创建:
[oracle@Server root]$ sqlplus / as sysdba SQL> CREATE TABLESPACE test DATAFILE '/data/oracle/oradata/test.dbf' SIZE 500M AUTOEXTEND ON NEXT 50M MAXSIZE UNLIMITED; Tablespace created. SQL> ALTER tablespace test ADD datafile '/data/oracle/oradata/test02.dbf' SIZE 1G AUTOEXTEND ON NEXT 200M MAXSIZE 8G; Tablespace altered. SQL> CREATE user test identified by test default tablespace test temporary tablespace TEMP profile DEFAULT; User created. SQL> Grant dba to test; Grant succeeded. SQL>
修改用户表空间:
SQL> alter user user2space default tablespace user2space2;
删除:
--删除表空间。
SQL> drop tablespace test;
SQL> drop tablespace test including contents;
SQL> drop tablespace test including contents and datafiles;
SQL> drop user user2space cascade;
加上and datafiles 参数时,oracle会自动删除datafiles。
备份、还原
创建dump_dir目录,给表空间对应的用户赋上读写权限,如果不创建数据文件将导出到默认的实例下面有个 dpdump 目录中,导入同样在放到这目录下面。
SQL> create directory dump_dir as '/data/oracle'; Directory created. SQL> grant read,write on directory dump_dir to user1;
备份【导出】
[oracle@SERVER oracle]$ expdp user1/pwd@orcl schemas=user1 directory=dump_dir dumpfile=user1stschema.dmp compression=all logfile=user1.dmp.log
还原【导入】
[oracle@SERVER oracle]$ impdp user2/pwd@orcl DIRECTORY=dump_dir DUMPFILE=user1stschema.dmp REMAP_SCHEMA=user1:user2 REMAP_TABLESPACE=user1:user2 table_exists_action=replace logfile=user2.dmp.log
使用sql语句验证刚才创建的表及表空间:
SELECT username,default_tablespace FROM dba_users;
参数说明:
后续补充