[#CORE-1970] Lock conversion denied (215) error may occurs

Firebird Core

Lock conversion denied (215) error may occurs

Created: 30/Jun/08 05:49 PM Updated: 23/Feb/11 09:41 AM

Component/s:

Engine

Affects Version/s:

2.0.0, 1.5.4, 2.0.1, 2.0.2, 2.0.3, 1.5.5, 2.5 Initial, 2.1.0, 2.0.4, 2.1.1, 2.0.5, 1.5.6

Fix Version/s:

2.0.5, 2.1.2, 2.5 Beta 1

Time Tracking:

Not Specified

File Attachments:

create.sql (2 kB)
2.

update.sql (0.5 kB)

Environment:

Only Classic Server is affected. Tested by me on Windows only but must be OS independent.

Issue Links:

Depend

This issue depends on:

~~CORE-1984~~ Lock manager reported false deadlocks if one of deadlock participants waits with permitted timeout

~~CORE-2000~~ Lock manager reported false deadlocks under high load

Planning Status:

Unspecified

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Vlad Khorsun added a comment - 30/Jun/08 05:53 PM

Create test database with create.sql script.
Run few instances of update.sql simultaneously. I used following command :

for /l %i in (1,1,32) do start isql -i ...\update.sql ...\TEST215.FDB -user SYSDBA -pass masterkey

All 'lock conversion denied' errors will be logged in firebird.log