Finding columns using all_tab_columns

I am using oracle 11g and i am having trouble finding a column name using all_tab_coulmns .Basically i dont know the exact name of the column and i used wild card in the where clause but i seems line wild card doesnt work.Could this be because of the reason that the column names are case sensitive.Query that i used is listed below.
select * from all_tab_columns where column_name='%sequence%'.What i wanted out of this query was, all the columns that have 'sequence' in it and FYI i used uppercase as well.

two things here
1. use like instead of =
2. column_name are stored in upper case in all_tab_columns
so write ur query as
select * from all_tab_columns where column_name like upper('%sequence%');

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A table say T1 contains column like Emp_id,Code.
and there are several Code like C1,C2,C3.
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Finding columns using all_tab_columns

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