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ARC0: Beginning to archive log# 2 seq# 1400
ARC0: Failed to archive log# 2 seq# 1400
Mon May 21 11:11:59 2001
ARCH: Completed archiving log# 2 seq# 1400
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There are many reasons why Archive process failed to archive log file:

1 REDO LOG may be small, so that frequent switch occurs. This leads to ARCH works slowly. Increase the size.

2 If the REDO files are mirrored (duplexed) and they are kept in RAID, then also ARCH will fail because when one of the REDO Log is filled, Oracle instructs ARCH to start archive. Then ARCH process tries to read the 2nd member of the REDO LOG file, which is not yet written by the DISK controller. Hence, ARCH process fails. To over come, do not keep the redo log files in RAID, keep them non-mirrored /striped disk.

3.Avoid SW level and HW level mirroring of redo log files