How do I fix error SP2 0640 not connected?

How do I fix error SP2 0640 not connected?

SP2-0640 Not connected. Cause: The PASSWORD command was issued when there was no connection to the Oracle instance. Action: Connect to the Oracle database before re-issuing the PASSWORD command.

How do I fix ORA 12547 TNS lost contact when trying to connect to Oracle?

Solution

1. Ensure the DB is up and running and you can connect locally AS SYSDBA to the database using Oracle binaries owner (usually oracle:oinstall Unix / Linux user). If it does not work, probably you encounter a different problem.
2. Check privileges of an Oracle file on Unix / Linux host where database is running:

Why is Sqlplus not working?

Answer: This says that the OS cannot find the program named sqlplus in its PATH. First, the Oracle Shell Scripting book has full details on locating a missing executable. Start by a cd to the $ORACLE_HOME/bin and see if it works . . . If this works, you need to set your PATH to include your $ORACLE_HOME/bin directory.

How do I connect to Sqlplus?

Starting SQL*Plus Command-line

1. Open a UNIX or a Windows terminal and enter the SQL*Plus command: sqlplus.
2. When prompted, enter your Oracle Database username and password.
3. Alternatively, enter the SQL*Plus command in the form: sqlplus username/password.
4. SQL*Plus starts and connects to the default database.

How do I get to SQL command line?

Start the sqlcmd utility and connect to a default instance of SQL Server

1. On the Start menu click Run. In the Open box type cmd, and then click OK to open a Command Prompt window.
2. At the command prompt, type sqlcmd.
3. Press ENTER.
4. To end the sqlcmd session, type EXIT at the sqlcmd prompt.

How do I access Oracle database?

Connecting to Oracle Database from SQL*Plus

1. If you are on a Windows system, display a Windows command prompt.
2. At the command prompt, type sqlplus and press the key Enter. SQL*Plus starts and prompts you for your user name.
3. Type your user name and press the key Enter.
4. Type your password and press the key Enter.

How do you run relink all in Oracle?

Relinking Oracle Database Client Binaries After Installation

1. Login as the Oracle Database Client owner user ( oracle ).
2. Set the ORACLE_HOME environment variable.
3. Go to the $ORACLE_HOME/bin directory:
4. Run the relink script with the as_installed option to relink the binaries.

How do I fix ORA 12541 TNS no listener?

4 Answers

1. Step 1 – Edit listener. ora. This file is located in: Windows: %ORACLE_HOME%\network\admin\listener.
2. Step 2 – Restart Oracle services. Windows: WinKey + r services.msc. Linux (CentOs): sudo systemctl restart oracle-xe.

What is sqlplus command?

SQL*Plus commands allow a user to manipulate and submit SQL statements. Specifically, they enable a user to: Enter, edit, store, retrieve, and run SQL statements. List the column definitions for any table. Format, perform calculations on, store, and print query results in the form of reports.

Where is sqlplus installed?

The SQL*Plus executable is usually installed in $ORACLE_HOME/bin, which is usually included in your operating system PATH environment variable. You may need to change directory to the $ORACLE_HOME/bin directory to start SQL*Plus. In the following examples, you are prompted to enter the database account password.

How do I login to SQL Plus as the user?

To start SQL*Plus and connect to the database from the command line:

1. Open a command window.
2. Configure the operating system environment variables, as described in “Configuring the Operating System Environment Variables .”
3. Start SQL*Plus using a command in the following format: sqlplus {username | /} [as sysdba]

What is Sqlplus command?