Oracle

Workaround for bug 19566227/20563128 doing Cross Platform Migration (MOS Note 1389592.1)

In a project I have to move an Oracle 11.2.0.4-DB (around 7TB in size) from Sparc Solaris (called Source in the remainder of this Blog) to Linux x86-64 (called Target in the remainder of the Blog). I.e. a platform migration(…)

random “ORA-01017: invalid username/password” in 12cR2

By Franck Pachot . Since 12cR2 is out, we give our 12c new feature workshop with hands-on exercises on 12.1 and 12.2 releases. When I gave it last month, I had a small problem when doing(…)

Trace files segmented in multiple parts as a workaround for bug 23300142

Today I visited a customer, who deleted a Data Guard configuration (i.e. a temporary Data Guard setup through the broker was deleted). The LOG_ARCHIVE_DEST_STATE_2 on the primary database was set to DEFER temporarily. That resulted in trace-files with name *tt*.trc(…)

How many members for standby redo logs?

By Franck Pachot . I see lot of databases with two members for redo logs and also two members for standby redo logs. Why not, but when asking I realized that there are some mis-comprehension about it. And what was(…)

Oracle 12cR2: changes for login.sql

By Franck Pachot . If you use a login.sql script to set the SQL*Plus environment from your current working directory, you will see that it will not run anymore in 12.2. This is a security feature, and a good occasion(…)

Oracle 12c – How to Prevent License Violation with Active Data Guard

By William Sescu There are some articles floating around how to prevent a license violation with Active Data Guard. Some of them related to an underscore parameter “_query_on_physical” and some of them related to a startup trigger. Both of them(…)

SQL Plan Directives in 12cR2. Behavior is different than in 12cR1.

During the Frankfurter IT Tage I provided a presentation about SQL Plan Directives and how to reproduce a testcase in a test environment for a plan with used SQL Plan Directives (SPD). In that context I did a couple of(…)

OTN Appreciation Day : External tables

As part of the OTN Appreciation Day (see https://oracle-base.com/blog/2016/09/28/otn-appreciation-day/) I’m writing about one of my favorite Oracle features: External tables. Traditionally people loaded data in an Oracle database using SQL*Loader. With the introduction of external tables, SQL*Loader became obsolete (in(…)

Oracle Open World 2016 – Day 4 and 5

At the end of Oracle Open World my last BLOG concerning OOW 2016 covering day 4 and 5: Wednesday is the day of the Party: Oracle’s appreciation event, a concert with Gwen Stefani and(…)

Oracle Open World 2016 – Day 3

On day 3 I visited various sessions about In-Memory and its many new features in 12gR2. Yesterday I already listed some new features of In-Memory. In this post I want to explain the new features more in detail:   In-Memory(…)