diff --git a/cmake/linux/FindLibXml2.cmake b/cmake/linux/FindLibXml2.cmake
index fce4c01a..916b1c20 100644
--- a/cmake/linux/FindLibXml2.cmake
+++ b/cmake/linux/FindLibXml2.cmake
@@ -1,7 +1,4 @@
 
-find_path(LIBXML2_ROOT
-    NAMES include/zlib.h
-)
 
 find_path(LIBXML2_INCLUDE_DIR libxml/xpath.h
     HINTS
diff --git a/cmake/linux/FindOracle.cmake b/cmake/linux/FindOracle.cmake
index 30fec0ae..a4d14c4b 100644
--- a/cmake/linux/FindOracle.cmake
+++ b/cmake/linux/FindOracle.cmake
@@ -26,56 +26,12 @@
 # If ORACLE_HOME not defined, assume Oracle libraries not available
 if(DEFINED ENV{ORACLE_HOME})
 
-
   set(ORACLE_HOME $ENV{ORACLE_HOME})
-  message("ORACLE_HOME=${ORACLE_HOME}")
-
 
   find_path(ORACLE_INCLUDE_DIR
     NAMES oci.h
     PATHS
-    /usr/include/oracle/12.1/client64
-    /usr/include/oracle/12.1/client
-    /usr/lib/oracle/12.1/client64
-    /usr/share/oracle/12.1/client64
-    /usr/lib/oracle/12.1/client
-    /usr/share/oracle/12.1/client
-    /usr/include/oracle/10.2.0.4/client64
-    /usr/include/oracle/10.2.0.4/client
-    /usr/lib/oracle/10.2.0.4/client64
-    /usr/share/oracle/10.2.0.4/client64
-    /usr/lib/oracle/10.2.0.4/client
-    /usr/share/oracle/10.2.0.4/client
-    /usr/include/oracle/12.2/client64
-    /usr/include/oracle/12.2/client
-    /usr/lib/oracle/12.2/client64
-    /usr/share/oracle/12.2/client64
-    /usr/lib/oracle/12.2/client
-    /usr/share/oracle/12.2/client
-    /usr/include/oracle/18.3/client64
     /usr/include/oracle/18.3/client
-    /usr/lib/oracle/18.3/client64
-    /usr/share/oracle/18.3/client64
-    /usr/lib/oracle/18.3/client
-    /usr/share/oracle/18.3/client
-    /usr/include/oracle/19.6/client64
-    /usr/include/oracle/19.6/client
-    /usr/lib/oracle/19.6/client64
-    /usr/share/oracle/19.6/client64
-    /usr/lib/oracle/19.6/client
-    /usr/share/oracle/19.6/client
-    /usr/include/oracle/19.12/client64
-    /usr/include/oracle/19.12/client
-    /usr/lib/oracle/19.12/client64
-    /usr/share/oracle/19.12/client64
-    /usr/lib/oracle/19.12/client
-    /usr/share/oracle/19.12/client
-    /usr/include/oracle/21/client
-    /usr/lib/oracle/21/client
-    /usr/share/oracle/21/client    
-    /usr/include/oracle/21/client64
-    /usr/lib/oracle/21/client64
-    /usr/share/oracle/21/client64
     ${ORACLE_HOME}/rdbms/public
     ${ORACLE_HOME}/include
     ${ORACLE_HOME}/sdk/include  # Oracle SDK
@@ -83,8 +39,8 @@ if(DEFINED ENV{ORACLE_HOME})
 
 
   set(ORACLE_OCI_NAMES clntsh libclntsh oci)
-  set(ORACLE_NNZ_NAMES nnz10 libnnz10 nnz11 libnnz11 nnz12 libnnz12 nnz18 libnnz18 nnz19 libnnz19 nnz21 libnnz21 ociw32)
-  set(ORACLE_OCCI_NAMES libocci occi oraocci10 oraocci11 oraocci12 libocci.so.19.1 oraocci19)
+  set(ORACLE_NNZ_NAMES nnz18 libnnz18 ociw32)
+  set(ORACLE_OCCI_NAMES libocci occi)
 
 
   set(ORACLE_LIB_DIR 
diff --git a/cmake/linux/FindPCRE.cmake b/cmake/linux/FindPCRE.cmake
index eb3c2da7..6129b0d4 100644
--- a/cmake/linux/FindPCRE.cmake
+++ b/cmake/linux/FindPCRE.cmake
@@ -1,8 +1,3 @@
-
-find_path(PCRE_ROOT
-    NAMES include/pcre.h
-)
-
 find_path(PCRE_INCLUDE_DIR pcre.h
     HINTS
         $ENV{PCRE_ROOT}