ERROR: WAITED TOO LONG FOR A ROW CACHE ENQUEUE LOCK! pid=30

From: Glenn Travis <Glenn.Travis_at_wcom.com>
Date: Mon, 12 Feb 2001 08:37:17 -0800
Message-ID: <F001.002B1BB3.20010212081621@fatcity.com>

The system was not too busy. Processes running were materialized view refreshes (stored procs doing rollups, joins, etc...). The system was then locked up. Some queries could be run, others couldn't. Refreshes never completed. I had to alter system kill to release the hang.

Here are the errors:

>From the alert file;

    WAITED TOO LONG FOR A ROW CACHE ENQUEUE LOCK! pid=30

>From the udump dir;

*** SESSION ID:(37.4) 2001-02-11 22:55:18.638
>>> WAITED TOO LONG FOR A ROW CACHE ENQUEUE LOCK! <<<
row cache enqueue: session: 8c184270, mode: N, request: X row cache parent object: address=8ac94c10 type=8(dc_objects) transaction=8c4b78e4 mode=X flags=002a
status=VALID/UPDATE/-/-/-/-/-/-
data=
...
waiting for 'library cache lock' blocking sess=0x0 seq=8105 wait_time=0

            handle address=8b27869c, lock address=8c629710, 10*mode+namespace=15

---

Metalink is pretty vague and not much help with this error (some say it is a VMS enqlm problem, others say it was a bug in v7 and early 8.0). I am running 8.1.6 on Solaris 2.6.

As always, any insight would be greatly appreciated.

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Author: Glenn Travis
  INET: Glenn.Travis_at_wcom.com

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Received on Mon Feb 12 2001 - 10:37:17 CST