ORA-16789: standby redo logs configured incorrectly
The DG Broker is reporting some warnings for one of my databases in the Broker configuration. DGMGRL> show database orcl Database - orcl Role: PRIMARY Intended State: TRANSPORT-ON Instance(s):...
View ArticleYet Another Reason To Upgrade
As I usually do, I fire up lots of questions on the MOSC and OTN forums and pick and choose which ones I want to answer. This morning, I came across a post from a user who was asking questions about...
View ArticleThe Performance Tuning Maze
One day, you wake up and find that you are an Oracle database administrator. The gods have finally seen the light to your true potential and allowed you to work in the best job in the world! You begin...
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Filtering Alert Logs in EM13c
I’ve been receiving ORA-1555 (snapshot too old) alerts from my databases via Enterprise Manager 13c. For production environments, these are good alerts to receive and can be an indicator that I have an...
View ArticleRU or RUR?
Oracle 12.2 has changed the patches. It used to be so easy back in the day. Just download the Cumulative Patch Update (CPU) and apply the latest/greatest security patches. Then Oracle decided security...
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Where are my Patches?
I thought I had posted something like this on my blog previously but I couldn’t find it when I was looking for someone earlier today. So here is the information anew. If my old blog post is not more...
View ArticleLarge .patch_storage
I received an alert from Enterprise Manager that one of my production databases was getting low on disk space. I tracked it down to $GRID_HOME/.patch_storage which was consuming 30GB of my 90GB drive....
View ArticlePRVG-2027 Owner of file is inconsistent across nodes
I recently ran into an issue right after I applied the latest/greatest CPU to an Oracle RAC system. Both GI and RAC were patched. The GI alert log showed error messages like: 2018-05-13 22:03:01.121...
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RAC Sequence Contention
I recently ran into a case where selecting the next value from a sequence was causing contention issues in Oracle RAC. See this screen shot from Lighty (click on the image to see a larger picture) The...
View ArticleORA-65139: Mismatch between XML metadata file and data file
I was trying to plug a non-CDB into our new Multitenant environment as we make the move to Multitenant. I am going to create a golden image of our production non-CDB and then all dev and test databases...
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Oracle DBA Mentor
My new book is now available from Apress. Oracle DBA Mentor is different from most other Oracle books. The others will teach you some great things and show you how Oracle works and how you should use...
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GI 19c RPM Package Manager Database
I am upgrading an Oracle 18c Grid Infrastructure cluster to the new Oracle 19c version, release for on-premises last week. The OUI pre-requisite checks finds two issues that need my attention. The...
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Oracle Documentation
Oracle has changed their documentation, making it much harder to find the Oracle Database docs. To access the docs, go to http://docs.oracle.com. From there, you could click on the Database category....
View ArticleORA-01173 Opening PDB in Upgrade Mode
I am working on upgrading a Multitenant environment from Oracle 12.1.0.2 to Oracle 19c. I have 40 PDBs supporting all sorts of dev and test environments. We typically upgrade a few dev databases first...
View Article19.3 PDB Close ORA-65107 ORA-16078
When closing a cloned PDB in 19.3, I am receiving the following errors: ORA-65107: Error encountered when processing the current task on instance:1ORA-16078: media recovery disabled This may exist in...
View ArticlePDB Unplug ORA-17528 Error
I am trying to remove a PDB in Oracle 19.3 that is no longer needed. I get the following error: SQL> alter pluggable database DEV_PDB close immediate instances=all; Pluggable database altered....
View ArticleIt’s In The Details
I have an Oracle 12.1.0.2 Multitenant database that I’m trying to remove a PDB from. However, I mistakenly removed the storage from the database server and the PDB cannot access its files. When...
View ArticleInvalid ODCIPARTINFOLIST on Upgrade
I have been working on upgrading Oracle 12.1.0.2 databases to Oracle 19.3 when I ran into a problem that took me quite awhile to figure out. I did a search on My Oracle Support and a quick Google...
View ArticleThe Value of Data Over Time
By now, everyone knows that data is very valuable. Major corporations use data to make decisions that hopefully drive the business forward and achieve a higher level of profitability. As database...
View ArticleORA-1114 Running Datapatch
I have an Oracle 19.3 Multitenant database that I am attempting to apply the 19.7 Release Update. The RU was installed by opatch just fine. But datapatch will incur the ORA-1114 error. I get errors...
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