Re: master..syslocks vs master..monLocks
Thanks Interesting you say about lock promotion - we have page level lock promotion set at 50,000 but we're seeing replication user having 100,000 page locks even though no one else is on the...
View ArticleRe: master..syslocks vs master..monLocks
Depends what your dsi is doing. If it is doing a bunch in singleton inserts in a xact this won't escalate. Escalation is only on a per scan basis. An individual scan of a table within the context of a...
View ArticleRe: master..syslocks vs master..monLocks
Mike I have two positive things to say about monLocks table compared to syslocks. - It is NOT materialized for each query so even in a space crunch for tempdb queries on it will run. Multiple runs...
View ArticleRe: master..syslocks vs master..monLocks
"Multiple runs on syslocks when lock counts are high can stress out the server."Do you have some evidence to back that up? My tests show the exact opposite, monLocks is the problem one.Agreed it does...
View ArticleRe: master..syslocks vs master..monLocks
No I do not have any tests designed just for this :-) I am going by the materialization (for each SPID) requirement for queries on pseudo/fake tables.So if you ensure enough temporary space at your...
View ArticleRe: master..syslocks vs master..monLocks
Sorry about my last post and the giant font, that'll teach me for posting from a mobile device. It's also not editable (why?) like my other posts so we're stuck with it! You make a good point regarding...
View ArticleRe: master..syslocks vs master..monLocks
I too wondered about the font size :-) Thanks for the clarification. Typically my attack for high number of locks on a production server begins with monProcessActivity table which has LocksHeld...
View ArticleRe: master..syslocks vs master..monLocks
Thanks for the explanation. > I have never seen monLocks *cause* problems that syslocks would not have (and unfortunately,> attempts to use syslocks instead rather proved it). We're using 15.7...
View ArticleRe: master..syslocks vs master..monLocks
Jeff, Nothing is going sideways. We're not theorising about problems with monLocks we're only relaying findings. If it shouldn't be performing like this then we need to work out what the problem is....
View ArticleRe: master..syslocks vs master..monLocks
Going sideways was simply a comment that there was a lot of theorization about possible issues when in reality not all the full information was given..... ....however, in your stack trace: pc:...
View ArticleRe: master..syslocks vs master..monLocks
> that I found disturbing was the comments that monLocks wasn't usable. > Sorry ....been there done > that. It is usable. You just have to approach it differently. Can anyone explain how...
View ArticleRe: master..syslocks vs master..monLocks
Hi Mike, I do not want to go in to much about the internals of SAP ASE data structure, memory allocation and how we protect this structures but I logged that change request and I good knowledge of the...
View ArticleRe: master..syslocks vs master..monLocks
In principle it is usable (or maybe was?), agreed :-) I too have used it many times in the past. But..until someone shows me some evidence on 15.7 SP13x of it not being exponentially slower than...
View ArticleRe: master..syslocks vs master..monLocks
As you correctly suspected querying the native RPC does start returning rows almost immediately going straight into mdarpc_sendrow() from mda__traverse_lock_hashtable() so maybe the issue relates to...
View ArticleRe: master..syslocks vs master..monLocks
@Simon - Not sure.....I got burned too many times with CIS in the past, so my MDA collector (in java) does strictly RPC calls to $monWhatEver table @Mike W - that is what I meant by a different...
View ArticleUnable to install ASE 16 on AIX in console mode
Hello, I am trying to install ASE 16 provided by a vendor on a PowerPC based AIX server. The installation doesn't go through. I see the following in ASE_Suite.log file:Summary-------Installation:...
View ArticleRe: master..syslocks vs master..monLocks
So for 1,000,000 locks: dump of syslocks for a spid across a local network (128MB of data) - 3 minutes start [2015-07-02 18:35:59]end [2015-07-02 18:38:58] Dump via $monLocks RPC for a spid across a...
View ArticleRe: master..syslocks vs master..monLocks
What's SAP/Sybases advice for use of MDA tables ? We're running a periodic collector to summarise the data and store for later viewing. We do this all within SQL. Is this not how MDA is meant to be...
View ArticleRe: master..syslocks vs master..monLocks
Just checking the configuration settings and if its using CIS, then would the CIS settings make a difference ? eg "cis cursor rows" is set to 50 by default - would increasing this improve performance...
View ArticleRe: master..syslocks vs master..monLocks
The time that test took is determined pretty much solely by the speed of the network and the disk being written to. The results start returning immediately.If you run an equivalent select from monLocks...
View Article