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¡¡select username from dba_users;
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¡¡alter user spgroup identified by spgtest;
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¡¡select * from dba_data_files;
¡¡select * from dba_tablespaces;//±í¿Õ¼ä
¡¡select tablespace_name,sum(bytes), sum(blocks)
from dba_free_space group by tablespace_name;//¿ÕÏбí¿Õ¼ä
¡¡select * from dba_data_files
where tablespace_name='RBS';//±í¿Õ¼ä¶ÔÓ¦µÄÊý¾ÝÎļþ
¡¡select * from dba_segments
where tablespace_name='INDEXS';
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¡¡select * from dba_objects;
¡¡CLUSTER¡¢DATABASE LINK¡¢FUNCTION¡¢INDEX¡¢LIBRARY¡¢PACKAGE¡¢PACKAGE BODY¡¢
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¡¡select * from dba_tables;
¡¡analyze my_table compute statistics;->dba_tablesºó6ÁÐ
¡¡select extent_id,bytes from dba_extents
¡¡where segment_name='CUSTOMERS' and segment_type='TABLE'
¡¡order by extent_id;//±íʹÓõÄextentµÄÐÅÏ¢¡£segment_type='ROLLBACK'²é¿´»Ø¹ö¶ÎµÄ¿Õ¼ä·ÖÅäÐÅÏ¢
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select distinct table_name
from user_tab_columns
where column_name='SO_TYPE_ID';
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¡¡select * from dba_indexes;//Ë÷Òý£¬°üÀ¨Ö÷¼üË÷Òý
¡¡select * from dba_ind_columns;//Ë÷ÒýÁÐ
¡¡select i.index_name,i.uniqueness,c.column_name
from user_indexes i,user_ind_columns c
¡¡where i.index_name=c.index_name
¡¡and i.table_name ='ACC_NBR';//Áª½ÓʹÓÃ
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¡¡select * from dba_sequences;
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¡¡select * from dba_views;
¡¡select * from all_views;
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¡¡select * from dba_clusters;
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¡¡select * from dba_snapshots;
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¡¡select * from dba_synonyms
where table_owner='SPGROUP';
//if owner is PUBLIC,then the synonyms is a public synonym.
¡¡if owner is one of users,then the synonyms is a private synonym.
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¡¡select * from dba_db_links;
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¡¡connect to spnew identified by s


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