Two families of motor proteins, called the kinesins and dyneins, that move along the microtubules, act like tow-trucks, attaching to the cargo and pulling it along the tracks to its destination. There are many kinds of kinesins and dyneins, each of which is believed to transport a different cargo.
The TNSPING utility can be used to test an Oracle Service Name. To use it: 1.Open a Command Prompt (click Start, click Run, type cmd, and then click OK). 2.Type (for Oracle 7.3 or Oracle 8i and later) or (for Oracle 8.0), and then press enter. The TNS Ping Utility will result in an OK or a Connect failed message.n Oracle DBA may need to provide the correct connection information. The Oracle ODBC Test utility may be used to test an ODBC data source. To use it: 1  An Oracle Service Name (known as an Alias in versions prior to Oracle 8.0) defines the location (server name and port) and database (instance) for the connection.
You can also use the @ (at sign) command to run a script : The @ and @@ commands list and run the commands in the specified script in the same manner as START. SET ECHO affects the @ and @@ commands in the same way as it affects the START command. To see the commands as SQL*Plus enters them, you can SET ECHO ON.The ECHO system variable controls the listing of the commands in scripts run with the START, @ and @@ commands. Setting the ECHO variable OFF suppresses the listing. START, @ and @@ leave the last SQL command or PL/SQL block of the script in the buffer.xiting from a Script with a Return Code. You can include an EXIT command in a script to return a value when the script finishes. See the EXIT command for more information. You can include a WHENEVER SQLERROR command in a script to automatically exit SQL*Plus with a return code should your script generate a SQL error.