Oracle 常见操作

1. 调整临时文件大小

SQL> alter database tempfile '/u01/app/oracle/oradata/test/temp01.dbf' resize 20971520;

Database altered.

2. 查看临时文件大小

SQL> select tablespace_name,file_name,bytes from  dba_temp_files ;

TABLESPACE_NAME
------------------------------------------------------------
FILE_NAME
--------------------------------------------------------------------------------
     BYTES
----------
TEMP
/u01/app/oracle/oradata/test/temp01.dbf
  20971520

SQL> select tablespace_name,file_name,bytes/1024/1024 file_size,autoextensible from dba_temp_files;

TABLESPACE_NAME
------------------------------------------------------------
FILE_NAME
--------------------------------------------------------------------------------
 FILE_SIZE AUTOEX
---------- ------
TEMP
/u01/app/oracle/oradata/test/temp01.dbf

        20 YES

3. 把Oracle的select 语句输出到文件？

[oracle@sjk1 ~]$ sqlplus / as sysdba

SQL> spool '/tmp/abc.txt';    #打开输出到/tmp/abc.txt文件
SQL> select * from v$parameter;

…… ……

SQL> spool off;    #关闭输出到文件
SQL> exit