Running in 64-bit modeįirst, try to execute the package in 64-bit mode. Now, let us start troubleshooting the SSIS package. Run the package if the data is loaded faster, then loading data from Oracle is not decreasing the performance. The last thing to try is to remove the ODBC destination and add any dummy task. To be honest, I am not sure if this component can make the data load faster since I didn't test it before Removing the destination and adding a dummy task Use the Oracle connection manager rather than OLE DB connection manager. Microsoft previously mentioned that it should provide faster performance than traditional OLE DB providers.
Instead of using OLE DB source to connect to Oracle, try using the Microsoft Connector for Oracle (Previously known as Attunity connectors).
Is the WHERE-JOIN-ORDER-(SELECT) rule for index column order wrong?. Use WHERE, JOIN, ORDER BY, SELECT Column Order When Creating Indexes. If your SQL Command contains any filtering, ordering, or Joins, you should create the indexes needed by those operations. At least it would be best if you had a primary key created on that table. The Data Source Make sure that the table is not a heapĪfter checking the available resources, you should ensure that your data source is not a heap. You can simply use the Task Manager to identify the amount of available memory. Make sure that your machine is not running out of memory. Make sure that the following hardware issues are not occurring in any of the servers: How Does SSIS Manage Connection Traffic?. Besides, make sure that your network connection bandwidth is not decreasing the data transfer performance. Available resourcesįirst, you should ensure that you have sufficient resources to load the data from the source server into the destination server.Įnsure that the available memory on the source, ETL, and destination servers can handle the amount of data you are trying to load. No worries! The same rules are applied in all database management systems. Some provided links are related to SQL Server. You should start troubleshooting your package systematically to find the performance bottleneck. I will try to give some tips to help you improve your package performance. Noting that the source(SQL command) and target table don't have any indexes.Ĭould you please suggest any methods to improve the load performance? In SSIS, when I tried to preview the result of the Source SQL command it returned: The system cannot find message text for message number 0x80040e51 in the message file for OraOLEDB. But when I tried to export it threw limit exceeded error. The source query is giving results quickly while executing in SQL developer. The load seems to take many hours to reach even a million count. I created an SSIS package that only contains a straightforward Data Flow Task. The ODBC destination component is configured to load data in batch mode (not row-by-row insertion). To lead data into Postgres, I am using an ODBC connection. 
In total there are 44 columns, mostly varchar, 11 numeric, and 3 timestamps. The OLE DB Source is configured to read data using an SQL Command. To read data from the Oracle database, I am using an OLE DB connection using "Oracle Provider for OLE DB". Oracle, Postgres, and SSIS are on separate servers.
I'm trying to load a table from Oracle to Postgres using SSIS, with ~200 million records.
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