--Oracle查看錶空間大小(單位不是GB)
SELECT
a.tablespace_name, --表空間名
total, --表空間大小
free, --表空間剩餘大小
(total-free), --表空間使用大小
Round((total-free)/total,4)*100 --使用率
FROM (SELECT tablespace_name,Sum(bytes) free
FROM DBA_FREE_SPACE
GROUP BY tablespace_name) a,
(SELECT tablespace_name,Sum(bytes) total
FROM DBA_DATA_FILES
GROUP BY tablespace_name)b

WHERE
a.tablespace_name=b.tablespace_name;

--Oracle查看錶空間當前使用者
select username,default_tablespace
from user_users;


--Oracle查看錶所屬表空間
SELECT TABLE_NAME,TABLESPACE_NAME
FROM USER_TABLES
WHERE TABLE_NAME='test_table';

--Oracle查看錶空間大小-單位GB
SELECT
a.tablespace_name,
total,
free,
(total-free),
total/(1024*1024*1024),
free/(1024*1024*1024),
(total-free)/(1024*1024*1024),
round((total-free)/total,4)*100
FROM (SELECT tablespace_name,SUM(bytes) free
FROM dba_free_space
GROUP BY tablespace_name)a,
(SELECT tablespace_name,SUM(bytes) total
FROM dba_data_files
GROUP BY tablespace_name)b
WHERE a.tablespace_name=b.tablespace_name;

 

--檢視資料庫表空間名稱

select file_name, tablespace_name ,bytes from dba_data_files;

點選這裡	點選這裡	點選這裡	點選這裡
	FILE_NAME	TABLESPACE_NAME	BYTES
1	/oracledata/orcl/users01.dbf	USERS	82575360
2	/oracledata/orcl/sysaux01.dbf	SYSAUX	429916160
3	/oracledata/orcl/undot2.dbf	UNDOTV2	1761607680
4	/oracledata/orcl/system01.dbf	SYSTEM	597688320
5	/oracledata/orcl/emsc01.dbf	EMSC	629145600
6	/oracledata/orcl/seal01.dbf	SEAL	524288000
9	/oracledata/orcl/E:ORACLEORADATAORCLhnsap.dbf	HNSAPSPACE1	1153433600

--檢視資料庫所有的表名稱和每張表所對應的資料條數
select t.table_name ,t.num_rows from user_tables t;

 

點選這裡	點選這裡	點選這裡
	TABLE_NAME	NUM_ROWS
1	CLIENT_SOFT_UPDATE_RECORD	278
2	MDENCE_STAMP	0
3	TD_P_ROLE	0
4	TD_X_STAFF	5
5	PORC_EXECUTE_RECORD	2185
6	CLIENT_GROUP_BINDING	79
7	CLIENT_SOFT_UPDATE	19
8	AUDIT_DAY_AMOUNT	22
9	AUDIT_DAY_BWS_DETAIL	97
10	AUDIT_HELLY_DAY	0
11	AUDIT_HELLY_DETAIL	0
12	AUDIT_RULE	3496
13	AUDIT_RULE_ORG	874
14	ID_CARD_INFO	417
15	BILL_USER_CHECK_INFO	4268
17	BUSINESS_DICT	0
18	BUSINESS_INFO	946