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Database designing is a process, which follows the requirement ANALYSIS phase to determine the required database STRUCTURE to SATISFY APPLICATION, product, or business requirements as per the given criteria.

Database designing is a process, which follows the requirement analysis phase to determine the required database structure to satisfy application, product, or business requirements as per the given criteria.

Oracle USED to follow a balanced BINARY tree sorting algorithm to effectively BUILD an n-memory index on the incoming data. Binary tree search places a huge memory and CPU overhead on the system for large searches; therefore, Oracle introduced an algorithm based on heap sort, which is more efficient. HOWEVER, it also has a limitation of re-ordering incoming rows even when the data is not arriving out of order.

Oracle used to follow a balanced binary tree sorting algorithm to effectively build an n-memory index on the incoming data. Binary tree search places a huge memory and CPU overhead on the system for large searches; therefore, Oracle introduced an algorithm based on heap sort, which is more efficient. However, it also has a limitation of re-ordering incoming rows even when the data is not arriving out of order.

Some examples of join methods are given as follows:

•  Merge join —Sorts both the joining tables by using the join key and then merges the sorted rows.
•  Nested loop join —-Applies filter conditions specific to the outer table and gets a result set. After that, it joins the inner table with the result set using either an index or a full table scan.
•  HASH join —Uses hash ALGORITHM for filter conditions on smaller table FIRST and then performs the same hashing algorithm on the other table for joined columns. After that, it RETURNS the MATCHING rows.

Some examples of join methods are given as follows:

Oracle or any other DBMS is a program that HANDLES user requests (data retrieval, storage, or MODIFICATION requests) without any requirement to SPECIFY the ALGORITHM to do so.

Oracle or any other DBMS is a program that handles user requests (data retrieval, storage, or modification requests) without any requirement to specify the algorithm to do so.

DBMS is a PROGRAM that defines the RULES for data storage and retrieval. RDBMS is a special type of DBMS that stores the data in the RELATIONAL FORMAT as described in the relational theory by E.F. Codd.

DBMS is a program that defines the rules for data storage and retrieval. RDBMS is a special type of DBMS that stores the data in the relational format as described in the relational theory by E.F. Codd.

Oracle is a type of RELATIONAL Database Management System (RDBMS). ANOTHER AVAILABLE storage system is Hierarchical Storage Management system, such as Information Management System (IMS) from IBM and INTEGRATED Database Management System (IDMS) from Computer Associates.

Oracle is a type of Relational Database Management System (RDBMS). Another available storage system is Hierarchical Storage Management system, such as Information Management System (IMS) from IBM and Integrated Database Management System (IDMS) from Computer Associates.

Process of having a copy of redo log files is called mirroring. This can be ACHIEVED by creating group of log files together, so that LGWR will automatically writes them to all the members of the current on-line redo log group. If any ONE group fails then DATABASE automatically switch over to NEXT group. It DEGRADES performance.

Process of having a copy of redo log files is called mirroring. This can be achieved by creating group of log files together, so that LGWR will automatically writes them to all the members of the current on-line redo log group. If any one group fails then database automatically switch over to next group. It degrades performance.

Only ONE LONG column is allowed. It is not POSSIBLE to use LONG column in WHERE or ORDER BY CLAUSE.

Only one LONG column is allowed. It is not possible to use LONG column in WHERE or ORDER BY clause.

• To modify the DATATYPE of a column the column must be EMPTY.
• To ADD a column with NOT NULL constrain, the table must be empty.

Customization WORD used for Master Data maintenance. And CONFIGURATION word used for PRICING Procedure Determination.

Customization word used for Master Data maintenance. And Configuration word used for pricing Procedure Determination.

Well If you are running GL Month end reports or taxation reports annually these reposrts might take couple of days. Some of these requests are very resource INTENSIVE so you can have one node running long running, resource intensive requests while other PROCESSING your day to day short running requets. Another SCENARIO is when your requests are very CRITICAL and you want high resilience for your CONCURRENT Processing Node, you can configure PCP. So if node1 goes down you still have CM node available processing your requests.

Well If you are running GL Month end reports or taxation reports annually these reposrts might take couple of days. Some of these requests are very resource intensive so you can have one node running long running, resource intensive requests while other processing your day to day short running requets. Another scenario is when your requests are very critical and you want high resilience for your Concurrent Processing Node, you can configure PCP. So if node1 goes down you still have CM node available processing your requests.

PCP is ACRONYM for PARALLEL Concurrurent processing. Usually you have one Concurrent Manager executing your requests but if you can configure Concurrent Manager running on two machines (Yes you need to do some additional steps in order to configure Parallel Concurrent Processing). So for some of your requests primary CM Node is on machine1 and secondary CM node on MACHINE2 and for some requests primary CM is on machine2 and secondary CM on machine1.

PCP is acronym for Parallel Concurrurent processing. Usually you have one Concurrent Manager executing your requests but if you can configure Concurrent Manager running on two machines (Yes you need to do some additional steps in order to configure Parallel Concurrent Processing). So for some of your requests primary CM Node is on machine1 and secondary CM node on machine2 and for some requests primary CM is on machine2 and secondary CM on machine1.

Report Review Agent(RRA) ALSO REFERRED by executable FNDFS is default TEXT viewer in Oracle Applications 11i for VIEWING output files and log files. 

Report Review Agent(RRA) also referred by executable FNDFS is default text viewer in Oracle Applications 11i for viewing output files and log files. 

This VALUE is DETERMINED from profile option "Applications DATABASE ID".

This value is determined from profile option "Applications Database ID".

Lets first understand what is cache size in Concurrent MANAGER. When Manager picks REQUEST from FND CONCURRENT REQUESTS Queues, it will pick up number of requests defined by cache size in one SHOT and will work on them before going to sleep. If you don't define cache size while defining CM then it will take default value 1, i.e. picking up one request per cycle.

Lets first understand what is cache size in Concurrent Manager. When Manager picks request from FND CONCURRENT REQUESTS Queues, it will pick up number of requests defined by cache size in one shot and will work on them before going to sleep. If you don't define cache size while defining CM then it will take default value 1, i.e. picking up one request per cycle.

ICM stand for Internal Concurrent Manager, which controls other managers. If it finds other managers down , it checks and try to RESTART them. You can say it as administrator to other concurrent managers. It has other tasks as well.

Standard Manager :These are normal managers which control/action on the requests and does batch or single request processing.

CRM acronym for Conflict Resolution Manager is USED to resolve conflicts between managers and request. If a request is SUBMITTED whose execution is clashing or it is defined not to run while a particular type of request is RUNNING then such requests are actioned/assigned to CRM for Incompatibilities and Conflict resolution.

ICM stand for Internal Concurrent Manager, which controls other managers. If it finds other managers down , it checks and try to restart them. You can say it as administrator to other concurrent managers. It has other tasks as well.

Standard Manager :These are normal managers which control/action on the requests and does batch or single request processing.

CRM acronym for Conflict Resolution Manager is used to resolve conflicts between managers and request. If a request is submitted whose execution is clashing or it is defined not to run while a particular type of request is running then such requests are actioned/assigned to CRM for Incompatibilities and Conflict resolution.

INSTR function search string for sub-string and RETURNS an integer indicating the position of the character in string that is the FIRST character of this occurrence. SUBSTR function return a PORTION of string, BEGINNING at character position, substring_length characters long. SUBSTR calculates lengths using characters as defined by the input character set.

INSTR function search string for sub-string and returns an integer indicating the position of the character in string that is the first character of this occurrence. SUBSTR function return a portion of string, beginning at character position, substring_length characters long. SUBSTR calculates lengths using characters as defined by the input character set.

RAW, LONG Raw, and BLOB.

Raw, Long Raw, and BLOB.

SQL is the query language to manipulate the data from the database. SQL*PLUS is the TOOL that lets to use SQL to FETCH and DISPLAY the data.

SQL is the query language to manipulate the data from the database. SQL*PLUS is the tool that lets to use SQL to fetch and display the data.

An UNIQUE KEY can have NULL WHEREAS PRIMARY key is always not NOT NULL. Both bears unique values.

An UNIQUE key can have NULL whereas PRIMARY key is always not NOT NULL. Both bears unique values.

=, IN, NOT IN, IN ANY, IN ALL, EXISTS, NOT EXISTS.

=, IN, NOT IN, IN ANY, IN ALL, EXISTS, NOT EXISTS.

APPS Listener usually running on All Oracle Applications 11I NODES with listener alias as APPS_$SID is mainly used for listening requests for SERVICES like FNDFS and FNDSM.

Apps Listener usually running on All Oracle Applications 11i Nodes with listener alias as APPS_$SID is mainly used for listening requests for services like FNDFS and FNDSM.

In Oracle 11i, you have script adalnctl.sh which will start your apps listener. You can also start it by COMMAND lsnrctl start APPS_$SID (REPLACE sid by your INSTANCE SID NAME)

In Oracle 11i, you have script adalnctl.sh which will start your apps listener. You can also start it by command lsnrctl start APPS_$SID (Replace sid by your Instance SID Name)

Web LISTENER is Web Server listener which is listening for web SERVICES(HTTP) request. This listener is started by adapcctl.sh and defined by directive (Listen, Port) in httpd.conf for Web Server. When you initially TYPE request like http://becomeappsdba.blogspot.com:80 to access application here port number 80 is Web Listener port.

Web Listener is Web Server listener which is listening for web Services(HTTP) request. This listener is started by adapcctl.sh and defined by directive (Listen, Port) in httpd.conf for Web Server. When you initially type request like http://becomeappsdba.blogspot.com:80 to access application here port number 80 is Web Listener port.

USING QUERY SQLPLUS

using query SQLPLUS

You can use admin utility to compile or you can use utlrp.sql SCRIPT shipped with ORACLE Database to compile INVALID Database OBJECTS.

You can use admin utility to compile or you can use utlrp.sql script shipped with Oracle Database to compile Invalid Database Objects.

You can USE ojspCompile.pl PERL SCRIPT SHIPPED with Oracle APPS to compile JSP files. This script is under $JTF_TOP/admin/scripts. Sample compilation method is perl ojspCompile.pl --compile --quiet.

You can use ojspCompile.pl perl script shipped with Oracle apps to compile JSP files. This script is under $JTF_TOP/admin/scripts. Sample compilation method is perl ojspCompile.pl --compile --quiet.

ADPATCH is utility to apply ORACLE apps Patches WHEREAS OPATCH is utility to apply database patches

ADPATCH is utility to apply oracle apps Patches whereas OPATCH is utility to apply database patches

Yes you have to USE both in apps, for apps patches you will use ADPATCH UTILITY and for applying DATABASE PATCH in apps you will use opatch UTILITY.

Yes you have to use both in apps, for apps patches you will use ADPATCH UTILITY and for applying database patch in apps you will use opatch UTILITY.

ORACLE HTML Cache is available at $COMMON_TOP/_pages. For some PREVIOUS VERSIONS you MIGHT FIND it in $OA_HTML/_pages.

Oracle HTML Cache is available at $COMMON_TOP/_pages. For some previous versions you might find it in $OA_HTML/_pages.

There are three $ORACLE_HOME in Oracle APPS, Two for APPLICATION Tier (Middle Tier) and One in Database Tier.

• ORACLE_HOME 1 : On Application Tier used to store 8.0.6 techstack software. This is used by forms, reports and discoverer. ORACLE_HOME should point to this ORACLE_HOME which APPLYING Apps Patch.
• ORACLE_HOME 2: On Application Tier used by IAS (Web Server) techstack software. This is used by Web Listener and contains Apache.
• ORACLE_HOME 3: On Database Tier used by Database Software usually 8i,9i or 10g database.

There are three $ORACLE_HOME in Oracle Apps, Two for Application Tier (Middle Tier) and One in Database Tier.

In ORDER to START dicoverer you can USE SCRIPT addisctl.sh under
$OAD_TOP/admin/scripts/$CONTEXT_NAME or startall.sh under
$ORACLE_HOME/discwb4/util (under Middle/Application TIER).

In order to start dicoverer you can use script addisctl.sh under
$OAD_TOP/admin/scripts/$CONTEXT_NAME or startall.sh under
$ORACLE_HOME/discwb4/util (under Middle/Application Tier).

You can START FORMS SERVER in SOCKET or SERVLET by defualt Forms are CONFIGURED to start in socket MODE.

You can start forms server in SOCKET or SERVLET by defualt Forms are configured to start in socket mode.

f60srvm.

f60srvm.

Forms CONFIGURATION at TIME of startup is in SCRIPT adfrmctl.sh and appsweb_$CONTEXT_NAME.cfg (defined by environment VARIABLE FORMS60_WEB_CONFIG_FILE) for forms client connection used each time a user INITIATES forms connection.

Forms configuration at time of startup is in script adfrmctl.sh and appsweb_$CONTEXT_NAME.cfg (defined by environment variable FORMS60_WEB_CONFIG_FILE) for forms client connection used each time a user initiates forms connection.

SELECT column_name FROM table_name WHERE column_name LIKE ‘%%%’ ESCAPE ‘’;.

SELECT column_name FROM table_name WHERE column_name LIKE ‘%%%’ ESCAPE ‘’;.

The WHERE condition lets you restrict the ROWS selected to those that SATISFY ONE or more conditions. USE the HAVING clause to restrict the groups of RETURNED rows to those groups for which the specified condition is TRUE.

The WHERE condition lets you restrict the rows selected to those that satisfy one or more conditions. Use the HAVING clause to restrict the groups of returned rows to those groups for which the specified condition is TRUE.

Yes, database and db listener should be Up when you apply any driver patch in APPS. even if driver is not updating any database object connection is required to VALIDATE appsand other SCHEMA and to upload patch history INFORMATION in database tables.

Yes, database and db listener should be Up when you apply any driver patch in apps. even if driver is not updating any database object connection is required to validate appsand other schema and to upload patch history information in database tables.

For PRODUCTS like Payable, Recievables which uses MRC and if MRC is ENABLED then each TRANSACTION table in base schema RELATED to currency now has an assoicated MRC Subtables.

For products like Payable, Recievables which uses MRC and if MRC is enabled then each transaction table in base schema related to currency now has an assoicated MRC Subtables.

GWYUID is DEFINED in dbc i.e. Database CONNECT DESCRIPTOR FILE . It is used to connect to database by think clients.

GWYUID is defined in dbc i.e. Database Connect Descriptor file . It is used to connect to database by think clients.

GWYUID, stands for Gateway USER ID and password. USUALLY like APPLSYSPUB/PUB.

GWYUID, stands for Gateway User ID and password. Usually like APPLSYSPUB/PUB.

TWO_TASK MOCKS your tns ALIAS which you are going to use to connect to database. Lets assume you have database client with tns alias defined as PROD to connect to Database PROD on machine teachmeoracle.com listening on port 1521. Then USUAL way to connect is sqlplus username/passwd@PROD ; now if you don't want to use @PROD then you SET TWO_TASK=PROD and then can simply use sqlplus username/passwd then sql will check that it has to connect to tnsalias DEFINE by value PROD i.e. TWO_TASK.

TWO_TASK mocks your tns alias which you are going to use to connect to database. Lets assume you have database client with tns alias defined as PROD to connect to Database PROD on machine teachmeoracle.com listening on port 1521. Then usual way to connect is sqlplus username/passwd@PROD ; now if you don't want to use @PROD then you set TWO_TASK=PROD and then can simply use sqlplus username/passwd then sql will check that it has to connect to tnsalias define by value PROD i.e. TWO_TASK.

If forgot password link is ENABLED and SYSADMIN account is configured with mail id USER forget password link ELSE you can reset SYSADMIN password via FNDCPASS.

If forgot password link is enabled and SYSADMIN account is configured with mail id user forget password link else you can reset SYSADMIN password via FNDCPASS.

Rapid clone updates PROFILE options specific to SITE level. If you have any profile OPTION set at other LEVELS like server, RESPONSIBILITY, user....level then reset them.

Rapid clone updates profile options specific to site level. If you have any profile option set at other levels like server, responsibility, user....level then reset them.

DBC file is quite important as WHENEVER Java or any other program like FORMS want to connect to DATABASE it USES DBC file. TYPICAL entry in DBC file is
GUEST_USER_PWD 
APPS_JDBC_URL 
DB_HOST.

DBC file is quite important as whenever Java or any other program like forms want to connect to database it uses DBC file. Typical entry in DBC file is
GUEST_USER_PWD 
APPS_JDBC_URL 
DB_HOST.

DBC as NAME stands for is database connect DESCRIPTOR file USED to connect to database. This file by DEFAULT located in $FND_TOP/secure directory also called as $FND_SECURE directory

DBC as name stands for is database connect descriptor file used to connect to database. This file by default located in $FND_TOP/secure directory also called as $FND_SECURE directory

PLSQL and SESSION CACHE are STORED under $IAS_ORACLE_HOME/ Apache/modplsql/cache DIRECTORY.

PLSQL and session cache are stored under $IAS_ORACLE_HOME/ Apache/modplsql/cache directory.

In order to improve performance mod_pls (Apache COMPONENT) caches some database content to file. This database/plssql cache is usually of TYPE session and plsql cache session cache is used to STORE session INFORMATION.

plsql cache is used to store plsql cache i.e. used by mod_pls

In order to improve performance mod_pls (Apache component) caches some database content to file. This database/plssql cache is usually of type session and plsql cache session cache is used to store session information.

plsql cache is used to store plsql cache i.e. used by mod_pls

Jserv CONFIGURATION FILES are LOCATED in $IAS_ORACLE_HOME /Apache/Jserv/etc .

Jserv configuration files are located in $IAS_ORACLE_HOME /Apache/Jserv/etc .

From 11.5.8 to 11.5.10 WEBSERVER version is iAS 1.0.2.2.2, In order to FIND version under $IAS_ORACLE_HOME/Apache/Apache/bin EXECUTE ./httpd -version .
./httpd -version
Server version: ORACLE HTTP Server Powered by Apache/1.3.19 
Server built: DEC 6 2005 14:59:13 (iAS 1.0.2.2.2 rollup 5).

From 11.5.8 to 11.5.10 Webserver version is iAS 1.0.2.2.2, In order to find version under $IAS_ORACLE_HOME/Apache/Apache/bin execute ./httpd -version .
./httpd -version
Server version: Oracle HTTP Server Powered by Apache/1.3.19 
Server built: Dec 6 2005 14:59:13 (iAS 1.0.2.2.2 rollup 5).