Doctrine 2: cascade persist Oracle “IDENTITY” is returning 0 as last inserted ID

Question

I am using doctrine 2 with oracle, the tables in the database has some triggers that generate the IDs, and my ID mapping of my tables is like the following:

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Answer 1

Oracle doesn't support auto incrementing, so you cannot use the "IDENTITY" strategy in Doctrine. You'll have to use the "SEQUENCE" (or "AUTO") strategy.

When specifying "AUTO", Doctrine will use "IDENTITY" for MySql and "SEQUENCE" for Oracle.

http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/basic-mapping.html#identifier-generation-strategies