plan>
       <report db_version="11.2.0.3.0" elapsed_time="5.13" cpu_time="5.08">
        <report_id><![CDATA[/orarep/sqlmonitor/main?bucket_max_count=128&event_detail=yes&report_level=typical -xplan -sql_fulltext&sql_id=dzy48nhmfm8mx&sql_plan_hash_value=817787759]]></report_id>
        <sql_monitor_report version="4.0" sysdate="05/20/2020 13:32:46">
         <report_parameters>
          <sql_id>dzy48nhmfm8mx</sql_id>
          <bucket_count>2</bucket_count>
          <interval_start>05/20/2020 13:32:46</interval_start>
          <interval_end>05/20/2020 13:32:47</interval_end>
         </report_parameters>
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          <user_id>0</user_id>
          <user>SYS</user>
          <program>[email protected] (TNS V1-V3)</program>
          <module>[email protected] (TNS V1-V3)</module>
          <service>SYS$USERS</service>
          <sql_fulltext is_full="Y">select /*tag zzt_006*//*+ monitor */ *
  from scott.emp e, scott.dept d
 where e.deptno = d.deptno
   and empno &gt; 7800</sql_fulltext>
          <status>DONE (ALL ROWS)</status>
          <refresh_count>5</refresh_count>
          <first_refresh_time>05/20/2020 13:32:46</first_refresh_time>
          <last_refresh_time>05/20/2020 13:32:46</last_refresh_time>
          <duration>.000999</duration>
          <optimizer_env>
           <param name="active_instance_count">1</param>
           <param name="is_recur_flags">0</param>
           <param name="parallel_autodop">0</param>
           <param name="parallel_ddl_mode">enabled</param>
           <param name="parallel_ddldml">0</param>
           <param name="parallel_degree">0</param>
           <param name="parallel_dml_mode">disabled</param>
           <param name="parallel_execution_enabled">true</param>
           <param name="parallel_max_degree">4</param>
           <param name="parallel_query_default_dop">0</param>
           <param name="parallel_query_mode">enabled</param>
           <param name="pga_aggregate_target">368640 KB</param>
           <param name="total_cpu_count">2</param>
          </optimizer_env>
         </target>
         <stats type="monitor">
          <stat name="elapsed_time">999</stat>
          <stat name="cpu_time">999</stat>
          <stat name="user_fetch_count">2</stat>
          <stat name="buffer_gets">6</stat>
         </stats>
         <plan_monitor max_io_reqs="0" max_io_bytes="0">
          <operation id="0" name="SELECT STATEMENT" depth="0" position="0">
           <stats type="plan_monitor">
            <stat name="first_active">05/20/2020 13:32:46</stat>
            <stat name="last_active">05/20/2020 13:32:46</stat>
            <stat name="duration">1</stat>
            <stat name="from_most_recent">0</stat>
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            <stat name="starts">1</stat>
            <stat name="cardinality">6</stat>
           </stats>
          </operation>
          <operation id="1" parent_id="0" name="MERGE JOIN" depth="1" position="1">
           <optimizer>
            <cardinality>3</cardinality>
            <bytes>174</bytes>
            <cost>5</cost>
            <cpu_cost>21053326</cpu_cost>
            <io_cost>4</io_cost>
            <time>1</time>
           </optimizer>
           <stats type="plan_monitor">
            <stat name="first_active">05/20/2020 13:32:46</stat>
            <stat name="last_active">05/20/2020 13:32:46</stat>
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            <stat name="from_sql_exec_start">0</stat>
            <stat name="starts">1</stat>
            <stat name="cardinality">6</stat>
           </stats>
          </operation>
          <operation id="2" parent_id="1" name="TABLE ACCESS" options="BY INDEX ROWID" depth="2" position="1">
           <object type="TABLE">
            <owner>SCOTT</owner>
            <name>DEPT</name>
           </object>
           <optimizer>
            <cardinality>4</cardinality>
            <bytes>80</bytes>
            <cost>2</cost>
            <cpu_cost>15803</cpu_cost>
            <io_cost>2</io_cost>
            <time>1</time>
           </optimizer>
           <stats type="plan_monitor">
            <stat name="first_active">05/20/2020 13:32:46</stat>
            <stat name="last_active">05/20/2020 13:32:46</stat>
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            <stat name="from_sql_exec_start">0</stat>
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           </stats>
          </operation>
          <operation id="3" parent_id="2" name="INDEX" options="FULL SCAN" depth="3" position="1">
           <object type="INDEX (UNIQUE)">
            <owner>SCOTT</owner>
            <name>PK_DEPT</name>
           </object>
           <optimizer>
            <cardinality>4</cardinality>
            <cost>1</cost>
            <cpu_cost>7921</cpu_cost>
            <io_cost>1</io_cost>
            <time>1</time>
           </optimizer>
           <stats type="plan_monitor">
            <stat name="first_active">05/20/2020 13:32:46</stat>
            <stat name="last_active">05/20/2020 13:32:46</stat>
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            <stat name="starts">1</stat>
            <stat name="cardinality">4</stat>
           </stats>
          </operation>
          <operation id="4" parent_id="1" name="SORT" options="JOIN" depth="2" position="2">
           <optimizer>
            <cardinality>3</cardinality>
            <bytes>114</bytes>
            <cost>3</cost>
            <cpu_cost>21037523</cpu_cost>
            <io_cost>2</io_cost>
            <time>1</time>
           </optimizer>
           <stats type="plan_monitor">
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            <stat name="max_memory">2048</stat>
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          <operation id="5" parent_id="4" name="TABLE ACCESS" options="BY INDEX ROWID" depth="3" position="1">
           <object type="TABLE">
            <owner>SCOTT</owner>
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            <cost>2</cost>
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            <io_cost>2</io_cost>
            <time>1</time>
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           <stats type="plan_monitor">
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            <stat name="last_active">05/20/2020 13:32:46</stat>
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          </operation>
          <operation id="6" parent_id="5" name="INDEX" options="RANGE SCAN" depth="4" position="1">
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            <owner>SCOTT</owner>
            <name>PK_EMP</name>
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           <optimizer>
            <cardinality>3</cardinality>
            <cost>1</cost>
            <cpu_cost>7921</cpu_cost>
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            <time>1</time>
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           <stats type="plan_monitor">
            <stat name="first_active">05/20/2020 13:32:46</stat>
            <stat name="last_active">05/20/2020 13:32:46</stat>
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            <stat name="starts">1</stat>
            <stat name="cardinality">6</stat>
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          </operation>
         </plan_monitor>
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      </sql_plan>
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