oracle error - ORA-00262: current log string of closed thread string cannot switch

ORA-00262:	current log string of closed thread string cannot switch
Cause:	The log cannot be cleared or manually archived because it is the current log of a closed thread, and it is not possible to switch logs so another log is current. All other logs for the thread need to be archived, or cleared, and cannot be reused.
Action:	Archive another log in the same thread first, or complete the clearing. See attached errors for the reason the switch cannot be completed.

oracle error - ORA-00261: log string of thread string is being archived or modified

ORA-00261:	log string of thread string is being archived or modified
Cause:	The log is either being archived by another process or an administrative command is modifying the log. Operations that modify the log include clearing, adding a member, dropping a member, renaming a member, and dropping the log.
Action:	Wait for the current operation to complete and try again.

ORA-00260:	cannot find online log sequence string for thread string
Cause:	The log sequence number supplied to the archival command does not match any of the online logs for the thread. The log might have been reused for another sequence number, it might have been dropped, the sequence number might be greater than the current log sequence number, or the thread might not have any logs.
Action:	Check the ARCHIVE statement, then specify a valid log sequence number. Specify a valid log sequence number.