'enq: TX - row lock contention' on $R table even after enabling the SMALL_R_ROW storage option on upgraded 12c database

(Doc ID 2294137.1)

Last updated on SEPTEMBER 21, 2017

Applies to:

Oracle Text - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

On an upgraded 12c db, recreating a Text index and enabling the SMALL_R_ROW storage option is not effective in avoiding 'enq: TX - row lock contention' on the index's $R table.

The output from CTX_REPORT.DESCRIBE_INDEX confirms the SMALL_R_ROW is enabled correctly:

Cause

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