How to resolve ORA-01700 Error Message in Oracle database

Learn the reason and how to get to the bottom of the ORA-01700 error message in Oracle.

Description

When you encounter an ORA-01700 error, the following error message will appear:

ORA-01700: duplicate username in list

Cause

You tried to execute a GRANT or REVOKE declaration and listed the same username more than once.

Resolution

The option(s) to resolve this Oracle error are:

Option #1

Remove the reproduction username from the supply or revoke statement and re-execute the command.

For example, if you tried to execute the following GRANT:

GRANT SELECT ON suppliers TO smithj, andersonb, smithj;

You would receive the following error message:

You may want to correct this error via casting off the 2d occasion of smithj, as follows:

GRANT SELECT ON suppliers TO smithj, andersonb;