Posts Categorized: Pythian

Options for Tracing Oracle dbms_stats

Sometimes autotask statistics gathering does not work as expected. A couple of things complicate troubleshooting:
1) DBMS_STATS is an Oracle supplied package
2) Autotask jobs seem to defy some of the accepted tracing methods.
This article details how to get useful tracing from DBMS_STATS
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Oozing Caribou

Meet Oozie’s Workflows Oozie is a workflow scheduler for Hadoop, but that’s not terribly important right now. What is important is that it defines its workflows using an XML dialect. And as all XML things go, the result is… shall we say, less than easy on the eyes and the typing fingers.

UDM is watching you, UDMs

With time monitoring of several thousand targets of different versions and on different operating systems accumulates additional checks and user-defined metrics for specific requirements. With the presence of a dozen super administrator accounts, the Oracle Enterprise Manager environment demands specific monitoring so that checks that were customized and configured for certain targets are not lost….

Linux HugePages for Oracle on Amazon EC2

One of the optimizations available to us when running Oracle on Linux is huge page support. This feature of the Linux kernel enables processes to allocate memory pages of size 2M (instead of 4k). In addition, memory allocated using hugepages is pinned in physical memory. It cannot be swapped out. It is now common practice…

Simple and Quick Way to Get SQL_ID of Query in Oracle

If you need to get SQL_ID of a query from a busy system, which has similar queries scattered all around, it becomes a hassle to get what you are looking for. If the query for which you are getting SQL_ID is big, or contains lots of apostrophes or other not-so-nice characters, then it becomes more…

Log Buffer #340, A Carnival of the Vanities for DBAs

Education is everything. Education can pull you out of poverty, it can propel you into upper echelons. Education can make you see what’s truly important in the life. Education can enable you to appreciate the people. Blogging is all about education. This Log Buffer brings education about database arena from the blogs.

In-Place Upgrade failure from SQL Server 2008 SP1 to SQL Server 2008 R2

Recently I was trying to upgrade SQL Server 2008 to SQL Server 2008 R2. The upgrade failed with error message below.   TITLE: Message Details —————————— The Instance ID ‘MSSQLSERVER’ is already in use by SQL Server instance ‘MSSQLSERVER.INACTIVE’. To continue, specify a unique Instance ID. —————————— BUTTONS: OK ——————————     Brief Background of…

Silent Installation of RAC 12c database

Nowadays everyone is installing #db12c in different variants, posting screenshots, talking about a better tool to run GUI through. However I could not find posts about silent installation of GI and RDBMS. Yes, installation without sleek graphical interfaces, just pure command line in terminal. Thinking about RAC Attack at OOW13 I decided to install a…

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