ORA-20000 Error in SYS schema
633045May 25 2008 — edited May 26 2008Dear All,
i frequently get this error in the alert log of a production database size of more than 4TB.
Tue Feb 26 22:00:26 2008
Errors in file /unisoft/ora10/admin/unidb/bdump/unidb_j000_29859.trc:
ORA-20000: index "SYS"."WRH$_ACTIVE_SESS_HIST_PK" or partition of such index is in unusable state
my concern is, when such error occurs in the SYS schema for index invalidation, is it safe to rebuild it online? what may be the cause of the error. The database version is 10.1.0.5.0 running in HP Unix.
Thanks in advance.