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Oracle® Database 11g / 12c / 18c error codes ORA-01546: tablespace contains active rollback segment '[string]'
ORA-01546: tablespace contains active rollback segment '[string]'
Oracle Error Code: ORA-01546
Cause: Tried to make a tablespace that contains active rollback segment(s) offline or read only
Action: Shutdown instances that use the active rollback segments in the tablespace and then make the tablespace offline or read only