Database has been modified.  Save changes?

After the execution of some commands and try to close SQL Developer, he always asks me "database has been modified.  Save changes? ».  Most of the time I only use select statements.  Is it safe to answer yes/no?  What happens if I have made an update to a table.  It will get rid of updates, even if I issued the commit; command?

Thank you.

In the case of only making selects, this prior discussion comments should enlighten us:

Validation required after a selection on Dblink

And if you do your own agrees, of course, pending DML changes are involved - you answer "No" to an offer to record is then irrelevant.

Tags: Database

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