red hat certified engineer study guide

... name recognition within their industry. Red Hat Certified Engineer Program During 1998, Red Hat developed a certification program for Red Hat Certified Engineers (RHCE) called the RHCE program. ... announced by Red Hat. You should check Red Hat s Web site, www.redhat.com , for the latest information on RHCE II. RHCE Courses and Exam A s part of its RHCE program, Red Hat offers ... Hardware- HOWTO . The Red Hat Hardware Compatibility List is on the Web at www.redhat.com/support/hardware . When choosing hardware for a Red Hat Linux system or installing Red Hat Linux on an...

Ngày tải lên: 21/12/2013, 06:17

... Red Hat Linux Red Hat Certified Engineer (RHCE) Version 3.0.0 Abstract: This study guide will help you to prepare for Linux/Unix Exam RH300, Red Hat Certified Engineer. Exam topics ... Trusted Study Resource for Technical Certifications Written by experts. The most popular study guides on the web. In Versatile PDF file format Red Hat Certified Engineer (RHCE) Red Hat ... Red Hat Linux Red Hat Certified Engineer (RHCE) Version 3.0.0 Notice: While every precaution has been taken in...

Ngày tải lên: 04/11/2013, 20:15

Ngày tải lên: 11/10/2013, 08:15

... SKILLS. OCA Oracle ® Database 11g Administrator Certifi ed Associate STUDY GUIDE Thomas FEATURED ON THE CD ISBN: 978-0-470-39512-7 Study, practice, and review for OCA certifi cation in Oracle 11g, ... watermark. Introduction xxix OCA/OCP Study Guides The Oracle Database 11g administration certification consists of three tests: two for OCA and one for OCP. Sybex offers study guides to help you achieve ... 11  g Administrator Certified Professional Study Guide (ISBN 9780470395134) covers the exam Oracle Database 11g: Administration II (1Z0-053). These two books are offered in a boxed set as...

Ngày tải lên: 15/12/2013, 05:15

... columns that show various information about the session; often the DBA is interested in finding out the username and which program is connecting to the database. If the DBA wants to find out what ... different types of functions, I’ll start with the functions that are used to handle NULL values. Functions can be nested so that the output from one function is used as input to another. ... Sort Rows? The power of an RDBMS and SQL lies in getting exactly what you want from the data- base. The sample tables you considered under the HR schema are small, so even if you get all the...

Ngày tải lên: 15/12/2013, 05:15

... resides. The value is returned in a DATE data- type. The format that the value returned is based on NLS_DATE_FORMAT , which can be altered for the session using the ALTER SESSION SET NLS_DATE_FORMAT ... will tell Oracle what format the input given in the first argument should be. The third argument may be to specify an NLS string. You can use NLS parameters to tell Oracle what character set ... enhance performance and/or reduce disk-space usage. See also BITAND . To understand the number returned from the BIN_TO_NUM function, recall from base 2 (binary) counting that the rightmost digit...

Ngày tải lên: 15/12/2013, 05:15

... Employees hired within the past five hours B. Employees hired within the past five days C. Employees hired more than five hours ago D. Employees hired more than five days ago 3. Which assertion about ... numbers with Oracle. 2. What will the following statement return? SELECT last_name, first_name, start_date FROM employees WHERE hire_date < TRUNC(SYSDATE) – 5; A. Employees hired within the past ... is NULL, the first statement will not include that customer’s PHONE_ NUMBER. B. If REGION_CODE is NULL, the second statement will not include that customer’s PHONE_ NUMBER. C. Both statements...

Ngày tải lên: 15/12/2013, 05:15

... He noticed that the SALARY column can have NULL values, and he does not want the NULLs included when calculating the average. Identify the correct SQL that will produce the desired results. A. ... are many columns that have the same names in the tables you are joining and they do not have the same datatype, or you want to specify the columns that should be consid- ered for an equijoin, ... work. C. The GROUP BY clause is not required in this query. D. The SQL will produce the highest number of jobs within a department. 7. Identify the SQL that produces the correct result. A. SELECT...

Ngày tải lên: 15/12/2013, 05:15

... commit) data that is being read by another session. Oracle always uses statement-level consistency, which ensures that the data visible to a statement does not change during the life of that statement. ... reconstruct what the record looked like at 10 a.m. Matt’s session will examine the undo segment that Sara used during her account-transfer transaction and re-create the image of what the checking-account ... FIRED_EMPLOYEES; COUNT(*) 105 INSERT INTO FIRED_EMPLOYEE VALUES (104, TRUNC(SYSDATE); SAVEPOINT A; INSERT INTO FIRED_EMPLOYEE VALUES (106, TRUNC(SYSDATE); SAVEPOINT B; INSERT INTO FIRED_EMPLOYEE VALUES (108, TRUNC(SYSDATE); ROLLBACK...

Ngày tải lên: 15/12/2013, 05:15

... altered. ALTER SESSION SET NLS_TIMESTAMP_FORMAT = ‘YYYY-MM-DD HH24:MI:SS.FF’; Session altered. ALTER SESSION SET NLS_TIMESTAMP_TZ_FORMAT = ‘YYYY-MM-DD HH24:MI:SS.FFTZH:TZM’; Session altered. SELECT ... CONTINUE clause to continue a DROP operation that was previously interrupted. The DROP UNUSED COLUMNS clause will drop all the columns that are marked as unused. You cannot selectively ... cannot undo the action. Oracle does not drop the views, materialized views, or other stored programs that refer- ence the table, but it marks them as invalid. You must specify the CASCADE CONSTRAINTS ...

Ngày tải lên: 15/12/2013, 05:15

... and/or views. The tables that the view is referencing are known as base tables. A view can be considered as a stored query or a virtual table. Only the query is stored in the Oracle data dictionary; ... synonym is dropped, all objects that reference the syn- onym will become INVALID . Private Synonyms Private synonyms can be created for objects that you own or objects that are owned by other users. ... same category. 15. B. DEFERRABLE specifies that the constraint can be deferred using the SET CONSTRAINTS command. INITIALLY IMMEDIATE specifies that the constraint’s default behavior is to vali- date...

Ngày tải lên: 15/12/2013, 05:15

... unit that gets executed when an event occurs. Stored function Stored functions are PL/SQL programs that can be used to create user-defined functions to return a value. Stored procedure Stored ... serviced by shared server processes when Oracle’s Shared Server feature is used. See Chapter 11 for details on using shared servers. Shared Server Snnn Server processes that are shared among several ... successfully written to the redo log files. Because of the important role that redo logs play in Oracle’s recovery mechanism, they are usually multiplexed. This means that each redo log contains one...

Ngày tải lên: 15/12/2013, 05:15

... buffer information to the online redo log files. A commit operation is completed only after the redo buffer is written to online redo log files. 6. D. The tasks that a DBA performs encompass all ... instance can be associated with only one database. 8. C. The shared SQL area is stored in the library cache in a shared pool and is shared between users. If a query is executed again before it is ... ASM. ASM is not covered in this book. When you’re ready to take the OCP certification exam, refer to OCP: Oracle Database 11g Administrator Certified Professional Study Guide (Sybex, 2009). Choose...

Ngày tải lên: 24/12/2013, 13:16

... 509 Database​mounted​in​Exclusive​Mode Lost​write​protection​disabled Completed:​ALTER​DATABASE​​​MOUNT Tue​Jun​17​16:32:27​2008 ALTER​DATABASE​OPEN Beginning​crash​recovery​of​1​threads ​parallel​recovery​started​with​2​processes Started​redo​scan Completed​redo​scan ​636​redo​blocks​read,​107​data​blocks​need​recovery Started​redo​application​at ​Thread​1:​logseq​46,​block​18524 Recovery​of​Online​Redo​Log:​Thread​1​Group​1​Seq​46​Reading​mem​0 ​​Mem#​0:​/u01/app/oracle/oradata/OCA11G/redo01.log Completed​redo​application Completed​crash​recovery​at ​Thread​1:​logseq​46,​block​19160,​scn​1756449 ​107​data​blocks​read,​107​data​blocks​written,​636​redo​blocks​read Thread​1​advanced​to​log​sequence​47 Thread​1​opened​at​log​sequence​47 ​​Current​log#​2​seq#​47​mem#​0:​/u01/app/oracle/oradata/OCA11G/redo02.log Successful​open​of​redo​thread​1 MTTR​advisory​is​disabled​because​FAST_START_MTTR_TARGET​is​not​set SMON:​enabling​cache​recovery Successfully​onlined​Undo​Tablespace​2. Verifying​file​header​compatibility​for​11g​tablespace​encryption ... instance should be sized and configured upon startup. The parameter file can be either a plain-text file, commonly referred to as a pfile, or a binary file that is referred to as an spfile. You can use ... should not normally be required but can be used if a normal startup does not work. What is also different about STARTUP​ FORCE is that it can be issued no matter what mode the database is in....

Ngày tải lên: 24/12/2013, 13:16

... you specify a smaller size for online redo log members. Two control files are created, and redo log files with two members are created. Each member is stored in /ora1 and /ora2 . After running ... immediate or deferred constraint checking by specifying the keyword DEFERRABLE . If you normally want a DEFERRABLE constraint to be deferred, create it with the INITIALLY DEFERRED option. Only ... are ignored. FREELIST GROUPS specifies the number of free list groups that should be created for the table. The default and minimum value is 1. Each free list group uses one data block (that’s...

Ngày tải lên: 24/12/2013, 13:16

Ngày tải lên: 24/12/2013, 13:16

Ngày tải lên: 24/12/2013, 13:16

Ngày tải lên: 24/12/2013, 13:16

Ngày tải lên: 24/12/2013, 13:16