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Ä£ºý²éѯoracleÖÐÓжàÉÙÕÅ±í£¿
select * from tabs;

select count(*) from tabs;

select sum(1) from all_all_tables;

select count(1) from dba_tales;
SELECT COUNT(1) from DBA_OBJECTS WHERE OBJECT_TYPE='TABLE';


SQL code:

SQL> select count(*) from user_tables;

COUNT(*)
----------
150




select count(*) from tabs ²éѯµ±Ç°Óû§ÏµıíÊýÁ¿
select count(*) from dba_tables »òÕß all_tables ²éѯϵͳÏÂËùÓбíÊýÁ¿

select count(TNAME) from tab where TTYPE='TABLE'
Óû§Ï»¹ÓÐÊÓͼ£¬Í¬Ãû´Ê£¡


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exp user/password@dbname file=c:\table.dmp tables=jbitaku,jbitakum grants=y
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SQL>SELECT SEQUENCE#,APPLIED from V$ARCHIVED_LOG ORDER BY SEQUENCE#;
 SEQUENCE# APP
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