$ sqlplus "sys/xxxx@:1521/sid2 as sysdba"

SQL*Plus: Release 11.2.0.4.0 Production on Tue Sep 29 04:07:23 2015

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Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

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