我注意到$STH->fetch(PDO::FETCH_ASSOC)的返回值是:
SQLSTATE[HY000] [1203] User *USERNAMEHERE* already has more than 'max_user_connections' active connections
我的所有查询都是成功的,一切似乎都运行得很好。
我认为我通过将其赋值为NULL来关闭连接是正确的。这就是我的函数,你知道为什么我要大干一场吗?
function mysql_read_single_row($sql, $array_of_values) {
try {
[用户在上发布的问题]
在连接到yugabyte云DB时,我得到了以下错误:
Error: "Remaining connection slots are reserved for non-replication superuser connections"
org.postgresql.util.PSQLException: FATAL: remaining connection slots are reserved for non-replication superuser connections
at org.postgresql.core.v3.QueryExe
我怎样才能在这里关闭mysqli_connection?为什么关闭连接很重要?
include("mysql.inc.php");
$ID = $_GET["ID"];
$q=mysqli_query($link,"select * from messages Where ID = '$ID' ORDER BY createID ASC LIMIT 1");
while($e=mysqli_fetch_assoc($q))
$output[]=$e;
print(json_encode($output));
我在我的应用程序中使用Hbase-Hadoop组合,并使用Data Nucleus作为ORM。
当我试图同时通过多个线程访问hbase时。它抛出异常的原因如下:
Exception in thread "Thread-26" javax.jdo.JDODataStoreException
org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able to connect to ZooKeeper but the connection closes immediately. This could be a
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
The last packet successfully received from the server was 976,464 milliseconds ago. The last packet sent successfully to the server was 974,674 milliseconds ago.
当我运行以下将向AWS RDS发送15MB文件的测试计划时,JMeter中出现了此错误。
LoadTestPl