Wed May 23 17:46:14 2018
TT01: Standby redo logfile selected for thread 1 sequence 42251 for destination LOG_ARCHIVE_DEST_10
Wed May 23 17:46:15 2018
Error ORA-235 occurred during an un-locked control file transaction. This
error can be ignored. The control file transaction will be retried.
----BUG
Bug 22562145 : FAILED BACKUP WITH ORA-07445 [KCBHFIX_TAIL+31]
Error ORA-235 occurred during an un-locked control file transaction. This
error can be ignored. The control file transaction will be retried
oracle 12c 12.1.0.2.0 BUG 22562145
原文：https://www.cnblogs.com/ss-33/p/9078277.html