oracle error- ORA-00960: ambiguous column naming in select list

Oracle error

ORA-00960: ambiguous column naming in select list

Cause: A column name in the order-by list matches more than one select list columns.

Action: Remove duplicate column naming in select list.

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oracle error- ORA-00956: missing or invalid auditing option

Oracle error

ORA-00956: missing or invalid auditing option

Cause: AUDIT or NOAUDIT statement contains an invalid auditing option.

Action: Use a valid option.

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oracle error- ORA-00953: missing or invalid index name

Oracle error

ORA-00953: missing or invalid index name

Cause: An index name of the form [ <identifier> . ] <identifier> is expected but not present. If OIDINDEX clause, index name must be <identifier>

Action: Enter an appropriate index name.

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