Given the big speed disparity and the fact that most real-world data needs to be in natural data types, I wondered if the same thing would happen if data was cast to string types in the query that SSIS issues against Oracle.
The second run was like the first, with the addition of setting the batch size larger. The third run was like the first, but on reading from Oracle all the columns were converted to text as discussed above. The last test was like the third, with the addition of setting the batch size larger. Using the string conversion and larger batches, the run was over two times faster than the obvious out-of-the-box configuration.
Add a script task 2. Attunity provides 2 high speed connectors. One for Oracle and one for Teradata. These drivers are highly optimized and very easy to use. Optimized, best-in-class performance The connectors deliver unparalleled throughput for extracting and loading data to and from Oracle and Teradata.
It is a package level property. It is used to specify how sensitive information is saved inside the package. It also specify whether to encrypt the package or the sensitive portions of the package. The ProtectionLevel property can be selected from the following list of available options click anywhere in the design area of the Control Flow tab in the SSIS designer to show the package properties :. Cached Report. Here the system will save the last executed report. It is saved in the temp DB.
It is not persisted. It has a lifetime e. Snapshot Report. It is a persisted copy of the report. It is stored for good on the report database.
You can have as many as you want. You can configure for example to save a snapshot of a report per day, so if you want to see how was your data 1 month ago, you just access the snapshot of that day. When to use which one. Most of my reports, I cache them for 2 hours, so the first user who runs it will experience a small delay and the next will get the report on demand with the data from when the report was ran, of course. Question 5 : What are check point and how they work? SSIS included a feature called checkpoints, which allows you to restart the package if it fails for any reason.
During package execution, the last successfully completed task or container is noted in a checkpoint file, and the checkpoint file is removed if the package completes successfully. But if the package fails before completing, the checkpoint file remains available as a reference to the location from which to restart the package. You need to set three package properties:. For this property, you need to provide a path and filename for the checkpoint file. This property has three possible values: Never, Always, and IfExists.
The default is Never, which prevents checkpoint creation. When you specify the Always option, the package uses the checkpoint file if it exists. A package failure is the only way a checkpoint file gets created. Once the package completes successfully, the checkpoint file is removed. The best option to use is IfExists. When you select this option, the package uses the checkpoint file if it exists. This property must be set to True. Question 6 : How check point works in for loop?
The Foreach Loop container is another atomic unit of work that can be restarted. However, the checkpoint file does not contain information about the work completed by the child containers, and the Foreach Loop container and its child containers run again when the package restarts.
There are two ways to apply style sheet in SSRS 1. Add a text box. Question 9 : Sometime we need to debug out SSIS Package but we do not want to insert records in destination but still we want to use all the transformations and dump these all records in some dummy destination. The goal can be to check the extraction performance from source OR view data at different points of Package but we do not want to insert data in destination at all.
In this kind of scenario you can use below solutions-. Multicast transformation 2. Windows 10, Windows 8, Windows 8. Warning: This site requires the use of scripts, which your browser does not currently allow. See how to enable scripts. Download Microsoft Connectors v5. Microsoft Connectors v5. Choose the download you want. Download Summary:. Total Size: 0. Back Next. Microsoft recommends you install a download manager. Microsoft Download Manager. Manage all your internet downloads with this easy-to-use manager.
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