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OCI-managed MCP Server: Troubleshooting ORA-12170 errors with Private...
We recently worked on a customer proof of concept (PoC) involving Oracle databases hosted in Oracle Cloud Infrastructure (OCI) within private VCN subnets. The goal was to evaluate OCI-managed MCP...
View ArticleImport order matters for GoldenGate instantiation filtering
When migrating a large database with GoldenGate, most of the volume is sometimes in old partitions which no longer change. A common shortcut is to move them first with expdp/impdp, even before...
View ArticleRemoving instantiation filtering from a GoldenGate replicat
In a recent blog, I explained how instantiation filtering works. DBOPTIONS ENABLE_INSTANTIATION_FILTERING makes a replicat discard any record whose commit CSN is at or below a table’s instantiation...
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Archiving 5 TB from Oracle into SQL Server: views, indexes and compression...
At the end of part 1 the data was across, at 42,170 rows per second into a database that could not answer a single question. Every nonclustered index disabled, the largest tables loaded as heaps with...
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Oracle Fusion Middleware to the Cloud
More and more often, we are contacted to assess, challenge, and advise on the migration of Oracle Fusion Middleware platforms to the cloud. These discussions usually involve critical environments...
View ArticleGoldenGate Instantiation CSN Explained
For more than ten years (GoldenGate 12.2, released in 2015), GoldenGate has provided a way of performing initial load of tables with a per-table instantiation CSN. But when migrating a database or...
View ArticleDDL Filtering in GoldenGate Extract and Replicat
When replicating data with GoldenGate, you often want DDL changes (table alterations, new tables, dropped indexes, etc.) to follow alongside DML. But replicating all DDL is sometimes dangerous...
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Listing and Querying Oracle Enterprise Manager Metric Extensions
I recently wanted to work on Metric Extensions automation, and realized the task was a bit more complicated than I thought. My original idea was to look into the emcli verb list, but I was unlucky. In...
View ArticleTNS_ADMIN – which *.ora files Oracle will use
Introduction Oracle uses some configuration files (*.ora) related to the network. tnsnames.ora: A mapping of an alias name to a connect string for Oracle. A kind of “/etc/hosts” for Oracle databases...
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Oracle Forms: Java Web Start or FSAL?
A customer recently asked me about the difference between Java Web Start and the Forms Standalone Launcher for running Oracle Forms applications. I found it a very good question. From the user’s...
View ArticleFixing ORA-00904 on Oracle hidden columns during SSMA data migration
SSMA (SQL Server Migration Assistant) handles the whole Oracle-to-SQL Server move: it reads the source data dictionary, converts the schema, then generates a SELECT per table to pull the rows across....
View ArticleChecking Long Running Transactions in GoldenGate
When doing complex operations with GoldenGate, checking for long running transactions is mandatory if you don’t want to miss transactions. Let’s look at two ways of retrieving such information, first...
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Oracle: Standard Edition 2 available with 23.26.3.?
When downloading Release Update 23.26.3., I could see this: As you can see in the Product info it also has “Oracle Server – Standard Edition”. However, I haven’t found anything official yet. I tried...
View ArticleTemporary tablespace and ODA 19.31.
I recently patched Oracle Database Appliances (ODAs) to 19.31. For DBs with more than 1 tempfile in the temporary tablespace I got an error during the “odacli update-dbhome” : # odacli describe-job -i...
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Oracle Forms & Reports 14.1.2 Patching Issue
During a recent maintenance activity, I patched an Oracle Forms & Reports 14.1.2 environment on Linux. The patching itself completed successfully, but immediately after the restart, Oracle Reports...
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Zabbix – Oracle backups monitoring
If your Oracle database is running in ARCHIVELOG mode, monitoring your backups is essential.Without proper backup supervision, the Fast Recovery Area (FRA) can eventually become full, which may block...
View ArticleAutoUpgrade powered easy download and installation of Oracle AI Database 26ai...
With latest versions of AutoUpgrade, downloading and installing Oracle AI Database 26ai on Linux x86 on-premise has become a very simple process. If you want to give a try to Oracle Database 26ai,...
View ArticleExascale new clone and snapshot capabilities
One of the most game changing capabilities of Exascale are the new clone and snapshot features compared to previous options available with ASM / ACFS. And since the business requirements for clones or...
View ArticleMySQL Metadata Store service not able to start on an ODA
I was recently doing some consulting on some ODA at one of our customers, and I faced an issue with the DCS Agent and the MySQL Metadata Store. In this blog, I will show you the problem and how I...
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ODA 19.30 prepatch report failing on OS patches
I had to recently patch several ODAs from 19.28 to 19.30, and one ODA patching failed running the prepatch report which is mandatory and helpful before going to patch the ODA. For each step (server,...
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