List indexes which you named intentionally

Here’s a nice Oracle SQL script that lists indexes which you named on purpose.

SELECT index_name 
FROM all_indexes 
WHERE table_owner = 'SCHEME' --schema name
AND table_name = 'TABLE' --table name
AND index_name NOT LIKE 'SYS%';

if you comment out this part, this script lists all indexes.

AND index_name NOT LIKE 'SYS%';

Oracle prefixes “SYS_” constraints and indexes when u dont give names to them. That’s why we add the condition.