An year ago i've wrote the post "Time to upgrade to 19c"
Now it is the time to refresh the picture.
After the time new release have been issued, the question arises - is it time to move to the new release?
Is it good enough to work in production by now?
Usually users wait a while for a release to be "good enough" and for bugs to be fixed.
What is the criterion we may use to define whether a release is good and fine tuned enough?
As one of the criteria, we can take the number of bugs that are fixed in the each quarterly patch.
The logic here is: in the beginning, after a new release, a few people immediately start using it.
That's why the number of patches in the quarterly patch list is pretty small.
Gradually, the activity of users is growing, and then the number of identified problems/bugs is growing too. Therefore, the number of fixes in the patchset also increases.
After the time the software reaches a state where all the major bugs are fixed and the number of patches in the patchset decreases. Such an inflection point can be considered a stage of maturity of the software product.
The 19c Database Quarterly Bug Fixes:
Oct-20 Jan-21 Apr-21 Jul-21 Oct-21 Jan-22 Apr-22
19.9 19.10 19.11 19.12 19.13 19.14 19.15
Advance Queuing 4 6 11 9 10 12 6
ASM 10 31 22 27 29 16 11
Buffer Cache Management 9 14 20 16 14 5 9
Generic 77 160 215 120 117 66 73
High Availability 32 69 128 64 84 53 67
Diag 1 2 1 2 1 1 2
Global Data Services 1 1 10 0 2
Heterogenous Services 0 3 1 1 0 0 1
JVM 0 0 0 0 0 0 0
Multitenant 6 23 22 8 10 6 8
Net 0 0 4 1 0 0 4
OLAP 0 1 0 1 0 0 0
LOB 1 1 4 1 2 1 0
Security 7 11 15 3 8 10 3
Security Service 2 2 5 4 4 7 1
Sharding 0 1 2 3 10 5 3
TableSpace management 16 31 36 22 12 7 10
Storage Server Service 13 6 5 2 9 3 4
Streams 1 10 4 1 2 1 6
Transaction Mgmt 9 10 20 7 5 9 5
Universal Storage Mgmt 0 1 1 0 0 0 0
Utilities 1 10 10 4 12 4 2
Virtual OS 12 32 36 27 28 15 18
PL/SQL 4 4 14 5 7 3 2
Manageability 1 14 12 7 3 1 5
XML Utilities 1 1 6 6 7 1 1
XML database 3 19 25 17 24 13 4
Miscellaneous 29 47 114 59 86 65 33
SUM: 239 509 734 418 494 304 280
The 19c Grid Infrastructure Quarterly Bug Fixes:
Oct-20 Jan-21 Apr-21 Jul-21 Oct-21 Jan-22 Apr-22
19.9 19.10 19.11 19.12 19.13 19.14 19.15
Portable ClusterWare 124 195 139 132 65 61 82
Universal Storage Mgmt 26 30 48 41 41 43 26
Miscellaneous Issues - - - - 22 28 23
SUM: 150 225 187 173 128 132 131
:)
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