1.19c 强制使用cdb/pdb ,带来了很多新的问题和新的特性，先发2篇文档，
1.监控sql:
1.1
https://dbaclass.com/article/tablespace-monitoring-in-12c-multitenant-database/
Tablespace Monitoring In Oracle 12c Multitenant Database.
You can use this script to check tablespace space details in 12c Multitenant database. It will provide information of both root CDB and PDB.
SET LINES 132 PAGES 100 COL con_name FORM A15 HEAD "Container|Name" COL tablespace_name FORM A15 COL fsm FORM 999,999,999,999 HEAD "Free|Space Meg." COL apm FORM 999,999,999,999 HEAD "Alloc|Space Meg." -- COMPUTE SUM OF fsm apm ON REPORT BREAK ON REPORT ON con_id ON con_name ON tablespace_name -- WITH x AS (SELECT c1.con_id, cf1.tablespace_name, SUM(cf1.bytes)/1024/1024 fsm FROM cdb_free_space cf1 ,v$containers c1 WHERE cf1.con_id = c1.con_id GROUP BY c1.con_id, cf1.tablespace_name), y AS (SELECT c2.con_id, cd.tablespace_name, SUM(cd.bytes)/1024/1024 apm FROM cdb_data_files cd ,v$containers c2 WHERE cd.con_id = c2.con_id GROUP BY c2.con_id ,cd.tablespace_name) SELECT x.con_id, v.name con_name, x.tablespace_name, x.fsm, y.apm FROM x, y, v$containers v WHERE x.con_id = y.con_id AND x.tablespace_name = y.tablespace_name AND v.con_id = y.con_id UNION SELECT vc2.con_id, vc2.name, tf.tablespace_name, null, SUM(tf.bytes)/1024/1024 FROM v$containers vc2, cdb_temp_files tf WHERE vc2.con_id = tf.con_id GROUP BY vc2.con_id, vc2.name, tf.tablespace_name ORDER BY 1, 2;
OUTPUT
Container Free Alloc CON_ID Name TABLESPACE_NAME Space Meg. Space Meg. ---------- --------------- --------------- ---------------- ---------------- 1 CDB$ROOT CHARSETCONVERSI 199 200 ON PRODUCING 99 100 SYSAUX 382 920 SYSTEM 3 810 TEMP 197 TEST_ENCRY 2,047 2,048 UNDOTBS1 360 405 USERS 4 5 5 PROD_MN SYSAUX 253 570 SYSTEM 1 270 TEMP 20 ********** *************** *************** ---------------- ---------------- sum 3,347 5,545 11 rows selected.
1.2 更多详细信息如下：
sqlplus 格式化输出，方便查看表空间信息，
SQL> set linesize 999
SQL> set feed off
SQL> column tbspce format A30
SQL> col container for a30
执行如下sql:
SQL>
select substr(f.tablespace_name,1,30) tbspce,
round(f.tsbytes/(1024*1024),0) "ALLOCATED(MB)",
round(nvl(s.segbytes,0)/(1024*1024),0) "USED(MB)",
round((nvl(s.segbytes,0)/f.tsbytes)*100,2) "use_%",
round((nvl(s.segbytes,0)/f.txmaxbytes)*100,2) "maxuse_%",
lower(vc.name) as container
from
(select con_id,tablespace_name,sum(bytes) tsbytes,sum(MAXBYTES) txmaxbytes from cdb_data_files group by con_id,tablespace_name) f,
(select con_id,tablespace_name,sum(bytes) segbytes from cdb_segments group by con_id,tablespace_name) s,
v$containers vc
where f.con_id=s.con_id(+)
and f.tablespace_name=s.tablespace_name(+)
and f.con_id=vc.con_id
order by container, tbspce;
2.https://www.thegeekdiary.com/script-to-get-tablespace-utilization-in-oracle-database-12c/
Script To Get Tablespace Utilization In Oracle Database 12c
This is a script to get the tablespace utilization in Oracle Database 12c. You can use this script to get the tablespace utilization ALLOCATED(MB), USED(MB) and Used parentage for all containers tablespaces.
sqlplus -s / as sysdba
set pages 80
set lin 120
set echo off
set feed off
column PCT format 999.99
column tbspce format A30
col container for a30
select substr(f.tablespace_name,1,30) tbspce,
round(f.tsbytes/(1024*1024),0) "ALLOCATED(MB)",
round(nvl(s.segbytes,0)/(1024*1024),0) "USED(MB)",
round((nvl(s.segbytes,0)/f.tsbytes)*100,2) PCT,
lower(vc.name) as container
from
(select con_id,tablespace_name,sum(bytes) tsbytes from cdb_data_files group by con_id,tablespace_name) f,
(select con_id,tablespace_name,sum(bytes) segbytes from cdb_segments group by con_id,tablespace_name) s,
v$containers vc
where f.con_id=s.con_id(+)
and f.tablespace_name=s.tablespace_name(+)
and f.con_id=vc.con_id
order by container, tbspce;
3.https://orahow.com/tablespace-utilization-in-oracle/
Tablespace Utilization In Oracle Multitenant Database
You must be familiar with checking tablespace utilization in Oracle 11g, here we will discuss about monitoring tablespace in CDB and PDB.
Oracle introduced multitenant architecture from Oracle 12c and in other higher versions like 19c which contains container and pluggable databases CDB and PDB.
There are some new views introduced in 12c multitenant architecture to check size of datafiles and tempfiles tablespace used in CDB and PDB in Oracle database. We have used these views in below below script for monitoring tablespace usage in Oracle.
- cdb_data_files
- cdb_segments
- v$containers
Script to Monitor Tablespace Utilization in Oracle 12c, 19c and other higher versions.
set pages 80
set lin 120
set echo off
set feed off
column PCT format 999.99
column tablespace format A30
col container for a30
select substr(t.tablespace_name,1,30) tablespace,
round(t.tsbytes/(10241024),0) "ALLOCATED(MB)", round(nvl(s.segbytes,0)/(10241024),0) "USED(MB)",
round((nvl(s.segbytes,0)/t.tsbytes)*100,2) PCT,
lower(vc.name) as container
from
(select con_id,tablespace_name,sum(bytes) tsbytes from cdb_data_files group by con_id,tablespace_name) t,
(select con_id,tablespace_name,sum(bytes) segbytes from cdb_segments group by con_id,tablespace_name) s,
v$containers vc
where t.con_id=s.con_id(+)
and t.tablespace_name=s.tablespace_name(+)
and t.con_id=vc.con_id
order by container, tablespace;
TABLESPACE ALLOCATED(MB) USED(MB) PCT CONTAINER
------------- ------- ------ --------
SYSAUX 1630 1268 77.78 cdb$root
SYSTEM 1250 1244 99.55 cdb$root
UNDOTBS1 545 17 3.18 cdb$root
USERS 8 6 78.33 cdb$root
APPS_TS_ARCHIVE 5986 489 8.17 tst31ut
APPS_TS_INTERFACE 1041 431 41.43 tst31ut
APPS_TS_MEDIA 40394 38294 94.80 tst31ut
Check Tablespace Usage Percentage in Oracle PDB and CDB Database.
set line 200 pages 999
column name for a10
column tablespace_name for a15
column "MAXSIZE (MB)" format 9,999,990.00
column "ALLOC (MB)" format 9,999,990.00
column "USED (MB)" format 9,999,990.00
column "PERC_USED" format 99.00
select a.con_id,c.name,b.tablespace_name,a.bytes_alloc/(10241024) "MAXSIZE (MB)", nvl(a.physical_bytes,0)/(10241024) "ALLOC (MB)" ,nvl(b.tot_used,0)/(10241024) "USED (MB)" ,(nvl(b.tot_used,0)/a.bytes_alloc)100 "PERC_USED"
from
(select con_id,tablespace_name, sum(bytes) physical_bytes,sum(decode(autoextensible,'NO',bytes,'YES',maxbytes)) bytes_alloc
from cdb_data_files group by con_id,tablespace_name ) a,
(select con_id,tablespace_name, sum(bytes) tot_used from cdb_segments group by con_id,tablespace_name ) b,
(select name,con_id from v$containers) c
where a.con_id= b.con_id and a.con_id = c.con_id and a.tablespace_name = b.tablespace_name (+)
order by 1,3;
CON_ID NAME TABLESPACE_NAME MAXSIZE (MB) ALLOC (MB) USED (MB) PERC_USED
--------------- ------------ ----------- ---------------- --------------
1 CDB$ROOT SYSAUX 32,767.98 1,630.00 1,274.00 3.89
1 CDB$ROOT SYSTEM 32,767.98 1,250.00 1,244.38 3.80
1 CDB$ROOT UNDOTBS1 32,767.98 545.00 17.25 .05
1 CDB$ROOT USERS 32,767.98 7.50 5.88 .02
3 tst31ut APPS_TS_ARCHIVE 21,346.00 5,986.00 489.25 2.29
3 tst31ut APPS_TS_INTERFA 1,041.00 1,041.00 431.25 41.43
To Check how much Space Used in Oracle
select sum(BYTES)/1024/1024/1024 from cdb_segments; SUM(BYTES)/1024/1024/1024 ----------------- 310.454269 select CON_ID,sum(BYTES)/1024/1024/1024 from cdb_segments group by CON_ID; CON_ID SUM(BYTES)/1024/1024/1024 ------- -------------- 1 2.47595215 -CDB Size 3 307.978317 -PDB Size
To Check Datafile Size in Oracle
col FILE_NAME for a55 set lines 200 select FILE_NAME,BYTES/1024/1024/1024, MAXBYTES/1024/1024/1024,AUTOEXTENSIBLE from cdb_data_files where TABLESPACE_NAME='APPS_TS_MEDIA'; FILE_NAME BYTES/1024/1024/1024 MAXBYTES/1024/1024/1024 AUT /scratch/u01/E-BIZ/db/apps_st/data/a_media01.dbf 1.41210938 0 NO /scratch/u01/E-BIZ/db/apps_st/data/a_media03.dbf 18.8696289 20 YES /scratch/u01/E-BIZ/db/apps_st/data/a_media02.dbf 19.1652832 30 YES
Conclusion: Above script is used to check tablespace details in Oracle including tablespace size, freespace, percentage used etc.