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Running Intel x86-64 VMs with an Oracle DB on Apple Silicon (ARM)
For testing purposes many IT-people traditionally use Virtual Machines (VMs) on their Laptops (often on Oracle Virtualbox). Since Apple moved to its own processor type (Apple Silicon, i.e. ARM architecture), it’s no longer possible to run VMs based on Intel x86-64 on Apple ARM (e.g. on Apple MacBook Pros with M1 or M2 processors). I.e.…
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datapatch fails when running against an Oracle Container Database because of missing temp files in PDBs
When going to 19.15. a customer hit this error when running datapatch: Unsupported named object type for bind parameter at /u01/app/oracle/product/19.0.0.0/dbhome1915/sqlpatch/sqlpatch.pm line 5849, line 4452. After anlyzing the issue it turned out to be related to what has been documented in My Oracle Support NoteDatapatch Failed with Error:“ORA-25153: Temporary Tablespace is Empty“ (Doc ID 2285159.1)…
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Why do we still have HEIGHT BALANCED Histograms and how to get rid of them?
A customer, who is on 19c with his Oracle databases asked me recently why he still has Height Balanced Histograms in his database? E.g. In 12.1. Oracle introduced Top Frequency and Hybrid Histograms, which should replace Height Balanced histograms. There are 2 main reasons why Height Balanced histograms may still be there: 1. Top Frequency…