由於日期格式的不同,PostgreSQL在執行恢復讀取recovery.conf的時候會出現問題.
**錯誤資訊**
在recovery.conf檔案,recovery_target_time的設定
```
recovery_target_time='2019-3-11 14:40:00'
```
如按上述設定,則會出現錯誤
```
[xdb@localhost testdb]$ pg_ctl start
waiting for server to start....2019-03-11 14:04:45.121 CST [21749] LOG:  listening on IPv4 address "0.0.0.0", port 5432
2019-03-11 14:04:45.121 CST [21749] LOG:  listening on IPv6 address "::", port 5432
2019-03-11 14:04:45.123 CST [21749] LOG:  listening on Unix socket "/tmp/.s.PGSQL.5432"
2019-03-11 14:04:45.135 CST [21749] LOG:  redirecting log output to logging collector process
2019-03-11 14:04:45.135 CST [21749] HINT:  Future log output will appear in directory "log".
 stopped waiting
pg_ctl: could not start server
Examine the log output.

```
日誌提示
```
[xdb@localhost log]$ cat postgresql-2019-03-11_122129.csv
2019-03-11 12:21:29.233 CST,,,1680,,5c85e249.690,1,,2019-03-11 12:21:29 CST,,0,LOG,00000,"ending log output to stderr",,"Futu
2019-03-11 12:21:29.236 CST,,,1682,,5c85e249.692,1,,2019-03-11 12:21:29 CST,,0,LOG,00000,"database system was interrupted; la
2019-03-11 12:21:29.249 CST,,,1682,,5c85e249.692,2,,2019-03-11 12:21:29 CST,,0,FATAL,42601,"syntax error in file ""recovery.c
2019-03-11 12:21:29.250 CST,,,1680,,5c85e249.690,2,,2019-03-11 12:21:29 CST,,0,LOG,00000,"startup process (PID 1682) exited w
2019-03-11 12:21:29.250 CST,,,1680,,5c85e249.690,3,,2019-03-11 12:21:29 CST,,0,LOG,00000,"aborting startup due to startup pro
2019-03-11 12:21:29.252 CST,,,1680,,5c85e249.690,4,,2019-03-11 12:21:29 CST,,0,LOG,00000,"database system is shut down",,,,,,

```
在recovery.conf檔案的第3行有語法錯誤,猜測是日期格式問題

**日期格式**
```
testdb=# show datestyle;
 DateStyle 
-----------
 ISO, MDY
(1 row)

```
PG日期格式為月-日-年,recovery.conf檔案的日期調整為該格式即可解決上述問題.

**參考資料**
[Base Backup & Point-in-Time Recovery](http://www.interdb.jp/pg/pgsql10.html)

PostgreSQL DBA(29) - Backup&Recovery#2(日期格式導致的錯誤)

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