在11.2.0.2的环境中，碰到了这个问题，使用REVOKE UNLIMITED TABLESPACE命令后，发现设置的用户QUOTA也消失了。

这是一个实际的案例，在客户的环境中新建了一个用户，准备导入一些数据，结果碰到了问题：

SQL> create user thams account unlock identified by thams default tablespace LOB_AU2M quota unlimited on LOB_AU2M;

User created.

SQL> grant connect,resource to thams;

Grant succeeded.

SQL> grant create view,create synonym,create database link to thams;

Grant succeeded.

SQL> revoke unlimited tablespace from thams;

Revoke succeeded.

SQL> grant read,write on directory expdir to thams;

Grant succeeded.

SQL> exitITPUB个人空间 eh:ewn}h
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
'[#`;MaG196700With the Partitioning, Automatic Storage Management, OLAP, Data Mining
3ucxyk'p:mA
m{196700and Real Application Testing optionsITPUB个人空间
{W2z/D+pd.ivT?
[oracle@dbserver1 oracle-export]$ impdp thams/thams dumpfile=AMS-ORA9_20110815_2.DP logfile=AMS-ORA9_20110815_2_imp.log directory=expdir remap_tablespace=THAMS:LOB_AU2M remap_tablespace=users:lob_au2m

Import: Release 11.2.0.2.0 - Production on Tue Aug 16 12:36:41 2011

Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit ProductionITPUB个人空间,Al:VHs[
v4E
With the Partitioning, Automatic Storage Management, OLAP, Data MiningITPUB个人空间$C:cl0H*W(qB
and Real Application Testing optionsITPUB个人空间'?3G)z'B6X,u)pC8TTL
ORA-39006: internal error
K4d S;m#W
C196700ORA-39068: invalid master table data in row with PROCESS_ORDER=-4
#`-}l)CK,n9q196700ORA-01536: space quota exceeded for tablespace 'LOB_AU2M'

ORA-39097: Data Pump job encountered unexpected error -1536

刚看到这个错误的时候十分疑惑，明明在创建用户的时候指定了LOB_AU2M表空间上的无限制的QUOTA，怎会仍然会出现这个错误呢。

但是检查数据库，确实没有发现无限QUOTA的存在：

[oracle@dbserver1 oracle-export]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.2.0 Production on Tue Aug 16 12:38:29 2011

Copyright (c) 1982, 2010, Oracle. All rights reserved.

Connected to:ITPUB个人空间hsk2r~x E"TG
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
E?!mNh8x196700With the Partitioning, Automatic Storage Management, OLAP, Data Mining
n-K0FQrhO0M7[1d ia%M196700and Real Application Testing options

SQL> set pages 100 lines 120
0qN,YmP-O
}b