时间：2021-07-01 10:21:17 帮助过：31人阅读
上一篇测试了ADO的压缩功能 Heat Map and Automatic Data Optimization : part-1 下面测下ADO的存储层功能 简单的说下就是使用ado move 表、分区操作，把不是热数据的数据移动到性能低下的存储上 下面是工作的示意图 准备环境 SQL conn travel/aaConnected.?
上一篇测试了ADO的压缩功能 Heat Map and Automatic Data Optimization : part-1
下面测下ADO的存储层功能
简单的说下就是使用ado move 表、分区操作，把不是热数据的数据移动到性能低下的存储上
下面是工作的示意图
准备环境
SQL> conn travel/aa
Connected.
?
USERNAME INST_NAME HOST_NAME SID SERIAL# VERSION STARTED SPID OPID CPID SADDR PADDR
-------------------- ------------ ------------------------- ----- -------- ---------- -------- --------------- ----- --------------- ---------------- ----------------
TRAVEL noncdb localhost.localdomain 1 7 12.1.0.1.0 20140526 3209 7 2927 000000009F6CA108 000000009F9865B8
?
?
SQL> SELECT * FROM tab;
?
TNAME TABTYPE CLUSTERID
----------------------------------- -------------- ----------
HEAT_TEST TABLE
?
SQL>
SQL> conn / AS sysdba
Connected.
?
USERNAME INST_NAME HOST_NAME SID SERIAL# VERSION STARTED SPID OPID CPID SADDR PADDR
-------------------- ------------ ------------------------- ----- -------- ---------- -------- --------------- ----- --------------- ---------------- ----------------
SYS noncdb localhost.localdomain 1 9 12.1.0.1.0 20140526 3234 7 2927 000000009F6CA108 000000009F9865B8
?
?
SQL> CREATE tablespace ado_t1 datafile '/oradata/noncdb/ado_t1.dbf' SIZE 200M;
?
Tablespace created.
?
?
SQL> CREATE tablespace ado_t2 datafile '/oradata/noncdb/ado_t2.dbf' SIZE 200M;
?
Tablespace created.
?
SQL>
?
SQL> CREATE TABLE ado_move tablespace ado_t1 AS SELECT * FROM dba_objects;
?
TABLE created.
?
SQL> INSERT INTO ado_move SELECT * FROM ado_move;
?
90764 ROWS created.
?
SQL> commit;
?
Commit complete.
?
SQL> INSERT INTO ado_move SELECT * FROM ado_move;
?
181528 ROWS created.
?
SQL> commit;
?
Commit complete.
?
SQL> INSERT INTO ado_move SELECT * FROM ado_move;
?
363056 ROWS created.
?
SQL> INSERT INTO ado_move SELECT * FROM ado_move;
?
726112 ROWS created.
?
SQL> commit;
?
Commit complete.
?
SQL> @dba_tablespaces
?
+------------------------------------------------------------------------+
| Report : Tablespaces |
| Instance : noncdb |
| USER : TRAVEL |
+------------------------------------------------------------------------+
?
STATUS Tablespace Name TS TYPE Ext. Mgt. Seg. Mgt. Tablespace SIZE Used (IN bytes) Pct. Used
--------- ------------------------- --------------- ---------- ---------- ------------------ ------------------ ---------
ONLINE ADO_T1 PERMANENT LOCAL AUTO 209,715,200 202,375,168 97
ONLINE ADO_T2 PERMANENT LOCAL AUTO 209,715,200 1,048,576 1
ONLINE SYSAUX PERMANENT LOCAL AUTO 765,460,480 760,086,528 99
ONLINE SYSTEM PERMANENT LOCAL MANUAL 817,889,280 811,401,216 99
ONLINE TEMP TEMPORARY LOCAL MANUAL 91,226,112 90,177,536 99
ONLINE UNDOTBS1 UNDO LOCAL MANUAL 152,043,520 151,257,088 99
ONLINE USERS PERMANENT LOCAL AUTO 66,846,720 15,400,960 23
------------------ ------------------ ---------
avg 74
SUM 2,312,896,512 2,031,747,072
?
7 ROWS selected.
上面创建了2个表空间，并在表空间ADO_T1上创建了一个张表，插入大量数据，是空间使用率得到97%
下面查看下表的Heat map情况
SQL> ALTER system SET NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'
2
SQL> col owner FOR a20
SQL> col object_name FOR a20
SQL> col "Tracking Time" FOR a40
SQL> col "Seg write" FOR a20
SQL>
SQL> pro DBA_HEAT_MAP_SEG_HISTOGRAM
DBA_HEAT_MAP_SEG_HISTOGRAM
SQL> SELECT object_name, to_char(track_time,'YYYY-MM-DD HH:MI:SS') "Tracking Time",
2 segment_write "Seg write",
3 FULL_SCAN "Full Scan",
4 lookup_scan "Lookup Scan"
5 FROM DBA_HEAT_MAP_SEG_HISTOGRAM
6 WHERE object_name=UPPER('ado_move');
?
OBJECT_NAME Tracking TIME Seg WRITE FULL S Lookup
-------------------- ---------------------------------------- -------------------- ------ ------
ADO_MOVE 2014-05-26 11:26:52 YES YES NO
?
SQL>
SQL>
SQL> pro DBA_HEAT_MAP_SEGMENT
DBA_HEAT_MAP_SEGMENT
SQL>
SQL> SELECT owner,object_name,SEGMENT_WRITE_TIME,SEGMENT_READ_TIME,FULL_SCAN,LOOKUP_SCAN
2 FROM DBA_HEAT_MAP_SEGMENT
3 WHERE object_name=UPPER('ado_move');
?
OWNER OBJECT_NAME SEGMENT_WRITE_TIM SEGMENT_READ_TIME FULL_SCAN LOOKUP_SCAN
-------------------- -------------------- ----------------- ----------------- ----------------- -----------------
TRAVEL ADO_MOVE 20140526 11:26:53 20140526 11:26:53
?
SQL>
?
SQL>
SQL> SELECT OBJECT_NAME, TRACK_TIME, SEGMENT_WRITE "Seg_write", SEGMENT_READ "Seg_read", FULL_SCAN, LOOKUP_SCAN
2 FROM v$heat_map_segment
3 WHERE object_name=UPPER('ado_move');
?
OBJECT_NAME TRACK_TIME Seg_wr Seg_read FULL_S LOOKUP
-------------------- ----------------- ------ -------------------- ------ ------
ADO_MOVE 20140526 11:28:49 YES NO YES NO
创建策略
SQL> ALTER TABLE ADO_MOVE ILM ADD POLICY TIER TO ADO_T2;
?
TABLE altered.
查看策略
SQL> COL policy_name format A12
SQL> COL TIER_TBS format A20
SQL> SELECT policy_name, action_type, scope,
2 tier_tablespace "TIER_TBS"
3 FROM user_ilmdatamovementpolicies
4 ORDER BY policy_name;
?
POLICY_NAME ACTION_TYPE SCOPE TIER_TBS
------------ ---------------------- -------------- --------------------
P1 COMPRESSION SEGMENT
P21 STORAGE SEGMENT ADO_T2
?
SQL> SELECT policy_name, object_name, inherited_from, enabled FROM user_ilmobjects;
?
POLICY_NAME OBJECT_NAME INHERITED_FROM ENABLE
------------ -------------------- ---------------------------------------- ------
P1 HEAT_TEST POLICY NOT INHERITED NO
P21 ADO_MOVE POLICY NOT INHERITED YES
?
SQL> SELECT * FROM dba_ilmparameters;
?
Tablespace Name VALUE
------------------------- ----------
ENABLED 1
JOB LIMIT 10
EXECUTION MODE 3
EXECUTION INTERVAL 15
TBS PERCENT USED 85
TBS PERCENT FREE 25
?
6 ROWS selected.
?
执行操作
SQL> DECLARE
2 v_executionid NUMBER;
3 BEGIN
4 dbms_ilm.execute_ILM (ILM_SCOPE => dbms_ilm.SCOPE_SCHEMA,
5 execution_mode => dbms_ilm.ilm_execution_offline,
6 task_id => v_executionid);
7 END;
8 /
?
PL/SQL PROCEDURE successfully completed.
?
SQL> @dba_tablespaces
?
+------------------------------------------------------------------------+
| Report : Tablespaces |
| Instance : noncdb |
| USER : TRAVEL |
+------------------------------------------------------------------------+
?
STATUS Tablespace Name TS TYPE Ext. Mgt. Seg. Mgt. Tablespace SIZE Used (IN bytes) Pct. Used
--------- ------------------------- --------------- ---------- ---------- ------------------ ------------------ ---------
ONLINE ADO_T1 PERMANENT LOCAL AUTO 209,715,200 202,375,168 97
ONLINE ADO_T2 PERMANENT LOCAL AUTO 209,715,200 1,048,576 1
ONLINE SYSAUX PERMANENT LOCAL AUTO 807,403,520 763,428,864 95
ONLINE SYSTEM PERMANENT LOCAL MANUAL 817,889,280 811,401,216 99
ONLINE TEMP TEMPORARY LOCAL MANUAL 91,226,112 90,177,536 99
ONLINE UNDOTBS1 UNDO LOCAL MANUAL 152,043,520 151,846,912 100
ONLINE USERS PERMANENT LOCAL AUTO 66,846,720 15,400,960 23
------------------ ------------------ ---------
avg 73
SUM 2,354,839,552 2,035,679,232
?
7 ROWS selected.
?
?
?
SQL> COL job_name format A20
SQL> COL object_name format A8
SQL> COL task_id format 99999
SQL>
SQL> SELECT task_id, state FROM user_ilmtasks;
?
TASK_ID STATE
------- ------------------
2 COMPLETED
62 COMPLETED
?
SQL>
SQL>
SQL> COL object_name format A20
SQL> col POLICY_NAME FOR a10
SQL> col SELECTED_FOR_EXECUTION FOR a80
SQL> SELECT TASK_ID, POLICY_NAME, OBJECT_NAME,
2 SELECTED_FOR_EXECUTION, JOB_NAME
3 FROM user_ilmevaluationdetails;
?
TASK_ID POLICY_NAM OBJECT_NAME SELECTED_FOR_EXECUTION JOB_NAME
------- ---------- -------------------- -------------------------------------------------------------------------------- --------------------
62 P21 ADO_MOVE SELECTED FOR EXECUTION ILMJOB122
62 P1 HEAT_TEST POLICY DISABLED
2 P1 HEAT_TEST SELECTED FOR EXECUTION ILMJOB42
?
SQL>
SQL> COL job_name format A20
SQL> COL object_name format A8
SQL> COL task_id format 99999
SQL>
SQL>
SQL> SELECT task_id, job_name, job_state FROM user_ilmresults;
?
TASK_ID JOB_NAME JOB_STATE
------- -------------------- ----------------------------------------------------------------------
2 ILMJOB42 COMPLETED SUCCESSFULLY
62 ILMJOB122 FAILED
--发现任务失败，查看失败原因
?
?
?
SQL> col COMMENTS FOR a80
SQL> SELECT task_id, job_name, job_state,COMMENTS FROM user_ilmresults;
?
TASK_ID JOB_NAME JOB_STATE COMMENTS
------- -------------------- ---------------------------------------------------------------------- --------------------------------------------------------------------------------
2 ILMJOB42 COMPLETED SUCCESSFULLY
62 ILMJOB122 FAILED ORA-01652: unable TO extend temp segment BY 1024 IN tablespace ADO_T2
ORA-06512: at line 1
?
82 ILMJOB162 FAILED ORA-01652: unable TO extend temp segment BY 1024 IN tablespace ADO_T2
ORA-06512: at line 1
原因为表空间存储空间不够。。。。
?
SQL>
?
?
增大数据文件
SQL> ALTER DATABASE datafile '/oradata/noncdb/ado_t2.dbf' resize 400m;
?
DATABASE altered.
?
?
在此执行
SQL> DECLARE
2 v_executionid NUMBER;
3 BEGIN
4 dbms_ilm.execute_ILM (ILM_SCOPE => dbms_ilm.SCOPE_SCHEMA,
5 execution_mode => dbms_ilm.ilm_execution_offline,
6 task_id => v_executionid);
7 END;
8 /
?
PL/SQL PROCEDURE successfully completed.
?
SQL>
SQL> SELECT task_id, job_name, job_state,COMMENTS FROM user_ilmresults;
?
TASK_ID JOB_NAME JOB_STATE COMMENTS
------- -------------------- ---------------------------------------------------------------------- --------------------------------------------------------------------------------
2 ILMJOB42 COMPLETED SUCCESSFULLY
62 ILMJOB122 FAILED ORA-01652: unable TO extend temp segment BY 1024 IN tablespace ADO_T2
ORA-06512: at line 1
?
82 ILMJOB162 FAILED ORA-01652: unable TO extend temp segment BY 1024 IN tablespace ADO_T2
ORA-06512: at line 1
?
103 ILMJOB242 COMPLETED SUCCESSFULLY
?
成功完成
SQL> col TABLE_NAME FOR a20
SQL> /
?
TABLE_NAME TABLESPACE_NAME
-------------------- ------------------------------------------------------------
ADO_MOVE ADO_T2
HEAT_TEST USERS
原文地址：Heat Map and Automatic Data Optimization : part-2, 感谢原作者分享。