Applying patches 21255373 and 28553832 to GI (has) results in start failure

Hi all,

I'm in the process of upgrading a GI 11.2.0.4 (standalone/has) instance, running on Oracle Linux 7.9, to version 19c which requires the 21255373 and 28553832 patches.

Patch 21255373 applies without any problem, but 28553832 fails.

I'm applying the patches as follows:

As the root user I then run opatch (11.2.0.3.34):

export ORACLE_HOME=/u01/app/oracle/product/11.2.0/grid
export PATH=$ORACLE_HOME/OPatch:$PATH
opatch auto ~/patches/p21255373 -oh $ORACLE_HOME # applies without problems
opatch auto ~/patches/p28553832 -oh $ORACLE_HOME

Applying the last patch results in GI failing to start:

Starting CRS...
CRS-4124: Oracle High Availability Services startup failed.
CRS-4000: Command Start failed, or completed with errors.
Timed out waiting for ohasd to start.