Database Hang Due to Grant on SYS-owned Table (User$)
(Doc ID 2254339.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Information in this document applies to any platform.
- DB Hang is observed due to a deadlock between sessions executing GRANT statements on SYS-owned tables.
- Many DDL statements (CREATE ROLE, GRANT, CREATE USER) are executed against the same object from many sessions at the same time.
- This leads to huge/long waits for "row cache lock" & "library cache lock" leading to DB hang situation.
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