Today, a netizen came to me to say with sqlplus remote connection always error, not connected, the final check found that his native tnsnames file configuration format is not the cause of the
Here are my simulated environments, as
Steps to build a physical standby database on the same machine, the Linux environment Oracle 11.2.0.1
Main Library: ORCL
Prepare library: Stby
1 Check if the listening is started
2 Configuring the initialization parameter file for the primary
Server-side configurationIf you do not want to write it yourself, you can configure it through Net Manager .The following configuration file is localhost changed to an ip address, otherwise, the remote cannot be accessed.1. Network Monitoring
The traditional way to connect to a remote database is to install an Oracle locally. Then use the Network configuration Assistant. Then connect with PL/SQL Dev. It is not very convenient because the database needs to be installed locally?The second
1. View host and database information [[email protected] ~]$ sqlplus/as sysdba sql*plus:release 12.2.0.1.0 Production on Tue May 01:19:35 2018 copyright (c) 1982, Oracle. All rights reserved. connected to:oracle Database 12c Enterprise Edition
We've talked about the construction of Oracle 11G Dataguard in the front, and the 10G build is similar. However, Oracle 10G does not support standby openEnvironment:
Role
Host Name
Ip
Database version
Operating
Oracle NET1. The client obtains the specific connection information of the server through the @ora10g name to the Tnsname.ora file.2. The client sends a link request to the server via the description in the Tnsname.ora server side3. After the server'
At present, many production databases are two node RAC, application connected database will usually connect scan IP or VIP, here do a small experiment, if we use VIP connection,How to configure our clients, load balancing is a strict rotation
PS aux | grep Ora_pmon has several database servers that have several this process (process monitoring process and external dealings)Vim Sqlnet.ora This can make the database slightly secure, so that sqlplus can not
Oracle 11G R2 RAC adds the scan IP feature, Before 11.2, the client link to the database with the VIP, if your cluster has 4 nodes, then the clients Tnsnames.ora in the corresponding has four host VIP of a connection string, if the cluster added a
Summarize:1. Three configuration files are placed in the $oracle_home\network\admin directory.2.sqlnet.ora Determining the parsing mode3.listener.ora on Sid_name, typically used for JDBC access, with a corresponding error code of 125054.tnsnames.ora
Before I talk about HBase, I'd like to say a few more words. Do the Internet application of the Buddies should be clear, the Internet application of this thing, you can not predict when your system will be how many people to visit, you face the
When a user wants to access data in another database table across a local database, the local database must have a dblink of the remote database, and the Dblink local database can access the data in the Remote database table as if it were accessing
My lab Environment:Source Production library (main Library):IP Address: 192.168.1.30Oracle 10.2.0.5 Single InstanceNew DG Library (repository):IP Address: 192.168.1.31Oracle 10.2.0.5 Single Instance
1. Source Production Library Open Archive
Requirements: Create a new standby RAC library in the same environment, that is, the same disk group as the primary RAC.Description: The production environment is generally not recommended for this configuration of DG, because the storage plane is
Original: C Language connection OracleRecently in the C language connection Oracle, DB2 database, now the C connection to Oracle's article summary:Connect to the Oracle database in C language.There are two ideas and purposesIdea one)Local
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