How to fix the Oracle error ORA-01220: file based sort illegal before database is open?

In this post, you’ll learn more about the Oracle ErrorORA-01220: file based sort illegal before database is open with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01220: file based sort illegal before database is open

Reason for the Error ORA-01220: file based sort illegal before database is open

A query issued against a fixed table or view required a temporary segment for sorting before the database was open. Only in-memory sorts are supported before the database is open.

How to fix the Error ORA-01220: file based sort illegal before database is open ?

You can fix this error in Oracle by following the below steps

Re-phrase the query to avoid a large sort, increase the values of the SORT_AREA_SIZE and/or SORT_AREA_RETAINED_SIZE initialization parameters to enable the sort to be done in memory.