What are cascading triggers? What is the maximum no of cascading triggers at a time?

ORACLE Interview Questions and Answers (Part 5)

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20.What are cascading triggers? What is the maximum no of cascading triggers at a time?

When a statement in a trigger body causes another trigger to be fired, the triggers are said to be cascading. Max = 32.

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Other Interview Questions

• Is it possible to split the print reviewer into more than one region?
• Is it possible to center an object horizontally in a repeating frame that has a variable horizontal size?
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• Can a field be used in a report without it appearing in any data group?
• The join defined by the default data link is an outer join yes or no?
• Can a formula column referred to columns in higher group?
• Can a formula column be obtained through a select statement?
• Is it possible to insert comments into sql statements return in the data model editor?
• Is it possible to disable the parameter from while running the report?
• When a form is invoked with call_form, Does oracle forms issues a save point?
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• How do you switch from an init.ora file to a spfile?
• Explain the difference between a data block, an extent and a segment.
• Give two examples of how you might determine the structure of the table DEPT.
• Where would you look for errors from the database engine?
• Compare and contrast TRUNCATE and DELETE for a table.
• Give the reasoning behind using an index.
• Give the two types of tables involved in producing a star schema and the type of data they hold.
• What type of index should you use on a fact table?
• Give two examples of referential integrity constraints.
• A table is classified as a parent table and you want to drop and re-create it. How would you do this without affecting the children tables?
• Explain the difference between ARCHIVELOG mode and NOARCHIVELOG mode and the benefits and disadvantages to each.
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• Give the stages of instance startup to a usable state where normal users may access it.
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• How would you go about generating an EXPLAIN plan?
• How would you go about increasing the buffer cache hit ratio?
• Explain an ORA-01555
• Explain the difference between $ORACLE_HOME and $ORACLE_BASE.
• How would you determine the time zone under which a database was operating?
• Explain the use of setting GLOBAL_NAMES equal to TRUE.
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• Explain the difference between a FUNCTION, PROCEDURE and PACKAGE.
• Explain the use of table functions.
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• Where in the Oracle directory tree structure are audit traces placed?
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• How would you force a log switch?
• Give two methods you could use to determine what DDL changes have been made.
• What does coalescing a tablespace do?
• What is the difference between a TEMPORARY tablespace and a PERMANENT tablespace?
• Name a tablespace automatically created when you create a database.
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• How do you add a data file to a tablespace
• How do you resize a data file?
• What view would you use to look at the size of a data file?
• What view would you use to determine free space in a tablespace?
• How would you determine who has added a row to a table?
• How can you rebuild an index?
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• You have just compiled a PL/SQL package but got errors, how would you view the errors?
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• How does one give developers access to trace files (required as input to tkprof)? (for DBA)
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• Why and when should I backup my database? (for DBA
• What strategies are available for backing-up an Oracle database? (for DBA
• What is the difference between online and offline backups? (for DBA
• What is the difference between restoring and recovering? (for DBA
• How does one backup a database using the export utility? (for DBA
• What are the built_ins used the display the LOV?
• How do you call other Oracle Products from Oracle Forms?
• What is the main diff. bet. Reports 2.0 & Reports 2.5?
• What are the Built-ins to display the user-named editor?
• How many number of columns a record group can have?
• What is a Query Record Group?
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• What is a master detail relationship?
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• What is an anchoring object and what is its use? What are the various sub events a mouse double click event involves?
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• What are the various sub events a mouse double click event involves? What are the various sub events a mouse double click event involves?
• What is the use of break group? What are the various sub events a mouse double click event involves?
• What tuning indicators can one use? (for DBA
• 813. What tools/utilities does Oracle provide to assist with performance tuning? (for DBA
• What is STATSPACK and how does one use it? (for DBA
• What are the common RMAN errors (with solutions)? (for DBA
• How can you execute the user defined triggers in forms 3.0 ?
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• What is the difference between NAME_IN and COPY ?
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• How does one manage Oracle database users? (for DBA
• 831. How does one tune Oracle Wait events? (for DBA
• What is the difference between DBFile Sequential and Scattered Reads?(for DBA
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• Are there any undocumented commands in Oracle? (for DBA
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• what is a display item?
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• Can you pass parameters in packages ? How ?
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• Is the assignment given below allowed : ABC = PQR (Where ABC and PQR are records)
• Is this for loop allowed : For x in &Start..&End Loop
• How many rows will the following SQL return : Select * from emp Where rownum
• How many rows will the following SQL return : Select * from emp Where rownum = 10;
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• Can a trigger written for a view ?
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• What is Functional Dependency
• What is Auditing ?
• While designing in client/server what are the 2 imp. things to be considered ?
• When to create indexes ?
• How can you avoid indexes ?
• What is the result of the following SQL ...
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• For which relational operators in where clause, index is not used ?
• Assume that there are multiple databases running on one machine. How can you switch from one to another ?
• What are the advantages of Oracle ?
• What is a forward declaration ? What is its use ?
• What are actual and formal parameters ?
• What are the types of Notation ?
• What all important parameters of the init.ora are supposed to be increased if you want to increase the SGA size ?
• If I have an execute privilege on a procedure in another users schema, can I execute his procedure even though I do not have privileges on the tables within the procedure ?
• What are various types of joins ?
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• What is implicit cursor and how is it used by Oracle ?
• Which of the following is not a schema object : Indexes, tables, public synonyms, triggers and packages ?
• What is PL/SQL?
• Is there a PL/SQL Engine in SQL*Plus?
• Is there a limit on the size of a PL/SQL block?
• Can one read/write files from PL/SQL?
• How can I protect my PL/SQL source code?
• ORACLE Interview Questions and Answers (Part 5)
• Oracel Interview Question Only (1)
• Oracel Interview Question Only (2)