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How to make the email Address Dummy in Oracle Database?

How to make the email Address Dummy in Oracle Database? Query to make the email Address as dummy, update <tablename> set <Columnname> = '@' || <Columnname> where <Columnname>  is not null; Query to Remove the email Address as dummy, update <tablename> set <Columnname>= substr(<Columnname>,2,length(<Columnname>)) where <Columnname> is not null;
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How to clear screen in sqlplus

If you want to clear screen in sqlplus window there is small cmd that you need to remember which is below, SQL> select username from dba_users; USERNAME -------------------- BOCMS BOAUDIT  CKI8727 GRU9151 MNA9189 FRE9283  KKO8750  KMU8649 HME9041 ZLP1492 DBE9176  QRA8651  PFI8706 SQL> host cls Once you hit enter the screen will be cleared. SQL> select username from dba_users; USERNAME -------------------- BOCMS BOAUDIT  CKI8727 GRU9151 MNA9189 FRE9283  KKO8750  KMU8649 HME9041 ZLP1492 DBE9176  QRA8651  PFI8706 SQL>clear screen Once you hit enter the screen will be cleared.
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Upgrading Windows Server 2008 R2 with a command-line tool using DISM

Windows Server 2008 R2 includes a command-line tool called the Deployment Image Servicing and Management tool, or DISM. It's functionally equivalent to the Windows Anytime Upgrade feature in client versions of Windows. You can run it from an elevated command prompt. To determine the currently installed edition: DISM /online /Get-CurrentEdition To determine the editions you can upgrade to: DISM /online /Get-TargetEditions To actually perform an upgrade: DISM /online /Set-Edition:<edition ID> /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
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