Statements ran via SQL Editor Does Not Apply to the Current Session (4245382)

Running/executing statements in the SQL Editor window  does not apply to the current session, even though it was executed successfully.

For example;
If you run an alter statement such as
Alter session set NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';

After the statement is ran, the  NLS_DATE_FORMAT for the current session has not changed.

RESOLUTION #1:
Uncheck the following option under View | Options | Transactions | "Execute Queries in threads (Creates a separate session)"

RESOLUTION #2:
1. Create a .sql file that contains the Statement to be executed

For example
Alter session set NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';

2. Save this file in your local directory. i.e. C:\date.sql
3.  Select View  | Options  | Start up  | "File to AutoExecute on new connections"
4. Place the location of the created file in this appropriate location.
5. Re-start Toad.

Note: If the above #2 is performed, each time Toad creates a new connection, the alter statement or any statement in the file will be executed after the connection has been established.