Re: Why do we need to setup SYBASE environment variables even after...
Hi Dilip,The difference between the .csh and .sh depends on the type of shell your unix machine is using.You use the .csh file when your unix environment is set to SHELL=path/cshYou use the .sh file...
View ArticleRe: Hints to speed-up select into statement
You're writing 17,000,000 rows in 40 mins,which equates to 425,000 rows per minute. What hardware are you using ? This isn't bad performance on 6 year old kit ;-) Is it new ? Are you using SANs ? (if...
View ArticleRe: Hints to speed-up select into statement
HI Mark, Thanks for your email. I've been checking sp_sysmon output and no IO delays were raised but on the other hand I have 7% of LargeIO denied because of Pool < Prefetch Size. I'll increase my...
View ArticleRe: Hints to speed-up select into statement
Hi Mike, Thank you for your feedback. I did the test by1. try to clear the data cache, to do so I did several 'select count(*) from xxx' on other big tables to make sure TABLE_A was not in the cache....
View ArticleRe: Hints to speed-up select into statement
> Unless mistaken, the time to execute 1 IO is: (122120-3700)/4722 = 25ms > so 25ms for 1 IO seems very slow for me. Am I right? Looks correct to me- its seems very slow.I've got a SAN here doing...
View ArticleTransaction log very high when dropping a column on popular table
Hi, this week, i had to drop a column from a table (table has 40 columns, 3600 rows). So nothing special eh? No big table in size or rows, but the table is referenced in more than 400 objects (stored...
View ArticleRe: Passing Table variable from C# ADO
Hi Mike, I am asking around about this. First the ASE has to support table variable/types before the ado.net driver can do the same. So I am digging around, I will update you on this. Thanks,Dawn Kim
View ArticleRe: Transaction log very high when dropping a column on popular table
Hi Pieter, For doing the ALTER TABLE DROP, do you have the database option "select into" set or are you using the "full logging for alter table" setting? In general, I think you are probably right that...
View ArticleRe: Transaction log very high when dropping a column on popular table
1> create table t1 (c1 int, c2 int)2> go1> insert t1 select id, id from sysobjects2> go(32 rows affected)1> create procedure p as select c1 from t12> go1> dump tran test with...
View ArticleRe: Hints to speed-up select into statement
Thanks Mike, Maybe your explanation about the SAN was right because now whenever I issue my statement, the operation is taking about 5 minutes. I did several tests by restarting the dataserver to clean...
View Articleexplanations required for sp_sysmon output "pool < prefetch size"
Hi team, Could anyone explain me the meaning of the sp_sysmon output? Large I/Os Denied due to Pool < Prefetch Size 337.2 397.2 75861 16.9 % First I though my...
View ArticleRe: Hints to speed-up select into statement
Glad I could help. There are things you can do to improve the SAN though.1) During quiet time - run "select * from tables" - to keep tables high up the SAN tiers2) Rebuild your server with page sizes...
View ArticleEstimated execution time
Hi, In ASE 15.7, the two configuration parameters, 'sproc optimize timeout limit' and 'optimization timeout limit' are both based on 'estimated execution time of the query'. Is there a way to see the...
View ArticleRe: Stored procedure waiting too long to start executing
Bret, I wonder if you had a chance to look at the outputs that I attached from my test run with the information you requested. Thanks,Anil
View ArticleRe: SAP ASE 15.7 on SAN-SSD Storage with SLS11SP3
Did you run sp_indsuspect in 'master'? Did you ever change the sort order of the ASE after creation (even in the past) and not run sp_indsuspect and dbcc reindex on suspect indexes? Chris
View ArticleRe: Estimated execution time
Hi Anil, Try with set statistics time on before executing the store procedure or query in order to get information about parsing and execution. You can also get more info about it on Performance and...
View ArticleRe: Passing Table variable from C# ADO
The ASE support released in 16.0 SP02 is not sufficient to support this ADO.NET feature. We are in discussion to scope the additional work needed. But in the meantime I would suggest loggin a case with...
View ArticleDoes ASE support join elimination on views?
Hi I`ve did a quick test on 15.5 AIX 64bits as follows create table test1 (t1c1 char(10) , t1c2 char(10), constraint pk1 primary key (t1c1))create table test2 (t2c1 char(10) , t2c2 char(10), constraint...
View ArticleWhat would you like to learn about ASE?
The ASE support team is looking for feedback on potential training on SAP ASE; things you would like to know more about that goes beyond a simple question and answer on SCN.If you've ever found...
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