PostgreSQL停止動作觀察

實驗過程如下：

啟動乙個客戶端：

[

postgres@cnrd56 bin
]$ ./
psql
psql (
9.1.2
)type "help" 
forhelp.
postgres
=# begin
;begin
postgres
=# select
count(*), pg_sleep(1000) from test;

然後強制停止:

pg_ctl stop -m f  -d /usr/local/pgsql/data

此時在客戶端出現如下資訊：

fatal:  terminating connection due to

administrator command
the connection 
tothe server was lost. attempting reset: failed.
!>

再看後台的log:

2013-07

-1410:17:17.280 cst,,,3422,,51e209eb.d5e,2,,2013-07
-1410:16:11 cst,,0,log,00000,"received fast shutdown
request",,,,,,,,,""
2013-07
-1410:17:17.280 cst,,,3422,,51e209eb.d5e,3,,2013-07
-1410:16:11 cst,,0,log,00000,"aborting any
active transactions",,,,,,,,,""
2013-07
-1410:17:17.280 cst,,,3427,,51e209ec.d63,2,,2013-07
-1410:16:12 cst,1
/0,0,log,00000
,"autovacuum launcher shutting down",,,,,,,,,""
2013-07
-1410:17:17.280 cst,"postgres","postgres",3431,"[
local
]",51e209ff.d67,1,"select",2013-07
-1410:16:31 cst,2
/2,0,fatal,57p01,"terminating connection due to administrator command",,,,,,"select
count(*), pg_sleep(1000) from
test;",,,"psql"
2013-07
-1410:17:17.281 cst,,,3425,,51e209ec.d61,1,,2013-07
-1410:16:12 cst,,0,log,00000
,"shutting down",,,,,,,,,""
2013-07
-1410:17:17.281 cst,"postgres","postgres",3435,"[
local
]",51e20a2d.d6b,1,"",2013-07
-1410:17:17 cst,,0,fatal,57p03,"the database system is
shutting down",,,,,,,,,""
2013-07
-1410:17:17.284 cst,,,3425,,51e209ec.d61,2,,2013-07
-1410:16:12 cst,,0,log,00000,"database system is shut down",,,,,,,,,""

其中的：

2013-07

-1410:17:17.280 cst,"postgres","postgres",3431,"[
local
]",51e209ff.d67,1,"select",2013-07
-1410:16:31 cst,2
/2,0,fatal,57p01,"terminating connection due to administrator command",,,,,,"select
count(*), pg_sleep(1000) from test;",,,"psql"

表明，客戶端正在執行sql文 select count(*), pg_sleep(1000) from test的時候，

收到了 "terminating connection due to administrator command" 命令。

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