Encrypting / Decrypting Tablespaces Online / Offline in a Data Guard...
An earlier post showed the steps for encrypting/decrypting tablespaces both online and offline in a single database.This post shows the steps for doing the same when there's a data guard...
View ArticleSYS User Account Password Expiry Date Not Updated After Password Change
Due to the bug 28538439 the sys user password expiry date does not get updated on the dba_users view after a password change. This could be reproduced as shown below (DB version 19.13).SQL> select...
View ArticleUsing UR=A to Connect to Databases in Nomount Mode
Time to time there are situation were connecting to a database in nomount mode is needed. Most noteably is the data guard standby creation. When a database is started in nomount modestartup nomount;...
View ArticlePL/SQL Blocks, Roles and Definer's and Invoker's Rights
As per Oracle security doc"definer's rights and invoker's rights are used to control access to the privileges necessary during the execution of a user-created procedure, or program unit.In a definer's...
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Enabling MFA for IDCS User Accounts in OCI
OCI has two types of user accounts IAM native and IDCS (also refered to as federated user accounts). For IAM accounts user has to enable MFA for their own account. Admin cannot enable MFA for another...
View ArticleDBMS_CLOUD Package in DBCS VM DB
The dbms_cloud package comes built in in autonomous databases. Starting with 19.9 the dbms_cloud package could be installed in other databases as well. This has been documented in 2748362.1. There were...
View ArticleLoading Data to ATP from Object Storage
There are serveal ways to load data to ATP from object storage. This post shows examples of few of those options.Copying data from object storage to a table in ATP1. The copy_data method in dbms_cloud...
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Using Auto Scaling in ATP
Autonomous Transaction Processing (ATP) databases allows auto scaling where OCPU scale up 3 times the baseline OCPU count. This feature is enable by default. This post looks use of auto scaling in...
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Upgrading Enterprise Manager Cloud Control from 13.4 to 13.5 - 1
This is the first post on upgrading EM Cloud Control (EMCC) from 13.4 to 13.5. The upgrade steps mentioned here have been tried on a system that had the repository database converted to CDB as...
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Upgrading Enterprise Manager Cloud Control from 13.4 to 13.5 - 2
This is the second post on upgrading EMCC from 13.4 to 13.5 The previous post mentioned pre-req tasks to be carried out before the installation. The approach used in this case consists of two phase....
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Upgrading Enterprise Manager Cloud Control from 13.4 to 13.5 - 3
This is the third post on upgrading EMCC from 13.4 to 13.5. Previous posts showed how to complete the pre-req work and upgrade the EM. This post shows how to upgrade the central agent to 13.5.Central...
View ArticleOracle Restart Install Failures on RHEL8
19.6 or 19.7 DB software could be installed in either RHEL8 or OEL8. There is a dedicated MOS doc on this (2668780.1). However, there's no such document exists for Oracle Restart. Following GI and DB...
View ArticlePoint-in-Time Recovery of Tables
Oracle allows point in time recovery of tables from backup. In high-level the recover table command creates an auxiliary instance (and the PDB) and export the table(s) to a dump file or import into the...
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ATP Auto Indexing
ATP DB has the ability to automatically create indexes based on the improvment those indexes would bring to the query execution. This post explore the usage of this feature. By default auto indexing is...
View ArticleInitiating Switchover on a Physical Standby
It seems the best instance to intiaiate the switchover changes based on whether data guard broker is used or not. Oracle documentation states when performing switchover using SQL, the switchover...
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Upgrading Oracle Restart from 19c to 21c on RHEL 7
This post shows the steps for upgrading the grid infrastructure portion of 19c Oracle Restart to 21c.1. The current Oracle restart configuration is as below.Resource Name Type Target State...
View ArticleThe controlfile sequence# has now reached architectural limit
A test database (an out of support 11.2.0.4) running in noarchive log mode had the following message on the alert log.*************************************************************************ATTENTION:...
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Far Sync Targets are not Discovered Correctly by OEM Auto Discovery Process
If there are far sync instances in a data guard configuration then those will not be correctly identified as far sync instances by the OEM target discovery process. There were two posts related to the...
View ArticleActive Data Guard instances are not supported with DBMS_ROLLING
There is an earlier post on how to use dbms_rolling for database upgrade. The configuration used in that post consists of two instances. The data guard configuration this post is based on had three...
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Unplug-Plug-Upgrade from 19c to 21c Using Autoupgrade
This post shows the steps for upgrading a 19c PDB with autoupgrade tool using the unplug-plug-uprade method. The 21c CDB is called cdb21c and 19c CDB is called testcdb. The PDB that will be unpluged...
View ArticleOut of Place (OOP) Patching of Oracle Restart
Oracle grid infrastructure deployed in a RAC configuration has the option switchGridHome for out of place patching. But this option doesn't work with Oracle restart../gridSetup.sh -silent...
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Upgrade from 19c to 21c Using Autoupgrade
This post shows the steps for upgrading a 19c database (CDB + PDB) with autoupgrade tool. There's an earlier post which shows upgrading PDB form 19c to 21 using unplug-plug-upgrade method. If any...
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Upgrading 11.2.0.4 to 19c Using AutoUpgrade
There is an earlier post which shows how to upgrade 11.2 Oracle restart to 19c. However, in that post the database was upgraded using DBUA and left as a non-CDB. Autoupgrade (AU) could also be used to...
View ArticleOut of Place (OOP) Patching of Oracle Restart 21c
Previous post showed OOP for 19c Oracle restart. Things are much simpler in 21c and can expect the same for 23c once released. The -switchGridHome option is supported for Oracle Restart in 21c (Oracle...
View ArticleRestore Standby Database from Standby Backups
This post shows the steps for full restoring (controlfile + data files) for a standby database using standby database backups. The same could be achieved using restore from service (2283978.1)....
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