1. 使用oracle的工具dbfsize
[AIXP55A:oracle:/oracle/product/9.2.0/dbs]>dbfsize ./db_control1
Database file: ./db_control1
Database file type: raw device without 4K starting offset
Database file size: 286 8192 byte blocks
2.执行完下面的SQL语句，再到user_dump_dest目录查看刚产生的trc文件
SQL> ALTER SESSION SET EVENTS 'IMMEDIATE TRACE NAME CONTROLF LEVEL 10';
DUMP OF CONTROL FILES, Seq # 62704 = 0xf4f0
V10 STYLE FILE HEADER:
Compatibility Vsn = 169870080=0xa200300
Db ID=1714783872=0x66358680, Db Name='WEBDATA'
Activation ID=0=0x0
Control Seq=62704=0xf4f0, File size=438=0x1b6
File Number=0, Blksiz=16384, File Type=1 CONTROL
438*16384+16384=7192576bytes 这就是控制文件的大小