How to fix the Oracle error ORA-30026: Undo tablespace ‘string’ has unexpired undo with string(sec) left, Undo_Retention=string(sec)?

In this post, you’ll learn more about the Oracle ErrorORA-30026: Undo tablespace ‘string’ has unexpired undo with string(sec) left, Undo_Retention=string(sec) with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30026: Undo tablespace ‘string’ has unexpired undo with string(sec) left, Undo_Retention=string(sec)

Reason for the Error ORA-30026: Undo tablespace ‘string’ has unexpired undo with string(sec) left, Undo_Retention=string(sec)

Tried to drop a tablespace that contains unexpired undo information

How to fix the Error ORA-30026: Undo tablespace ‘string’ has unexpired undo with string(sec) left, Undo_Retention=string(sec) ?

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

lower setting of UNDO_RETENTION or wait a while before reissue command to drop undo tablespace