Oracle Database 18.3.0 Upgrade on premises

As Oracle Database 18c is now available on Linux on premises, I blogged about the installation already. And the next logical step is the Oracle Database 18.3.0 Upgrade on premises. In this case I will show an upgrade on the command line from Oracle 11.2.0.4 to Oracle 18.3.0. A DBUA upgrade will follow in a separate blog post later. Oracle Database 18.3.0 Upgrade on premises Before you can start with the upgrade, you may download the software first, and then install it: Oracle Database 18.3.0 on premises is available on Linux Oracle Database 18.3.0 Installation on premises If you read…

Create a database with NON-DEFAULT Time Zone

One requirement of Transportable Tablespaces (and of course Full Transportable Export/Import as well) is to have identical database character sets AND identical time zone settings. Problem Source database has a lower time zone setting than the default target database in the destination home. Lets assume you’d like to migrate an Oracle 11.2.0.4 off IBM AIX and migrate it into Oracle 12.1.0.2 on an Exadata meaning Oracle Linux 6. The source time zone version if it has never been upgraded would be TZ V14 – whereas the new Oracle 12.1.0.2 database you’d create would get TZ V18 by default. Solution 1…

Transportable Tablespaces and READ ONLY in Oracle Database 12c

We recently worked with a customer who noticed that they were not able to use transportable tablespaces to connect the same tablespace data files to two databases at the same time, even after setting the tablespaces READ ONLY in SQL*Plus. This is new behavior in 12c, and many customers are not yet aware of this change. Here are the details of what changed, why, and how you might want to deal with it if the changes affect your environment. What Changed? Starting in 12.1, data pump sets tablespaces read write during the import phase of a transportable tablespace migration. This…

Full Transportable Export/Import – Things to Know

This blog post is an addition to: Full Transportable Export/Import – Migrating an 11.2.0.4 database to Oracle Database 12c- into the Oracle Cloud Seth Miller commented the pitfall of having a serious issue during the Data Pump run, Data Pump exiting and not finishing, and you’ll have to do the entire backup/restore/incremental-roll-foward thing again. Without any doubt, this is no fun at all. So let me point out a few things to take into consideration – and some of them are not obvious I guess. Do you need to backup/restore/incremental-roll-forward again? When you let do Data Pump all the manual…

Let’s do the Time Warp again!

Once you start reading about Daylight Saving Time changes in MyOracleSupport you’ll find still a lot of notes explaining this and that and back and forth. But sometimes there seems to be a bit too much information – and lacking clear instructions. Once a customer called that the “Time Zone Spaghetti” after reading MOS notes about DST for several hours ending up with the note where he has begun to read before still not clear what to do now 😉 I’m using usually the scripts from MOS Note:977512.1 as you’ll just have to exchange the DST version you are upgrading…

New Time Zone Patch DST V18 is available

Sorry for not updating the blog more often at the moment – but more updates will come soon as I play around with Oracle Restart and single instance databases in ASM with Oracle 11.2. Just on the side there’s a new time zone patch to DST V18 available since May 2012. You can download it via PATCH download from MOS with the patch number: 13417321 What do you think? Will Lufthansa operate a faster jet the other night? Will the jet stream be more powerful? Or a better type of fuel? Or is it just the travel portal which hasn’t…

Are you still on Daylight Savings Time?

Central Europe and many other countries switched back from Daylight Savings Time to regular time on this Sunday’s night. But others don’t. Thanks to a “wise” decision in 2006 the US will switch back to regular time in one week. And another “wise” man has decided that there’s no need for Russia to switch back to regular time (see the last paragraph on “DST” in this linked Wikipedia article) – so Russia will stay forever on DST being one hour ahead 😉 Samoa will simply jump from the end of the time zone puzzle now heading it end of this…

Time Zone Upgrade might be slow

One of the best things with my role in Oracle’s Upgrade Development is: I work with customers – and I learn a lot from customers. This is an issue Richie and his team from Accenture in Ireland brought to my attention. I try to support them currently in an EBS database upgrade. And he did highlight a potential issue with the post upgrade time zone change to me: Bug 10209691 – slow performance on ALL_TSTZ_TAB_COLS Workaround: alter session set “_with_subquery”=materialize; All together the upgrade of an Oracle 9.2.0.8 EBS 11i database takes approx 30 minutes. And we still do recommend…