3792800 - SAP HANA: Missing HDB main executable folder causes instance startup failure

The HDB main executable folder is missing from the HANA instance's exe directory. Only the symlink hdb and the plugins directory are present, but the target directory the symlink points to does not exist:

HANAHOST:/hana/shared/H78/exe/linuxx86_64 # ll
total 0
lrwxrwxrwx 1 h78adm sapsys  67 Jul 22 07:52 hdb -> HDB_2.00.083.00.1740646891_cb354e5c10ab5b780c40441638dc36604b7e9205
drwxr-xr-x 6 h78adm sapsys 296 Jul 22 07:54 plugins

The HDB_<version> directory referenced by the hdb symlink is absent. As a result, any attempt to start the HANA instance or execute HDB binaries fails.

SAP HANA Database 2.0

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