SQLCODE returns the value of the error number for the last error encountered. The SQLERRM returns the actual error message for the last error encountered. They can be used in exception handling to report, or, store in an error log table, the error... Read More

1. Implicit cursors are used for SQL statements that are not named. 2. Developers should use implicit cursors with great care. 3. Implicit cursors are used in cursor for loops to handle data processing. 4. Implicit cursors are no longer a... Read More

Level: Low Expected answer: %ROWTYPE allows you to associate a variable with an entire table row. The %TYPE associates a variable with a single column type. Read More

1. Only one 2. All that apply 3. All referenced 4. None Read More

Use the DBMS_OUTPUT package. Another possible method is to just use the SHOW ERROR command, but this only shows errors. The DBMS_OUTPUT package can be used to show intermediate results from loops and the status of variables as the procedure is... Read More

Candidate should mention use of DECLARE statement, a function must return a value while a procedure doesn't have to. Read More

PL/SQL tables are scalar arrays that can be referenced by a binary integer. They can be used to hold values for use in later queries or calculations. In Oracle 8 they will be able to be of the %ROWTYPE designation, or RECORD. Read More

1.Index-by tables, 2.Nested tables 3.Varrays Read More

There are 12 types of triggers in PL/ SQL that consist of combinations of the BEFORE, AFTER, ROW, TABLE, INSERT, UPDATE, DELETE and ALL key words: BEFORE ALL ROW INSERT AFTER ALL ROW INSERT BEFORE INSERT AFTER INSERT etc. Read More

Multiple records at a time could be retreved in PL/ SQL using BULK COLLECT. To do that you define PL/ SQL table and load it using SELECT ... BULK COLLECT INTO <pl/ sql table> FROM .. Optionaly could be used LIMIT - to limit the number... Read More

% ROWTYPE is to be used whenever query returns a entire row of a table or view. TYPE rec RECORD is to be used whenever query returns columns of different table or views and variables. E.g. TYPE r_emp is RECORD (eno emp.empno% type,ename emp... Read More

Explicit cursors are those user defined cursors in order to retrive more than one row from a table. Select into statment helps in invoking parmeters into the formal parameters. Read More

1. DBMS_DISPLAY 2. DBMS_OUTPUT 3. DBMS_LIST 4. DBMS_DESCRIBE Read More

Use the %ISOPEN cursor status variable. Read More

The DECLARE statement is used in PL/SQL anonymous blocks such as with stand alone, non-stored PL/SQL procedures. It must come first in a PL/SQL stand alone file if it is used. Read More

1. Record type declaration. 2. Opening and parsing of SQL statements. 3. Fetches records from cursor. 4. Requires exit condition to be defined. Read More

OPEN then FETCH then LOOP followed by the exit when. If not specified in this order will result in the final return being done twice because of the way the %NOTFOUND is handled by PL/ SQL. Read More

The DECLARE statement is used in PL/ SQL anonymous blocks such as with stand alone, non-stored PL/SQL procedures. It must come first in a PL/SQL stand alone file if it is used. Read More

Oracle provides the DBMS_ series of packages. There are many which developers should be aware of such as DBMS_SQL, DBMS_PIPE, DBMS_TRANSACTION, DBMS_LOCK, DBMS_ALERT, DBMS_OUTPUT, DBMS_JOB, DBMS_UTILITY, DBMS_DDL, UTL_FILE. If they can mention a... Read More

OPEN then FETCH then LOOP followed by the exit when. If not specified in this order will result in the final return being done twice because of the way the %NOTFOUND is handled by PL/SQL. Read More

1. VARIABLE g_yearly_budget NUMBER EXECUTE g_yearly_budget := GET_BUDGET(11); 2. VARIABLE g_yearly_budget NUMBER EXECUTE :g_yearly_budget := GET_BUDGET(11); 3. VARIABLE :g_yearly_budget NUMBER EXECUTE :g_yearly_budget := GET_BUDGET(11); 4.... Read More

Oracle provides the DBMS_ series of packages. There are many which developers should be aware of such as DBMS_SQL, DBMS_PIPE, DBMS_TRANSACTION, DBMS_LOCK, DBMS_ALERT, DBMS_OUTPUT, DBMS_JOB, DBMS_UTILITY, DBMS_DDL, UTL_FILE. If they can mention a few... Read More

This happens with triggers. It occurs because the trigger is trying to update a row it is currently using. The usual fix involves either use of views or temporary tables so the database is selecting from one while updating the other. Read More