The dreaded ORA-29024: Certificate validation failure... how to approach...

Certificates can be a pain.

So if you're trying to use UTL_HTTP or APEX_WEB_SERVICE to reach https destinations you'll be on the hook for obtaining certificates for the target server.

I had access to all the certificates separately and loaded them into a nice fresh new wallet. Unfortunately I couldn't get this to work. I'm working an SR with Oracle now but there doesn't seem to be much expertise on troubleshooting issues, even with

Recording query output in a self contained shell script...

General form

if [ -f ~/.bashrc ]; then
. ~/.bashrc

export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=/u01/app/oracle/product/
export ORACLE_SID=orclcdb1

while [ true ]
  sqlplus -s / as sysdba  >> output.txt << EOF
  sleep 10

Session Serialization Example

Quick and dirty query timing script...

A script to check the query execution time as well as the time to retrieve all records via a FOR cur IN construct:

ERR_TOO_MANY_REDIRECTS with Synology Application Portal

I run a few websites from a VM on my Synology NAS. The VM has the typical LAMP setup for running Wordpress and Drupal sites. As it is not exposed directly to the internet, Apache serves up all sites on port 80 and I configured the Synology "Application Portal" to forward both port 80/443 requests to it. Application Portal (nginx behind the curtain) also provides handling of SSL Certs on port 443.
So I created 2 Synology Application Portal entries - one to for serving up incoming 80 to ApacheHost:80, and one for serving up incoming 443 to ApacheHost:80.

Helpful Oracle Feature Matrix by RDBMS Version

I opened an SR recently while I was trying to get a feature to work in 19c... was politely directed to this resource... A listing of Oracle features and what version they're available in...
Not sure when this was made available but I hope they keep it up - I much prefer this to trying to find this info in My Oracle Support docs.
Apex App - Features and Licensing Lookup

Apex 20.2 Upgrade experience...

There are some impressive new features in 20.2. unfortunately my latest upgrades are not going so well.

I see we've got a bundle patch already! Patch 32006852: PSE BUNDLE FOR APEX 20.2 (PSES ON TOP OF But I don't see any of the issues I encountered being addressed.

From most to least severe:

1) ORDS 19.1 munged 3 times over 3 installs

impdp too smart for its own good - ORA-2000 and missing indexes on target...

As we move on to 12.2 and 19c we're seeing more instances where simple schema export/import migrations are missing objects on the target database.

If you do object counts after a simple schema migration... Or see something like this pop up in your impdp logs:

Quickly create and implement a self signed cert for Tomcat...

Create keystore with a self signed cert

keytool -genkey -keystore /path/keystore.jks -alias selfsigned -keyalg RSA -keysize 4096 -validity 720

Enter details for cert and enter password = password123

Update Tomcat server.xml

Should return this:

Golden Gate abends due to zeroed out records in trail file...

If you are getting odd abends on your Golden Gate replicats due to trail file corruption, make sure you visit your filesystem options for the filesystem where the manager process writes the trail files.

Long story short is that we were finding large swaths of Zeroes appearing in our trail files. Using logdump I could see the header of the trail file was OK, but somewhere down the line a valid record would be followed by straight up zeroes. Lots of them. I verified this using logdump and a hex editor.

Connection encryption is killing my performance! Help!

I find Encryption is blamed for a lot of performance issues so wanted to find out for myself how much of a performance hit we might be taking for common operations. There ain't no free lunch. Adding any extra processing or manipulation to an operation is going to add time to that operation.


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