<?php
$c = pg_connect( $connectionString, PGSQL_CONNECT_FORCE_NEW );
$queries = array (
"SELECT COUNT(*) AS data FROM articles",
"SELECT * FROM posts WHERE visible = TRUE",
"SELECT * FROM countries WHERE visible = FALSE",
"SELECT * FROM types WHERE visible = TRUE"
);
foreach ( $queries as $query ) {
$res = @pg_query( $c, $query );
if ( empty( $res ) ) {
echo "[ERR] " . pg_last_error( $c ) . "\n";
} else {
echo "[OK]\n";
}
}
上面的代码片段是第一次生成:
[OK]
[OK]
[OK]
[OK]
但这已经是第二次了:
[OK]
[OK]
[ERR] server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
[ERR] server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
这意味着某些缓存查询会导致问题。我们试图改变怪癖的顺序,但没用。只有像
SELECT 1+8
这样的简单查询才能正常运行,而这些查询可能没有被缓存。类似的问题可以使用psql和任何其他语言驱动程序(不仅仅是PHP)来模拟。
当我们安装PostgreSQL Query Cache时,所有的问题都出现了。
是否应该以某种方式配置查询缓存,而不是以这种方式运行?
我们的配置文件在这里:
http://pastebin.com/g2dBjba0–pcqd_hba.conf
http://pastebin.com/X9Y3zrjx–pcqd.conf文件
最佳答案
可能是PostgreSQL查询缓存中有一个错误,导致后端出现segfults。您最好的解决方案是卸载此加载项。
关于postgresql - PostgreSQL查询缓存-意外关闭连接,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/8593879/