Error:
When connecting to RMAN, it generates output when any command is given, but the command is not completed and is waiting.
Reason:
Disruption in executable files.
Solution:
Close the database and recompile all executable files.
1 2  | $ cd $ORACLE_HOME/rdbms/lib $ make -f ins_rdbms.mk install  | 
Make sure that the permissions of the oracle binary file are 6751 (-rwsr-s-x) after this process.
1 2  | $ cd $ORACLE_HOME/bin $ chmod 6751 oracle  | 
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