I wanted to compile the sqlite3 shell on Windows, using my Free Embarcadero C compiler, but it didn’t work. It was quite easy to fix, but if you are affected, read on. Continue reading Compiling Sqlite3 Shell with Embarcadero/Borland C.
TraceMiner has been updated and rewritten. Numerous bugs and foibles have been fixed.
TraceAdjust is a new, useful, utility to carry out some pre-processing on a trace file before you have to use your own weary eyes to work thorough potential Oracle performance problems! That’s why I wrote it!
TraceMiner has been updated again. Mostly bug fixes, but there’s a little enhancement too. The current release is 0.21.
I have a table with dates in, and some NULLs. Two people, on the same database, running the same
SELECT query, in the same schema, with the same privileges, get vastly differing results. Why? Fine Grained Auditing is not at play here. Continue reading Interesting Foible with Oracle Dates
I recently posted a useful
oraenv for Windows utility. This has been updated so that you can run it in batch files by passing the desired Oracle SID on the command line. Details at http://qdosmsq.dunbar-it.co.uk/blog/2016/08/oraenv-for-windows/
Having recently had to learn a whole new way of working when I took on a contract migrating a database to the Windows “cloud”, I realised that there’s no equivalent to the useful Unix
oraenv utility. I had to write my own. Give me a
bash shell any day! Continue reading Oraenv for Windows
It’s always nice to know which extra cost Oracle options are enabled, whether deliberately or silently as the result of some patching that has taken place. Continue reading Which Extra Cost Oracle Options is my Windows Server Running?
I found a broken check constraint, one that simply wouldn’t work, on a database. It was created as:
... CHECK(COLUMN_NAME IN ('Y','N',NULL)) ;
Try it yourself, it doesn’t work! Anyway, I needed to find if there were any other check constraints broken in this manner, so I did the following:
This applies to Linux, Unix as well as Windows, but affected me on a Windows 2012 Server running Oracle 220.127.116.11 Enterprise Edition.
My user on the server was an administration user, but not in the
ora_dba group. This is required to
connect / as sysdba within SQL*Plus. The SYS password had been changed recently but whoever did it, did not update the password vault. The users were urgently requiring their database be started, I was the only DBA in the office, the SYS password was unknown, and my user didn’t belong directly to the
ora_dba group. What to do? Continue reading How to Start an Oracle Database When You Are Not in the DBA Group
For no reason, after many weeks of use, RMAN suddenly cannot connect:
rman target sys/******@dbadb01 catalog ... ... RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-00601: fatal error in recovery manager RMAN-03010: fatal error during library cache pre-loading RMAN-10038: database session for channel default terminated unexpectedly
I’ve recently begun a new contract migrating a Solaris 9i database to Oracle 11gR2 on Windows, in the Azure cloud. I hate windows with a vengeance and this hasn’t made me change my opinion!
One of the planned improvements is to have everyone using a standard, central
tnsnames.ora file for alias resolution. A good plan, and the company has incorporated my own tnsnames checker utility to ensure that any edits are valid and don’t break anything.
I found that the
tnsnames.ora in my local Oracle Client install, was not working. Here’s what I had to do to fix it. Continue reading Tnsnames.ora, IFILE and Network Drives on Windows
As a contractor I often have to fill in and sign various contract agreements. These are usually tens of pages in length, and while I only have to sign one page, I still must scan in and send back each and every page, even the untouched ones. It would help if a PDF with form filling abilities was supplied, but hey, that’s only rarely the case. This is how I do it. (On Linux – Windows users mileage may vary!) Continue reading Printing, Completing & Scanning PDF Documents
If you find that your Raspberry Pi 3, the new one (at the time of writing anyway!) with built in WiFi and Bluetooth, loses the WiFi connection after a period of inactivity, then this thread on the Raspberry Pi Forums, which will open in a new tab, might be of interest. Have a read. If you want to miss out on the preliminaries of the thread, start reading here instead.
Basically, all you need to do is:
sudo iw dev wlan0 set power_save off
I’m not affected yet, but I’m making a note here, just in case!
Have you ever needed to trawl through an Oracle Trace file to extract the SQL statements executed and found a whole load of bind variables have been used, so you need to find the
BINDS section, extract the values, and virtually paste them into the parsed SQL statement?
No? This utility isn’t for you then. Continue reading TraceMiner – An Oracle Utility to Mine 10046 Trace Files