今天在使用oracle的expdp工具导出数据时，数据没有导出，导出日志如下
oracle@test export]$ expdp system/oracle directory=DUMP_APP_BASE dumpfile=DUMP_APP_BASE.dmp logfile=DUMP_APP_BASE.log schemas=test
Export: Release 10.2.0.5.0 - 64bit Production on Thursday, 15 October, 2020 14:55:03
Copyright (c) 2003, 2007, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, Data Mining and Real Application Testing options
[oracle@test export]$ ll
total 4
-rw-r--r-- 1 oracle oinstall 315 Oct 15 14:55 DUMP_APP_BASE.log
[oracle@test export]$ more DUMP_APP_BASE.log
;;;
Export: Release 10.2.0.5.0 - 64bit Production on Thursday, 15 October, 2020 14:55:03
Copyright (c) 2003, 2007, Oracle. All rights reserved.
;;;
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, Data Mining and Real Application Testing options原因是因为临时表空间不可用，后重新修改默认临时表空间，解决问题。