diff --git a/constants/constants.js b/constants/constants.js
index b489e24..c1d0a82 100644
--- a/constants/constants.js
+++ b/constants/constants.js
@@ -13,8 +13,6 @@ const TABLE_TYPE = {
 
 const INLINE_COMMENT = '--';
 
-const PERSENT = '__PERCENT__';
-
 const CONSTRAINT_POSTFIX = {
 	primaryKey: 'pk',
 	foreignKey: 'fk',
@@ -28,6 +26,5 @@ module.exports = {
 	ERROR_MESSAGE,
 	TABLE_TYPE,
 	INLINE_COMMENT,
-	PERSENT,
 	CONSTRAINT_POSTFIX,
 };
diff --git a/shared/Db2Client/build.sh b/shared/Db2Client/build.sh
old mode 100644
new mode 100755
diff --git a/shared/addons/Db2Client.jar b/shared/addons/Db2Client.jar
index 364efc0..1ce2335 100644
Binary files a/shared/addons/Db2Client.jar and b/shared/addons/Db2Client.jar differ
diff --git a/shared/helpers/queryHelper.js b/shared/helpers/queryHelper.js
index 3897092..a65b788 100644
--- a/shared/helpers/queryHelper.js
+++ b/shared/helpers/queryHelper.js
@@ -1,4 +1,4 @@
-const { TABLE_TYPE, PERSENT } = require('../../constants/constants');
+const { TABLE_TYPE } = require('../../constants/constants');
 
 /**
  * @param {{ query: string }}
@@ -11,18 +11,14 @@ const cleanUpQuery = ({ query = '' }) => query.replaceAll(/\s+/g, ' ');
  * @returns {string}
  */
 const getNonSystemSchemaWhereClause = ({ query, schemaNameKeyword }) => {
-	// On Windows (cmd.exe), environment variables can be referenced using syntax like %PATH%.
-	// When a command contains such patterns, cmd.exe automatically replaces them with the corresponding environment variable values.
-	// To prevent this automatic substitution, a placeholder string (PERSENT) is used here instead,
-	// which will later be replaced with the % symbol inside the Db2Client Java client.
 	const whereClause = `
-	  WHERE ${schemaNameKeyword} NOT LIKE 'SYS${PERSENT}'
-	  AND ${schemaNameKeyword} NOT LIKE '${PERSENT}SYSCAT${PERSENT}'
-	  AND ${schemaNameKeyword} NOT LIKE '${PERSENT}SYSIBM${PERSENT}'
-	  AND ${schemaNameKeyword} NOT LIKE '${PERSENT}SYSSTAT${PERSENT}'
-	  AND ${schemaNameKeyword} NOT LIKE '${PERSENT}SYSTOOLS${PERSENT}'
-	  AND ${schemaNameKeyword} NOT LIKE '${PERSENT}NULLID${PERSENT}'
-	  AND ${schemaNameKeyword} NOT LIKE '${PERSENT}SQLJ${PERSENT}';`;
+	  WHERE ${schemaNameKeyword} NOT LIKE 'SYS%'
+	  AND ${schemaNameKeyword} NOT LIKE '%SYSCAT%'
+	  AND ${schemaNameKeyword} NOT LIKE '%SYSIBM%'
+	  AND ${schemaNameKeyword} NOT LIKE '%SYSSTAT%'
+	  AND ${schemaNameKeyword} NOT LIKE '%SYSTOOLS%'
+	  AND ${schemaNameKeyword} NOT LIKE '%NULLID%'
+	  AND ${schemaNameKeyword} NOT LIKE '%SQLJ%';`;
 
 	const clause = query.includes('WHERE') ? whereClause.replace('WHERE', 'AND') : whereClause;