What login problems you may encounter while logging into SQL*Plus?
There are a couple of common login problems. If you enter an incorrect
username or password, you will receive the following error message from Oracle
server:
ORA-01017: invalid username/password; logon denied
User should consult DBA (students should consult their instructor or
academic computing personnel) to resolve username/password problems.
If there is a connectivity issue between your client PC and Oracle or the host string has an invalid entry, you will see the following error message:
ORA-12154: TNS: could not resolve service name
Oracle stores host string/service values in a file called TNSNAMES.ORA. If
you receive a TNS error, call your DBA!
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Answer the following statements true (T) or false (F)
1) A panel is displayed as a separate window, but a frame can only be displayed as part of another container. 2) Layout managers determine how components are visually presented. 3) Check boxes operate as a group, providing a set of mutually exclusive options. 4) A dialog box allows the user to select one of several options from a "drop down" menu. 5) The grid layout organizes components into a grid of rows and columns, and also allows components to span more than one cell.
The read system call, used on a terminal in non-blocking mode
A. returns 0 if no characters are available B. returns -1 if no characters are available
Which field property creates a more readable label that displays in the top row in Datasheet view and in forms and reports?
What will be an ideal response?
When a sequence of facts or steps is described, technical writers try to avoid which of these?
A. Bulleted list B. Numbered list C. Narrative passage D. All of these