Managing Databases with Oracle
An Oracle System Change Number (SCN):

is incremented whenever a deadlock occurs.
is a value that is incremented whenever database changes are made.
is a value that keeps track of explicit locks.
is a value that is incremented whenever a dirty read occurs.

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Managing Databases with Oracle
In creating a procedure, you may get a message if you have compile errors. Which of the following is true?

To see the errors, enter SHOW ERRORS in SQL*Plus.
SQL*Plus will automatically show the errors to you.
If there are no syntax errors, you will receive the message "NO ERRORS."
The line numbers reported match the line numbers you see in your text editor.

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