So you're working with Discoverer 10g integrated with the Oracle eBusiness Suite on Release 12. You've installed and set everything up per Metalink/MOS Note 373634.1 "Using Discoverer 10.1.2 with Oracle E-Business Suite Release 12" plus created a custom application and responsibility to have it's own menu items corresponding to your Discoverer Workbooks/Worksheets.
You login to your new responsibility and click on your new menu entry that you created per Metalink/MOS Note "How to Create a Link to a Discoverer Workbook in Apps R12" and what do you get when you query subledger data such as Payables Invoices, (more...)
Recently, my client deployed a new application and had this intermittent “Deadlock Storm” …
A trace file was sent and I was able to pinpoint the cause of the deadlock and the session that caused it.
The deadlock was a TX enqueue with mode of 4 (S – share) which could be verified by looking at the following lines of the Process State dump:
last wait for 'enq: TX - row lock contention' blocking sess=0x 7000000cb239d60 seq=7849 wait_time=2929705 seconds since wait started=3
name|mode=54580004, usn<<16 | slot=a0028, sequence=283f2
the “enqueue and lock mode” is explained as:
mode=54580004 (see above)
5458 (hex) (more...)
Last week, one of our clients had a sudden slow down on all of their applications which is running on two node RAC environment
Below is the summary of the setup:
- Server and Storage: SunFire X4200 with LUNs on EMC CX300
- OS: RHEL 4.3 ES
- Oracle 10.2.0.3 (database and clusterware)
- Database Files, Flash Recovery Area, OCR, and Voting disk are located on OCFS2 filesystems
- Application: Forms and Reports (6i and also lower)
As per the DBA, the workload on the database was normal and there were no changes on the RAC (more...)
Recently I encountered a performance problem scenario where a simple sqlplus “/ as sysdba” took about 2minutes to finish, this is critical to the client’s business because they have a local C program that loads Call Detail Reports on the database making use of local authentication for most of its operations and Sql*Loader to load the data, so this “2minutes of waiting” when accumulated greatly consumes significant time on their operations and greatly impacts the business.
When I arrived on the client I first checked the alert logs of both ASM (they have a separate home for ASM) and RDBMS, (more...)
- Networking and evaluations
Today was the first day of the second Miracle Masterclass this year: Tanel Põder has come to The Netherlands, saw a room filled with a lot of people (he called it the best seminar even before he started, just because of the amount of attendants) and made me feel I have an awful lot to explore yet. However, that is in fact a good thing and it made me get through the “trains nightmare” today with a smile: I had trouble in the morning since I left home far too late, had to cycle as fast as I (more...)