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12c ENQ TX Row lock contention when insert parallel on table with lob

Mr.D.Sep 2 2024 — edited Sep 2 2024

Hi,
i've read that: “Starting with 12c, we allow parallel INSERTs into non-partitioned tables with LOB columns provided that those columns are declared as SecureFiles LOBs”

But it doesn't works for me.

My database is a 12.1.0.2.19 and when try to perform this insert:

insert /*+ parallel enable_parallel_dml */ into MY_BLOB select /*+ parallel */ * from MY_BLOB_OLD;

many parallel session goes to ENQ TX - Row lock contention.

The lob is in Securefile.

So what's wrong?

Thank you

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Added on Sep 2 2024
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