A mapping parameter represents a constant value that can be defines before mapping run
A mapping parameter is represented in a parameter file which is saved with an extension .PRM (or) .TXT
Syntax:
[folder .WF: work flow.ST: session]
$$ parameter = constant value
A mapping can be reuse for various constant that passing through parameter.
Reduce the development over head
Mapping parameter are local to the mapping can be accessed with in the mapping.
Note:
Mapping parameters can also be defined in source qualifier transformation.
Create source and target definitions
Create the mapping with the name M_ mapping _parameter
Drop the source and target definitions
Create the transformation type filter
From mapping menu select parameterized variables
From tool bar click on add a new variable
| Name | Type | Data type | precession | scale |
| SS Dno | Parameter | decimal | 2 | 0 |
Click ok
From source qualifier copy the required to the filter transformation
In a filter transformation define th following condition
Dept no = $$ Dno
From filter connect the ports to the target
Open the note pad define the following syntax
[BSR. WF: W_MP.ST:S_MP]
$$ Dno =10
Save the parameter file with an extension .PRM
Create the session with the name S_MP
Double click the session select the properties tab
|
Attribute |
Value |
| Parameter filename | C:/bsr/test.PRM |
Select the mapping tab set the reader and writer connections
Click apply and click ok
Create the workflow with the name W_ SP
A mapping variable represents a value that can be changed during the mapping run
After each successful compilation of the session the integration service stores the variable with its value in the repository.
Use the following functions to define the mapping variables
Use mapping variables to perform incremental rating
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Source definition with the name EMP
Target definition emp - iner
Emp no, ename, job, sal, dept no
Create a mapping with the name M _ employee _incremental read
Drop the source and target definition
Create the transformation type filter.
From mapping menu select parameters and variables
From tool bar click on add a new variable
| Name | Type | Precision | Scale |
| $$ Dno | Variable |
Intial value 0 , click ok
From source qualifier copy required the ports to the filter transformation
Develop the following filter condition to perform the incremental reading
Dept no = SET VARIABLE ($$DNO,($$ DNO+10))
From filter transformation connect the ports to target
To view the correct vaiable value which is stored in the repository
From workflow select session right click on view percent value
Note: you set increment
Mapping variable generating sequence numbers;
Source definition EMP
Target definition EMP – sequence
EMP key, emp no, ename, sal
Create the mapping with the name M_ sequence _ variable
Drop the source and target definition
Create the transformation type expression
From source qualifier copy the required ports tp expression transformation
From mapping menu select parameters and variables
From tool bar click on add a new variable
| Name | Type | Data type | Aggregation |
| $$ sequence | variable | Integer | cont |
Initial value 0 , click ok
From expression transformation connect the ports to target
Note:
Sequential , normalize, mapping variable, dynamic look up are generating the sequential generater key
A session parameter defines the connection to a data base system
A session parameter defines in a parameter file which is saved with an extension .prm (or) .txt
[folder .session]
DB connection .src = relational connection
A session can be re use to make connection to multiple data base to perform extraction
The source are heterogeneous and homogeneous but the table must be same
Create a source and target definitions
Emp no, ename, sal, job, deptno [empno PK desable]
Create the mapping with the name M _ session _ parameter _ DB
Drop the source and target definition
From source qualifier connect ports to the target
From repository menu click on save
Create a session with the name S _ M _ session _ parameter + DB
Double click the session select the mapping tabb
From left name select SQ _EMP
From connection click on tenter to open relational connection browser
Selection use connection variable
Enter the name $ DB connection _src, click ok
From let pane select the target set the writer connection with load type normal
Click apply , click ok
Open the note pad define the following syntax
[BSR . S_M_session _parameter_DB]
$DB connection _src =scott _reader
Save the file with the extension .prm .txt
Double click the session select the properties tab
| Attribute | Value |
| Parameter file name | C:Batch 4 pmSYS.PRM |
PMCMD utility
The PMCMD is a command line program line program utility which provides communication with integration services
The PMCMDA can perform the some of the operations which can also be perform using workflow manager client
Use PMCMD to start the work flow on integration service
The PMCMDA is a command line client program (or) interface executes the following command
This is a case sentive it can write the lower case , the PMCMD connect to integration service to perform some of the operations whih can also be perform using work flow manager list
Syntax:
Connect – sv service – d domain – u user – p password
Disconnect
It disconnect the PMCMD from integration service
Syntax
Disconnect
Exit:
It disconnect the PMCMD from integration service and closes the client program PMCMD
It allow you to execute the workflow on integration service
Syntax: Start workflow - f folder workflow
Set folder
It activates the folder from which we can run the workflow.
Syntax: Set folder folder (name) (Ex: workflow batch up m [folder name])
Note: After activating the folder the workflow can be started with the following syntax.
Start work workflow
It deactivates the current folder
Syntax: Unset folder
Procedure: Access the command prompt, type PMCMD to invoke the client program.
Ex: C: PMCMD <--
PMCMD > connect - SV nipuna(integration service name) - d domain(system name)=admin - U Administrator(username) - P
Administrator
PMCMD > stat workflow - f batch 4PM W - PMCMD(workflow name) <--'
Type 2:
PMCMD > Set workflow Batch4pm <--'
> Start workflow W - PMCMD <--'
> Unset folder
It provides the following details about the Integrating service.
(1) Domain Name
(2) Name of Integration Service
(3) Version of Integration Service
(4) Operating system on which Integration service is running.
(5) Integration Service code page, operating mode.
(6) Node Name
(7) Primary node details
The PMREP is a command-line program utility which provide an access to repository service to perform repository administration
Execute the following command to perform administration
It connects to the repository service with the following syntax.
PMREP > connect - r repository (it is caused the repository service) - d domain - n user - x password (pwd)
Ex: C: Pmrep <--'
Pmrep>connect -r nipuna -rep -d domain -admin -n(user) Administrator -x(password) Administrator
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It create the new folder in the repository.
Syntax: Create folder -n(new) folder name(folder(AXAEDM))
It delete folder from repository.
Syntax: delete folder -n folder name
Ex: delete folder -n AXAEDM
It allows you to take the backup od entire repository into a ".rep" file.
Syntax: backUP -0 (output) file path
Ex: backUP -0 C: DEVINE DEV.rep
delete object: It deletes the repository objects from repository
Syntax: delteobject - 0 < object_type > - f < folder_name > - n < object_name >
Ex: Deleteobject - 0 session - f Batch4pm - n 530 <--'
Object Export
It exports the repository objects such as mappings, sessions, workflows etc into a "XML" file.
Syntax:
ObjectExport - n <object_name>
- o <object_type>
- F <folder_name>
- U <xml_output_file_name>
Ex: ObjectExport -n m10 -c mapping -f Batch4pm -U C: Batch4pmABC.xml <--'
[GUI based used export select mappingname from repository select export ]
Restore: It restore the backup file into a empty repository database
Exit: It disconnect the Pmrep from repository service and closes Pmrep client program.
Session Recovery:
When you stop ta session (or) an error causes session to start then identify the reasons for the failure of the session and start the session using one of the following methods.
(1) Restart the session if the integration services as not issued at least one commit.
(2) Perform session recovery if the integration services as issued at least one commit.
When you start the session in a recovery mode the integration services reads the row ID of last record committed from "OPP_srvr_recovery table"
The integration services reads "all the source data" but processing from next rowId.
Procedure: Double click the session , select the properties tab
Attribute Value
Recovery strategy Resume from last check point
Click apply and click Ok
The session which is configured for push-down optimization "increases the session performance"
The integration services analyze the mapping, transformation and determines which transformation logic to be sent to the source (or) target database server.
The integration services translate the transformation logic into SQL and sends it to the database server for processing.
The push-down optimization is a configured in three different ways.
(1) Source side PUSH down optimization:
The Integration service sends as much as possible transformation logic to the source database server.
(2) Tagetside PUSH down optimization:
The integartion services sends as much as transformation logic as possible to the target database server.
(3) Full PUSH down optimization:
The integration service sends the transformation logic to both source and target database servers.
Enhancement in Power center 8 version: [comparing 7 version]
The following are the new enhancements made it power center 8 in comparison with power center 8 in comparison with power center 7.
(1) Service-oriented architecture (SOA) [domain explain]
(2) PUSH down optimization
(3) User defined functions
(4) Generating workflow from the designer client. [8.6 version it is implemented]
(5) SQL transformation
(6) Java transformation
(7) MM/DD/YY H24/MM/US (ultra seconds)
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