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set echo [SQL*Plus]

set echo on | off
With echo it is possible to control if echoing of SQL statements and SQL*Plus commands is enabled or not.
If echo is set to off, SQL statements that are run will not be displayed while setting echo to on will display them.
See also set termout.

Storing settings across sessions

Settings (such as sqlpluscompatibility) can be stored accross sessions with the glogin.sql and/or login.sql file.