[oracle@upright92 ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue May 22 10:39:34 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining
and Real Application Testing options
SQL> conn "wqq"/wqq
Connected.
[oracle@upright92 ~]$ sqlplus "wqq"/wqq
SQL*Plus: Release 11.2.0.4.0 Production on Tue May 22 10:39:18 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining
and Real Application Testing options
[oracle@upright92 ~]$ sqlplus '"wqq"/wqq'
SQL*Plus: Release 11.2.0.4.0 Production on Tue May 22 10:22:22 2018
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining
and Real Application Testing options
[oracle@upright92 ~]$ exp '"wqq"/wqq' file=2.dump tables=tab GRANTS=Y
Export: Release 11.2.0.4.0 - Production on Tue May 22 10:34:09 2018
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Oracle Label Security, OLAP, Data Mining
and Real Application Testing options
Export done in US7ASCII character set and AL16UTF16 NCHAR character set
server uses AL32UTF8 character set (possible charset conversion)
About to export specified tables via Conventional Path ...
. . exporting table TAB 0 rows exported
Export terminated successfully without warnings.