ORA-00600: internal error code, arguments: [qosdExpStatRead: expcnt mismatch], [

expdp导出报错！！ 打完补丁记着要开启 ORA-00600: internal error code, arguments: [qosdExpStatRead: expcnt mismatch], [65969], [433], [85888], [1], [], [], [], [], [], [], [] ---------- I confirmed there are two bugs to match this issue now. ORA-00600 [qosdExpStatRead: expcnt mismatch] will happen even after applied both patch 28681153 and patch 31143146, if you don't try the workaround of MOS  Note 28681153.8  at both CDB and PDB.  - ORA-600: [qosdexpstatread: expcnt mismatch] (  Doc ID 28681153.8  )  - ORA-600: [qosdexpstatread: expcnt mismatch] even after applying 28681153 (  Doc ID 31143146.8  ) Please follow these steps to check if the issue resolves. 1. Try workaround of MOS  Note 28681153.8  at both CDB and PDB. With b as ( select count(*) cnt,objn,snapshot_id from sys.exp_stat$ es group by objn,snapshot_id) select * from sys.exp_obj$ a, b where a.objn=b.objn and a.snapshot_id=b.snapshot_id and a.EXP_CNT<>b.CNT; delete from sys.exp_stat$ b where b.snapshot_id = <snapshot_id> and b.objn = <objn> ; update sys.exp_obj$ a set a.EXP_CNT=0 where a.SNAPSHOT_ID= <snapshot_id> and a.objn = <objn>; commit; 2. Run below SQL again to check the query result. "no rows return" is expected. With b as ( select count(*) cnt,objn,snapshot_id from sys.exp_stat$ es group by objn,snapshot_id) select * from sys.exp_obj$ a, b where a.objn=b.objn and a.snapshot_id=b.snapshot_id and a.EXP_CNT<>b.CNT; 3. Turn on the fix control of patch 31143146 as following: alter system set "_fix_control"='31143146:on' scope=both;