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後最後重放WAL繼PostgreSQL的9.2官方文檔，我已經設置了連續歸檔在我postgres.conf文件：的PostgreSQL 9.2歸檔恢復
wal_level = archive
archive_mode = on
archive_command = 'test ! -f /.../archive/%f && cp %p /.../archive/%f'
一個成功的備份和恢復後，歸檔命令失敗時數據庫啓動是因爲PostgreSQL試圖歸檔最後一個重播的WAL文件，顯然它已經被歸檔了。我的recovery.conf文件如下：
restore_command = 'cp /.../archive/%f "%p"'
recovery_target_time = '2013-07-02 15:20:12'
這是當我嘗試啓動數據庫，我發現了錯誤：
LOG: database system was interrupted; last known up at 2013-07-02 14:53:37 CEST
LOG: creating missing WAL directory "pg_xlog/archive_status"
LOG: starting point-in-time recovery to 2013-07-02 15:20:12+02
LOG: restored log file "000000010000000000000002" from archive
LOG: redo starts at 0/2000020
LOG: consistent recovery state reached at 0/20023D0
LOG: restored log file "000000010000000000000003" from archive
LOG: recovery stopping before commit of transaction 4063, time 2013-07-02 15:20:12.211559+02
LOG: redo done at 0/306D8B8
LOG: last completed transaction was at log time 2013-07-02 15:20:11.189978+02
cp: cannot stat `/.../archive/00000002.history': No such file or directory
LOG: selected new timeline ID: 2
cp: cannot stat `/.../archive/00000001.history': No such file or directory
LOG: archive recovery complete
LOG: autovacuum launcher started
LOG: database system is ready to accept connections
LOG: archive command failed with exit code 1
DETAIL: The failed archive command was: test ! -f /.../archive/000000010000000000000003 && cp pg_xlog/000000010000000000000003 /.../archive/000000010000000000000003
LOG: archive command failed with exit code 1
DETAIL: The failed archive command was: test ! -f /.../archive/000000010000000000000003 && cp pg_xlog/000000010000000000000003 /.../archive/000000010000000000000003
LOG: archive command failed with exit code 1
DETAIL: The failed archive command was: test ! -f /.../archive/000000010000000000000003 && cp pg_xlog/000000010000000000000003 /.../archive/000000010000000000000003
WARNING: transaction log file "000000010000000000000003" could not be archived: too many failures
這是一個預期的行爲？最後重播的WAL文件是否應該在恢復後歸檔？如果是這樣，歸檔命令應該不會失敗，以防文件已被歸檔（如文檔中所述）。