Updating oracle sequence

While the reasons for this design decision can only be guessed at, the good news is that even for users on older Oracle systems, there is a possible workaround to circumnavigate this pitfall and create your own auto incremented primary key column.The first step is to create a in your database, which is a data object that multiple users can access to automatically generate incremented values.Investigating the original report problem required an AWR analysis and a SQL trace (actually a 10046 level 12 trace – tracing the bind variables was of critical importance in troubleshooting the initial problem with the report).SELECTing a sequence value using the NEXTVAL function is supposed to be a fairly lightweight process.NET’s auto-increment functionality to generate "placeholder" primary key values. NET generated for the new row is just a "placeholder".That means the database might generate different values from the ones ADO. Before submitting the pending inserts to the database, the example displays the contents of the rows.

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For more information about creating auto-increment columns by using SQL Server and ADO.For more information on the upcoming change, we invite you to read our blog post.Much to the frustration of database administrators worldwide, prior to Oracle version 12c in mid-2014, Oracle simply had no inherent ability to inherently generate auto incrementing columns within a table schema.You wouldn’t expect a sequence select to be a significant problem but recently we saw that it was—and in two different ways.The issue came to light when investigating a report performance issue on an Oracle non-RAC database.

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