Infrastructure at your Service

All posts by Franck Pachot

Franck Pachot
Technology Leader
Senior Consultant

OCM 12cFranck Pachot has 20 years of experience in Oracle databases. Through his expertise as a DBA, Oracle expert, data architect, and performance specialist, he is able to cover all database areas: architecture, data modeling, database design, tuning, operation, and training. Franck knows how to enable an efficient collaboration between the developers and the operational team when it comes to troubleshooting issues or performance tuning.

RSSOracle ACE Franck is Oracle Certified Master (OCM 12c), Oracle ACE Director and proud member of Oraworld-team.

Next public appearance:
OOW16
San Francisco, Sept. 18

Single-Tenant Oracle Database 12c:
Multitenant Features for All Editions
 
Nuremberg, Nov 15-18th

Multitenant new security features clarify DevOps / DBA roles

Birmingham, Dec 5-7th

12c Multitenant: Not a Revolution, Just an Evolution
Statistics Gathering Best Practice & Statistics Advisor


Franck Pachot

Encryption in Oracle Public Cloud

By | Database Administration & Monitoring | 2 Comments

Oracle Transparent Data Encryption is available without option on the Oracle Public Cloud: Standard Edition as well as Enterprise Edition (EE, EE-HP EE-EP, ECS). More than that, the DBaaS enforces TDE for any user tablespace even when not specifying in the CREATE TABLESPACE. It you are not familiar with TDE key management (wallets) then you have probably encountered ORA-28374: typed master key not found in wallet. Rather than another tutorial on TDE I’ll try to…

 
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Franck Pachot

Observing DML restarts caused by invalidations

By | Database Administration & Monitoring | No Comments

Usually, cursor invalidations do not interrupt the current execution of the cursor. You can even drop a table while a query on it is running and the query may end successfully. However some invalidations will throw internal errors that are catch and the cursor execution restarts transparently. I’ve reproduced one here to show the symptoms: it’s a different EXEC_SQL_ID so the restarts are not accounted within the same SQL Monitoring.  

 
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Franck Pachot

12cR2: Upgrade by remote clone – workaround ORA-17630 in DBaaS

By | Database Administration & Monitoring | No Comments

Easier than unplug/plug, you can move pluggable databases with remote cloning. It’s the same idea but you don’t have to manage the files yourself: the are shipped through database link. However, this uses the ‘remote file protocol’ and it fails with version mismatch: ORA-17628: Oracle error 17630 returned by remote Oracle server ORA-17630: Mismatch in the remote file protocol version client server  

 
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Franck Pachot

12cR2: CREATE_FILE_DEST for PDB isolation

By | Database Administration & Monitoring | No Comments

Two years ago I filled an OTN idea to ‘Constrain PDB datafiles into specific directory’ and made it an enhancement request for 12c Release 2. When you provision a PDB, the PDB admin can create tablespaces and put datafiles anywhere in your system. Of course this is not acceptable in a cloud environment. 12.1 has a parameter for directories (PATH_PREFIX) and 12.2 brings CREATE_FILE_DEST for datafiles.  

 
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