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Problem description: Client Connection database error, ORA-12516: TNS: ListenerProgramUnable to find the available handle matching the protocol stack
Solution Process:1. Check the current session count, processes, and sessions values, and find that the number of sessions and the values of the two parameters are very close.SQL * Plus: Release 10.2.0.1.0-produ
There is always an error when I put a website written by ASP in my own win7.
Or other errors | database connection error. Check the database parameter settings in the conn. asp file.
Someone said they wanted to modify the Windows/temp permission. It was invalid and there w
In Windows, debugging a PHP program, reported this error, could not find driverOriginally I used the PDO object in this program, connected to MySQL 5. In PHP's default settings, only the Php_pdo module is turned on, and the Php_pdo_mysql module is not opened. This is why you cannot find the driver error.Open this module and restart Apache. Of course, if you use a different database, open the corresponding m
Tags: style blog http color io os SP data divU3D Connect SQL Server first System.Data.dll the Unity installation directory into the Asset/plugins directory of the project, and then write a script to connect to the database, in the above two steps without error, prompt this mistake, To consider whether the relevant services for SQL Server are turned on, and to enable the TCP/IP protocol in SQL Server Configu
Connection errorafter installation, I log in to the Enterprise background (HTTP://UBUNTU:1158/EM) error, with Sqlplus connection Oracle also error.One, the error encountered is as follows1,ora-12505:tns:listener does not currently know of SID given in Connect descriptor (DBD Error:ociserverattach)2,ora-28547:
Navicat Premium Connection to MySQL database no problem, error when connecting to Oracle database, prompt:ora-28547:connection to server failed,probable Oracle Net Admin ErrorThe reason is: navicate primium version of OCI and the OCI version of the local
It takes a day and a half to resolve the client connection to the Oracle database on the server side, unable to connect the problem. Ora-01034:oracle Not available (ORACLE does not exist), ora-27101:shared memory realm does not exist analysis:A few days ago you can also connect to the database, but yesterday, the local no reason to connect to the server
environment. Therefore, in my computer, the above x64 folder under the Sqljdbc_auth.dll to be placed under System32, and x86 folder Sqljdbc_auth.dll should be placed in the SysWOW64 folder. Then, create the system environment variable classpath, the Sqljdbc4.jar is located in the path added to the value of Classpath, but later proved that this step in this practice has no effect, belongs to the extra step, the follow-up practice will not be used to know. Start MyEclipse, open the db browser win
Tags: sign class index log mode hot STL ble HID1. Lsnrctl Start command not found or bash:lsnrctl:command not found. Su-oralce switch users, the middle to have-, and-the two sides of the space, in order to correctly switch to the Oracle user, or the user will appear to find, the user does not exist error; 2. Database connection
The timeout has reached. The timeout time has reached, but the connection has not been obtained from the pool. This may occur because all pool connections are in use and the maximum pool size is reached.
The possible reasons are as follows: concurrent operations,The connection is not closed after use, or because the datareader connection exclusive
Production Environment:Source database: RHEL + Oracle 11.2.0.3Target database: HP-UX + Oracle 10.2.0.4Requirements: Migrate part of the table 11.2.0.3-->10.2.0.4, if some tables within the migration scope already exist in the target library, then replace. This migration data volume Initial scenario: the lower version of the client connects to the high-version database
Php connection to the database causes an error in the apache application. if you click log on, an error occurs in the apache application.
This error occurs when you connect to the database by writing php on any page.
Repl
Tags: error except native code UI boot error ANSI workaround serverAfter running "Maven build" and "Tomcat:run", the following error is reported:com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. at sun.re
Error | Connecting to database Java.lang.ClassNotFoundException:org.gjt.mm.mysq.Driver
This is probably the most common mistake, the general solution is to check whether the database driver is installed in the JDK directory
(such as: Copy the Mysql-connector-1-3-1.jar file to the Lib folder in the JDK directory)
Classpath whether a driver directory is set
(cla
Label:Com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:No operations allowed after connection closed.Small problem, met the summed up a bit.The cause of the problem occurs:Is the code that gets the connection to the database closed with the following code:try{IF (conn! = null) {Conn.close ();}}catch (Exception e) {E.printstacktrace ();}Workaro
Druid connection oracle Database IO error: Got minus one from a read call solution, druidminus
Druid connection oracle Database IO error: Got minus one from a read call
I found several errors on the Internet, but I deleted my
ForProgramFor members, the database is a little more familiar. We deal with databases almost every day, but do you know about databases? Do you know what errors frequently occur in the database? If an error occurs, do you know how to solve it? Next I will introduce you to a common error and solutions.
When debugging
Connecting to Oracle database times Navicat ora-28547:connection to server failed, probable Oracle Net admin Error
The following error occurred while connecting to the Oracle database with Navicat
On the Internet to check the original Oci.dll version is wrong. Because Na
Linux firewall (MySQL 3306 port is not open) for security lnmp The default is to disable remote connectionsTo view the existing iptables rules, display the serial number, and enter the following command on the Linux terminal:Iptables-l-N--line-numbersfound that the fifth corresponding 3306 port is drop (reject), so we need to manually open, enter the following command to open, Linux terminal input the following command:Iptables-d INPUT 5The error code
Label:There was an error when connecting to the MySQL database with thinkphp: sqlstate[hy000] [2002] No such file or directoryThis is because PDO cannot connect to the database due to the Mysql.sock (or mysqld.sock) file path not specified in the php.ini configuration fileConfigure the following three items in the php.ini fileMysql.default_socket =/tmp/mysql.sock
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