To Grant Read only access on v$ tables to User

SQL*Plus: Release 12.1.0.2.0 Production on Thu Mar 31 02:51:14 2016

Copyright (c) 1982, 2014, Oracle.  All rights reserved.


Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Advanced Analytics and Real Application Testing options

SQL> grant select on v$instance to gnos;
grant select on v$instance to cognos
                *
ERROR at line 1:
ORA-02030: can only select from fixed tables/views


SQL> select owner, object_name from dba_objects where object_name in ('V$INSTANCE','V$DATABASE');

OWNER                 OBJECT_NAME

--------------------------------------------------------------------------------
PUBLIC                  V$DATABASE

PUBLIC                  V$INSTANCE





SQL> SELECT TABLE_OWNER,TABLE_NAME FROM DBA_SYNONYMS  where SYNONYM_NAME in ('V$INSTANCE','V$DATABASE');

TABLE_OWNER                       TABLE_NAME

--------------------------------------------------------------------------------
SYS                              V_$DATABASE

SYS                              V_$INSTANCE


SQL> grant select on V_$DATABASE to gnos;

Grant succeeded.

SQL>  grant select on V_$INSTANCE to gnos;

Grant succeeded.

SQL> exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Advanced Analytics and Real Application Testing options