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The process for converting a string value to a date datatype in Oracle is to use the TO_DATE function.
The syntax for the TO_DATE function is as follows:
TO_DATE(string, format)
where - string: the string value to be converted to a date datatype - format: the format of the string value
For example, let's say you have a string value '2021-09-15' and you want to convert it to a date datatype:
TO_DATE('2021-09-15', 'YYYY-MM-DD')
This will convert the string value '2021-09-15' to a date datatype in the format of 'YYYY-MM-DD'.
Note: The format parameter should match the format of the string value being converted. If the format does not match, the conversion will fail.