pl sql exist 2 spaces between the names

I have the certainty that in some values ¿¿in this column S_FIRST_NAME exist 2 spaces between the names.

How I can know if 2 or more spaces with other S_LAST_NAME column, this data is important before modifying my stored procedure.
enrique_aeoAsked:
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Steve WalesSenior Database AdministratorCommented:
Something simple like

select S_LAST_NAME from table where S_LAST_NAME like '%  %'

would find you two or more spaces in a column.

(That is two spaces in between the percent signs).
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awking00Commented:
where instr(name,'  ') > 0
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