When trying backup with this setting and MVCC I did not see any difference.
The database still stays locked for the whole duration of the backup.
What is the real reason to use this setting?
- rami
On 09/06/2011 07:31 PM, Rami Ojares wrote:
Does setting ACCESS_MODE_DATA=R actually increase concurrency when
using MVCC?
Planning to use that for application that does not modify the database.
For example now that I do a backup with org.h2.tools.Script it seems
to keep the db
locked as long as the backup takes. But if I add ACCESS_MODE_DATA=R
(together with MVCC)
would it get rid of all locks?
What about when using classical table level locks with no MVCC does
ACCESS_MODE_DATA
have any effect?
I could not find any clear answer for this in the documentation.
- rami
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