Performance degraded after migration from Datstage 7.5 to 8.
Posted: Thu Dec 01, 2011 9:52 am
Hi All,
We have recently migrated Datastage Project from 7.5 to 8.5, But we are facing performance issues, The old project and new project, both are on same UNIX box. There are some jobs in new project taking as much as double the time of what they were taking in old project.
We have taken a job, having performance issue . The Design of the job is as given below.
DRS_SATGE --> Transformer + Lookup --> DRS_STAGE
The Source and target tables are in Oracle database.
and in order to find out bottleneck, we devided the Job into three jobs
Job1
------------------------------------------------
DRS Stage --> Sequential_File_1
Job2
-------------------------------------------
Sequential_File_1 --> Transformer + Lookup --> Sequential_File_2
Job 3
---------------------------------------------------
Sequential_File_2 --> DRS_STage
We run these three jobs in Datastage 7.5 and 8.5
The Performance of Job2 is almost same in both the version of Datastage,
But the performance of Job_1 and Job_3 in 8.5 side is not comparable with 7.5 side.
We replace DRS stage with OCI stage but it didn't help much.
Are there any settings or parameters which need to fix in 8.5 .
Please suggest.
Thanks,
Nitin Swarnkar
We have recently migrated Datastage Project from 7.5 to 8.5, But we are facing performance issues, The old project and new project, both are on same UNIX box. There are some jobs in new project taking as much as double the time of what they were taking in old project.
We have taken a job, having performance issue . The Design of the job is as given below.
DRS_SATGE --> Transformer + Lookup --> DRS_STAGE
The Source and target tables are in Oracle database.
and in order to find out bottleneck, we devided the Job into three jobs
Job1
------------------------------------------------
DRS Stage --> Sequential_File_1
Job2
-------------------------------------------
Sequential_File_1 --> Transformer + Lookup --> Sequential_File_2
Job 3
---------------------------------------------------
Sequential_File_2 --> DRS_STage
We run these three jobs in Datastage 7.5 and 8.5
The Performance of Job2 is almost same in both the version of Datastage,
But the performance of Job_1 and Job_3 in 8.5 side is not comparable with 7.5 side.
We replace DRS stage with OCI stage but it didn't help much.
Are there any settings or parameters which need to fix in 8.5 .
Please suggest.
Thanks,
Nitin Swarnkar