net err connection refused

The following exception occurs when connecting to the database using JDBC: Java. SQL. sqlexception: Io exception: Connection refused (description = (TMP =) (vsnnum = 169869568) (ERR = 12505) (error_stack = (error = (code = 12505) (emfi = 4) at oracle. JDBC. dbaccess. dberror. throwsqlexception (dberror. java: 134) at oracle. JDBC. dbaccess. dberror. throwsqlexcep

Create poolableconnectionfactory (Io Exception:connection refused (description= (tmp=) (vsnnum=169870592) (err=12505) (error_stack= (ERROR= (CODE=12505) ( emfi=4))) Org.apache.tomcat.dbcp.dbcp.BasicDataSource.createPoolableConnectionFactory (Basicdatasource.java : 1549) Org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource (basicdatasource.java:1388) Org.apache.tomcat.dbcp.dbcp.BasicDataSource.getCo

$ pip Install redis >>> import redis >>> conn = Redis. Redis () >>> conn.keys (' * ') traceback (most recent call last): File "/home/henry/.local/lib/python3.5/site-pack ages/redis/connection.py ", line 484, in Connect sock = Self._connect () File"/home/henry/.local/lib/python3.5/site-p ackages/redis/connection.py ", line 541, in _connect raise Err File"/home/henry/.local/lib/python3.5/site-packages/r edis/connection.py ", line 529, in _connect sock.c

Now many sites often can not open, appear "error Net::err_connection_reset: Connection has been reset" and so on these issues, then these questions exactly what is the problem? The normal answer is: err_connection_ RESET explanation is: err-error connection-connection-reset-

Microsoft SQL Server ADOMD. NET supports multidimensional data access in managed applications. ADOMD. NET communicates with the server using the XMLA (XML for Analysis) protocol.To access a server using Adomd.net, you must meet the requirements:System Requirements:CpuIntel (Pentium) MHz or higher, Pentium PRO, Pentium II, or Pentium III) or compatible processorMemoryMinimum 64M memory, recommended 128M memo

protected void testconnection () 2 { 3 string connstring = configurationmanager. connectionstrings ["mydemo"]. connectionstring; 4 sqlconnection con = new sqlconnection (connstring ); 5 con. statisticsenabled = true; 6 7 try 8 { 9 con. open (); 10 This. lblinfo. Text = "11 This. lblinfo. Text + = "12} 13 catch (exception ERR) 14 { 15 this. lblinfo. Text = "error reading the database." + err. message; 16} 1

Web.configThe using System.Configuration is then added to the namespace; private string connectionString = configurationsettings.appsettings["connectionString"]. ToString (); private string connectionString = configurationmanager.appsettings["connectionString"]. ToString (); protected void Page_Load (object sender, EventArgs e) {if (!this. IsPostBack) {filllist (); }} private void Filllist () {String selectsql = "SELECT * from Stu"; SqlConnection con = new SqlConnectio

1. Create a new ASP. NET site template; Double-click the Web. config file to add a Sever is the name of the server; database is the name; user ID is the login username; password is the login password.After adding the whole code is as follows:2. Double-click the Default.aspx file to drag a Label control from the Toolbox into Design view.Double-click Default.aspx.cs under Solution Explorer to write the following code:Using system;using system.collection