fix: implements system parameter suggestions from ExL SC 06626566

tasks/oracle/configure_system_limits.yml

 ---
-# all settings as suggested in SupportCase 00909505 "JDBCConnectionException:
-# Cannot open connection [Rosetta 6.3.0.0]"
+# all settings as suggested in 
+# - SupportCase 00909505 "JDBCConnectionException:
+#   Cannot open connection [Rosetta 6.3.0.0]"
+# - SupportCase 06626566 "Revalidation Process kills
+#   performance, ingests and Oracle [Rosetta 7.3.0.2]"
 
 - name: set PAM Limits (man 5 limits.conf)
   ansible.builtin.blockinfile:
@@ -19,10 +22,10 @@
       @exlibris hard memlock 4194304
       @dba soft nofile 65000
       @dba hard nofile 65000
-      @dba soft nproc 16384
-      @dba hard nproc 16384
-      @dba soft memlock 33554432
-      @dba hard memlock 33554432
+      @dba soft nproc 32768
+      @dba hard nproc 32768
+      @dba soft memlock 34603008
+      @dba hard memlock 34603008
   notify: activate kernel parameter changes
 
 - name: set Kernel parameters (man 5 sysctl.conf)
@@ -43,6 +46,9 @@
       fs.aio-max-nr = 3145728
       fs.file-max = 6815744
       # Use 65GB, about 95% of total RAM 68G
-      kernel.shmmax = 69793218560
-      kernel.shmall = 17039360
+      #kernel.shmmax = 69793218560
+      #kernel.shmall = 17039360
+      # use 61GB, about 89,7% of total RAM 68G as of SC 06626566
+      kernel.shmmax=65498251264
+      kernel.shmall=15990784
   notify: activate kernel parameter changes