How to enable or disable replay functionality

How to enable or disable replay functionality for AIX, HP-UX, Solaris , linux.

for example if i did sqlplus '/as sysdba' and exit and after some time i do "r sql" then
sqlplus '/as sysdba' gets executed how is that done , how to enable or disable this feature.
umesh4expAsked:
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woolmilkporcConnect With a Mentor Commented:
Hi,

that feature is called 'command history' and is part of your shell, e.g. Korn Shell, regardless of the OS used.

If it's korn shell,  'r' is most probably an alias for the 'fc' command, which exists as a shell builtin as well as a binary file /usr/bin/fc.Check this by issuing 'alias r', and use 'man fc' to learn more.

You can control the size of the command history by setting the HISTSIZE variable, and you can set the location of the history file by setting the HISTFILE variable.

Disabling this feature is done by setting the 'nolog' option: 'set -o nolog'. If desired, set this option in your .profile.

Cheers

wmp

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gheistConnect With a Mentor Commented:
also you can use "script" command to record all terminal IO for debug purpose.
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