My database is in archive mode.
I have a table that I altered to nologging. After a while(5 hours), I changed it back to logging. If the database is in archive log mode, will this have an impact on the redo logs and and the archival files? If so how, please explain.
I did as I have described above but now for the first time, I am receiving redo/archival error messages in my log file. eg:

ORA-00312: online log 1 thread 1: '/u09/ora02/DENVERDB/redoDENVERDB01.log'
ORA-27091: skgfqio: unable to queue I/O
ORA-16038: log 1 sequence# 17566 cannot be archived
ORA-00333: redo log read error block count
ORA-00333: redo log read error block 6273 count 128