Check your ext3 filesystems for unexpected fscks on reboot

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Nov 8, 2012
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One “feature” of Linux systems is that ext2/ext3 filesystems can be automatically (and unexpectedly) fsck’d upon reboot. Technically, it’s done at mount time, after a configurable number of mounts or days. In theory, I suppose it makes sense to periodically check flaky filesystems running on low-end hardware. In practice, however, it frequently comes as a […]

Getting under the hood with DB2 for TSM Admins

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Dec 21, 2011
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Over at the TSMADmin blog, Chad Small recently posted “DB2 Doesn’t Make a Difference.”  Chad was concerned that he was not seeing a performance boost in his database queries after upgrading from TSM 5.5 to 6.x. As you know, one of the biggest changes in TSM 6.x is that it is now backed by DB2. […]

Disabling caching on a primary stgpool and deleting the volumes in TSM

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Sep 13, 2011
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I recently needed to shrink a primary stgpool with devclass DISK on a TSM 5.5 server  in order to free up space.  Since the stgpool had a device class of DISK and caching was enabled, I wasn’t able to directly shrink the stgpool by moving the data within volumes and then deleting the empty volumes. […]

TSM 6.2 shut down, ADM6017E in db2diag.log

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Aug 11, 2011
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This morning, I noticed that one of my TSM 6.2 servers had stopped running over night.  No DB2 processes or dsmserv were running. I checked the TSM logs, but only found errors from the dsmadmc client: 08/11/11 09:08:52 ANS5216E Could not establish a TCP/IP connection with address ‘TSM1.LANIGERA.COM:1500’. The TCP/IP error is ‘Connection refused’ (errno […]

TSM 6.2.3 released

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Aug 5, 2011
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IBM has released Tivoli Storage Manager v6.2 Fix Pack 2 (6.2.3). Looks like a lot of bugfixes, in particular a DB2 reorg bug. As usual, I’ll let everyone else go first and see what breaks.  Thanks, dudes!

Enabling deduplication on a primary storage pool in TSM 6.2

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Aug 2, 2011
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I recently had the need to enable deduplication on an existing 5.5TB storage pool residing on a TSM 6.2 server.  The storage pool has a FILE (disk-based sequential access) device class, and is used to store virtual volumes from a remote 5.5 server.   So, even though it is configured as a primary pool, its […]

Setting up a CentOS repository

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Jul 14, 2011
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To celebrate the release (finally!) of CentOS 6, here’s how to create a local repository and keep it up-to-date. The first step is to create the directory structure for the repository.  You’ll need about 30GB of free space in the filesystem you use.  Let’s assume we have a mountpoint /repo that we want to use: […]

Oracle and TSM for Databases: Part 2

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Jun 30, 2011
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In the first installment of this series, I discussed some of the basic concepts in using Tivoli Storage Manager for Databases to backup and recover Oracle databases.  In this installment, we’ll look at how to keep TSM and Oracle in sync. When backing up a typical filespace, the TSM backup-archive (BA) client compares what files […]

Check for failed concurrent requests in Oracle EBS 11i

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Jun 30, 2011
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Just a quick SQL script that I wrote to check for concurrent requests that failed in the past 24 hours.  The script is for E-Business Suite 11.5.10.2; it may or may not work on other versions of Oracle Apps.

EMC Record Breaking Tour

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Mar 4, 2011
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EMC brought their “Record Breaking Tour” through St. Louis this week. Since I’ve had little exposure to EMC storage, I thought it would be worth going to familiarize myself with their product portfolio. They did have some of their new marketing on display. There was a Mini Cooper in the lobby, and each segment of […]

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