oracle数据库查看所有表情况

1.oracle数据库查看所有表：
select t.table_name,t.num_rows from user_tables t ;
2.、查看表空间的名称及大小 SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size FROM dba_tablespaces t, dba_data_files d WHERE t.tablespace_name = d.tablespace_name GROUP BY t.tablespace_name;
3、查看表空间物理文件的名称及大小
SELECT tablespace_name, file_id, file_name, round(bytes / (1024 * 1024), 0) total_space FROM dba_data_files ORDER BY tablespace_name;
4、查看回滚段名称及大小 SELECT segment_name, tablespace_name, r.status, (initial_extent / 1024) initialextent, (next_extent / 1024) nextextent, max_extents, v.curext curextent FROM dba_rollback_segs r, v$rollstatvWHEREr.segmen{t}_{i}d=v.usn(+)ORDERBYsegmen{t}_{n}ame;5、查看控制文件SELECTNAMEFROMv$controlfile;
6、查看日志文件 SELECT MEMBER FROM v$logfile;7、查看表空间的使用情况SELECTSUM(bytes)/(1024\ast 1024)ASfre{e}_{s}pace,tablespac{e}_{n}ameFROMdb{a}_{f}re{e}_{s}paceGROUPBYtablespac{e}_{n}ame;SELECTa.tablespac{e}_{n}ame,a.bytestotal,b.bytesused,c.bytesfree,(b.bytes\ast 100)/a.bytes"$ts_avail a, sys.sm$t{s}_{u}sedb,sys.sm$ts_free c WHERE a.tablespace_name = b.tablespace_name AND a.tablespace_name = c.tablespace_name;
8、查看数据库库对象 SELECT owner, object_type, status, COUNT(*) count# FROM all_objects GROUP BY owner, object_type, status;
9、查看数据库的版本　 SELECT version FROM product_component_version WHERE substr(product, 1, 6) = ‘Oracle’;
10、查看数据库的创建日期和归档方式 SELECT created, log_mode, log_mode FROM v$database;