Upgrade from ASE157 SP63 to ASE16 SP02 PL03
We have all our core dataservers running in ASE157 SP63. We just embarked on a project to upgrade to ASE16 SP02 PL03. We built a test server and did some basic testing of some of the features of...
View ArticleBCP impact on DB log: per-partition bcp vs full table bcp
Anyone came across this issue? I'm running manual sync for DB. 20 threads doing slow bcp, batch size 1k, DB set to trunc on checkpoint, log size is 12GB. With 20 concurrent threads copying data (ASE...
View ArticlePK, FK and other animals...
As one may recall, there are 2 ways to define foreign key constraints in ASE: Traditional one: 1. Create unique index.2. Mark it as PK with sp_primarykey3, Add Foreign key on the referencing table...
View ArticlemonOpenDatabases - additional Counter - ThresholdCrossed
While monOpenDatabases may be handy checking for various DB-related conditions: Active backups (BackupInProgress), Failed Backups (LastBackupFailed), Full DB Log (TransactionLogFull), Existence of LOG...
View ArticleAre you nuts? Index creation order stipulates optimizer index choice???
Some time ago I have been involved in index optimization exercise: applications change, queries evolve, sometimes there is a need to change existing indices - or adjust them a bit - to embrace the...
View ArticleTesting lockless cache in ASE16SP02
In our 64 engine systems we generate 250 to 300 billions logical IOs in a given day. At peak loads we run out of CPU resources mostly from SPINLOCK Contention. We currently have 22 named caches. We...
View ArticleASE16 - sp_add_resource_limit...lock_count - Review
Just the last week we had a scenario where in we ran out of locks on one of our core servers. The worst part was it happened in a span of 16 seconds. We have configured for 2 mil locks. We have tons of...
View Article"session tempdb user log cache" sizing
We are currently running with the default size (2K) on "session tempdb user log cache". We are planning to go to 128K. We know this is going to burn some cache but still worth it as it reduces...
View ArticleDoes ASE support concurrent I/O
Hi,I want to know if ASE support conncurrent I/O. From want I have found, it does but not directly like it does with direct i/o. Does anyone have experience using FS with concurrent i/o on AIX. We are...
View ArticleLatch Free B-trees....more than you wanted to know....
Latch Free B-trees (ASE 16sp02 MemScale option feature) First, a bit of history. Latches are essentially a form of concurrency control that is a companion to locks in a lock based concurrency control...
View ArticleSAP ASE Workload Analyzer Whitepaper
The SAP ASE Workload Analyzer feature was introduced in the ASE Cockpit for SAP Adaptive Server Enterprise version 16.0 SP02 release. This is a powerful feature that enables users to analyze the...
View ArticleASE Cockpit Configuration Tool
Recently, I was using ASE Cockpit and Workload Analyzer for a side-by-side demo of a performance profile using SSD vs spinning disks. During this process I realized that only one of the servers I was...
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Capturing a Workload in SAP ASE 15.7 SP137
What’s New SAP ASE 15.7 SP137 introduces the ability to capture a workload so that it can be analyzed and replayed using version 16.0 SP02 or later SAP ASE Cockpit. Capturing a workload is...
View ArticleYes we can: A single Proc eating up the whole of Proc Cache
We are in the midst of a lengthy project of migrating a large number of ASEs to 16.0.1.2 (stopped on 16.0.1.2 since we bumped into a strange bug with misbehaving unions with sort by column number which...
View ArticleBCP impact on DB log: per-partition bcp vs full table bcp
Anyone came across this issue? I'm running manual sync for DB. 20 threads doing slow bcp, batch size 1k, DB set to trunc on checkpoint, log size is 12GB. With 20 concurrent threads copying data (ASE...
View ArticleLatch Free B-trees....more than you wanted to know....
Latch Free B-trees (ASE 16sp02 MemScale option feature) First, a bit of history. Latches are essentially a form of concurrency control that is a companion to locks in a lock based concurrency control...
View ArticleASE Cockpit Configuration Tool
Recently, I was using ASE Cockpit and Workload Analyzer for a side-by-side demo of a performance profile using SSD vs spinning disks. During this process I realized that only one of the servers I was...
View ArticleHow to reset the sccadmin password for SCC (SAP Control center) ?
Passencrypt utility is located in the SCC bin directory. Passencrypt uses the SHA-256 hash algorithm for passwords used in the PreConfiguredLoginModule in csi_config.xml. Please follow the below steps...
View ArticleWebcast: SAP ASE Workload Analyzer
Optimize Your Database with SAP Adaptive Server Enterprise Workload AnalyzerLearn how this new feature will allow you to capture, analyze, and replay a production workloadRegister nowDate:Wednesday,...
View ArticleWebcast: EMC and SAP Collaborate for Peak Performance
Accelerate Business Transactions - Join EMC and SAP to Find Out How Register now Join SAP and EMC for a special Webcast to learn how our teams collaborated to achieve up to a 420% performance...
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