Session Objects in Informatica - Shikshaglobe

Content Creator: Vijay Kumar

Meeting property is a bunch of directions that train Informatica on how and when to move the information from source to target.


A meeting property is an undertaking, very much like different errands that we make in the work process supervisor. Any meeting you make should have planning related to it.


A meeting can have solitary planning at a time and once doled out, it can't be changed. To execute a meeting task, it should be added to a work process.


A meeting can be a reusable item or non-reusable. At the point when you make a meeting in task engineer, then it tends to be reused, yet when you make a meeting in work process creator, then, at that point, it is non-reusable.


A reusable meeting can be added to numerous work processes.


Properties Of Session

Utilizing the properties of the meeting you can design different qualities of the meeting like pre and post-SQL scripts, log document name and way, memory properties, and so forth.


You can likewise supersede planning properties in the meeting properties. In this part, we will examine the accompanying significant properties of the meeting.


Treat source lines as

Commit Interval

Meeting log record Property

Test Load Property

Log choices

Mistake Handling

Source/Target Properties

Associations

Stage 1) Open the meeting "s_m_emp_emp_target" in task designer, which we made in the previous instructional exercise.


Meeting Properties in Informatica: Complete Tutorial

Stage 2) Double snap on the meeting symbol inside Task Developer to open alter task window.

Stage 3) Inside the "Alter Task" window taps on the properties tab.

Stage 4) In the properties tab, it will show the properties of the meeting


Treat Source Rows As Property

This property permits you to characterize what the source information means for the objective table. For instance, you can characterize that the source record ought to be embedded or erased from the objective.

This property has four choices -

Embed

Update

Erase

Information driven

At the point when this property is set to embed, the source information will be set apart to be embedded. It implies the information may be embedded.

At the point when the property is set to refresh, the objective information will be refreshed by the source information. For refreshing of information, essential keys should be characterized in the objective table.

At the point when the property is set to erase the source information which is as of now present in the objective will be erased from the objective table. For this property to execute and apply the changes, the essential key should be characterized in the objective table.

With the property set to information-driven, Informatica checks what source records are stamped. In the event that in planning the source records are set apart as supplements, records will be embedded into the objective. In the event that records are set apart as an update in the planning, the records will be refreshed in the objective. So what activity will be performed at the objective relies heavily on how records are taken care of inside the planning.

Step-by-step instructions to Make Treat Source Rows - Delete

Stage 1 -

In the property tab of the meeting task, select the "Erase" choice in "Treat Source Rows as"

Select OK Button

Stage 2 - To characterize essential keys in the target table, open the Informatica planner

Open objective architect

Double tap on the "emp_target" table

Meeting Properties in Informatica: Complete Tutorial

This will open an "Alter Table" for our objective table.

Stage 3 - In the alter window of the target table

For the EmpNo segment, select key sort as "essential key" starting from the scroll menu and

Select the OK button.

Meeting Properties in Informatica: Complete Tutorial


Stage 4 - Save the progressions in Informatica and execute the work process for this planning.

At the point when you execute this planning, the source records which are as of now present in the objective will get erased.

Commit Interval - Property

This property characterizes the stretch after which the Informatica makes commit activity to the objective table.

For instance, on the off chance that you are embedding 20,000 records in an objective table, and you characterize commit stretch as 5,000, then after every 5,000 inclusions of records in the objective, a committed activity will be performed.

Meeting Log File Name and Session Log File registry

Design this property to alter

Default meeting log record name and

Way of the log record

The $PMSessionLogDir\ is an Informatica variable and in windows it focuses to the accompanying default area "C:\Informatica\9.6.1\server\infa_shared\SessLogs".


Empower Test Load

Utilizing this property, you can test your meeting and mappings. At the point when you utilize this element and execute the meetings, records are gotten from the sources yet they don't get stacked into the objective. So this element helps in Testing the rightness of mappings, boundary records, and working of different changes inside the planning.


On the off chance that you empower this element, there is another property - No of Rows to Test, this property ought to be designed for the no of records that you need to get from the hotspot for the test load.


Memory Properties

Memory properties give us the adaptability to tweak the memory apportioned to the Informatica for execution enhancements. At the point when there are high bottlenecks and execution is unfortunate then you can attempt to further develop the presentation utilizing the memory properties.


To design memory properties click on the "config object" tab of the alter task window. It will open another window where you can design the changes.

In this segment, you can arrange the memory properties. For instance, default support block size, consecutive cushion length, and so on. Changes to these properties will decide how much memory ought to be dispensed to Informatica administrations for their activity.


Log choices

In this property segment, you can design the log properties of the meeting. You can set the no for the number of no of logs you need to put something aside for a meeting, meeting log record max size.


Mistake Handling

Meeting Properties in Informatica: Complete Tutorial

In this part, you can arrange the blunder properties for the meeting.

You are utilizing Stop on mistakes you can design after the number of blunders the meeting that must be halted.

Utilizing abrogate following you can supersede the planning following levels.


You can likewise arrange the way of behaving in the meeting for different blunders experienced for instance putting away system mistakes, pre-post SQL blunders, and so on.


Planning and Source/Target Properties

In the planning tab of the alter task window of the meeting, you can design the properties connected with the planning and its sources/targets and changes. With this segment of properties, you can supersede the properties of the source and targets. For the sources and targets, we can abrogate the table names, we can apply table name prefixes. Inside the mappings, we can arrange the properties of different changes, sources, and focuses, notwithstanding that in this part we can likewise audit and supersede those properties. It resembles a solitary spot to survey a large number of properties.

Association Properties in Mapping

Utilizing this property, you can characterize data set associations for the source and targets.

Source Properties

In this segment, you can arrange the properties connected with the wellspring of the planning. You can arrange pre and post-SQL scripts for the source.

Utilizing the SQL question property, you can abrogate the SQL for the source. You can likewise supersede the source table name in this segment.

Meeting Properties in Informatica: Complete Tutorial

Target Properties

In this segment, you can design the subtleties of the objective. You can characterize whether the target load must be a mass burden or a typical mode.

In mass burden, the exhibition gain is accomplished as during the heap there are no re-try log supports oversaw by the data set.

Then again, the typical burden is slower when contrasted with the mass burden, however, if there should arise an occurrence of disappointment data set recuperation is conceivable.


You can likewise characterize the property to shorten the objective table prior to populating it. It implies prior to stacking any records in the objective, the objective table will be shortened, and afterward, the heap will be performed. This property is valuable when we make mappings for stage load.

We can likewise characterize the target table pre-SQL and post-SQL. Pre SQL is the piece of SQL code that will be executed prior to performing embed in the objective table, and post SQL code will be executed after the heap of the target table is finished.


Achievement or Failure Of Session Task

At the point when you have different meetings inside a work process, then, at that point, there can be a situation where at least one meeting comes up short. In such condition, there comes an issue of what might be the situation with the work process since you are having a work process in which not many undertakings have fizzled, and scarcely any errand got succeeded. To deal with such circumstances, Informatica gives a choice to set this disappointment explicit property inside the work process. To design such a way of behaving -

Stage 1 - Open the work process "wkf_run_command", which we made prior

Stage 2 - Double snap on the order task, this will open an altered task window

Select the overall tab

Select the actually look at box against property "bomb parent assuming this assignment falls flat"

Select Ok Button

Meeting Properties in Informatica: Complete Tutorial

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