test db connection oracle

How to check if a database link is valid in Oracle? - Stack Overflow.

Run SQL Command Line: Starts the SQL Command Line utility for Oracle Database XE. To connect to the database, issue the connect command in the following.
[oracle@db ~]$ tnsping TEST TNS Ping. ORA-02019: connection description for remote database not found.. same error from TEST db also.
In order to connect to an Oracle database, you need to install the Oracle Client. that your DBA has configured Oracle to use a different port; check with him/her.
This chapter explains how to add and remove databases from Oracle Test. When you add a new connection for an Oracle Load Testing database or a new.
Troubleshooting Oracle Net Services - Docs Oracle.
Ask Tom "database links " - Ask Tom - Oracle.
Run SQL Command Line: Starts the SQL Command Line utility for Oracle Database XE. To connect to the database, issue the connect command in the following.
[oracle@db ~]$ tnsping TEST TNS Ping. ORA-02019: connection description for remote database not found.. same error from TEST db also.

Connect to Oracle DB via JDBC driver - Mkyong.com.
. question is How to check if the database link is valid without getting in Connection timeout problems,Is there a SQL statement to let the oracle.
How to connect SQLPlus without tnsnames.ora - Ask Tom - Oracle.

Getting Started With Oracle SQL Developer - Server Technologies.

Connecting to an Oracle Database - Docs Oracle.
Oracle Database includes utilities, and log and trace files for testing and diagnosing network connection and problems. The TNSPING and TRCROUTE utilities.