diff --git a/airbyte-integrations/connectors/source-db2/src/test-integration/java/io/airbyte/integrations/io/airbyte/integration_tests/sources/Db2SourceDatatypeTest.java b/airbyte-integrations/connectors/source-db2/src/test-integration/java/io/airbyte/integrations/io/airbyte/integration_tests/sources/Db2SourceDatatypeTest.java
index 5ea0a2dc6b9f..eb47985e15c1 100644
--- a/airbyte-integrations/connectors/source-db2/src/test-integration/java/io/airbyte/integrations/io/airbyte/integration_tests/sources/Db2SourceDatatypeTest.java
+++ b/airbyte-integrations/connectors/source-db2/src/test-integration/java/io/airbyte/integrations/io/airbyte/integration_tests/sources/Db2SourceDatatypeTest.java
@@ -16,6 +16,7 @@
 import io.airbyte.integrations.standardtest.source.TestDataHolder;
 import io.airbyte.integrations.standardtest.source.TestDestinationEnv;
 import io.airbyte.protocol.models.JsonSchemaType;
+import java.math.BigDecimal;
 import org.jooq.DSLContext;
 import org.jooq.SQLDialect;
 import org.testcontainers.containers.Db2Container;
@@ -126,7 +127,7 @@ protected void initTests() {
             .airbyteType(JsonSchemaType.NUMBER)
             .fullSourceDataType("DECIMAL(31, 0)")
             .addInsertValues("null", "1", "DECIMAL((-1 + 10E+29), 31, 0)", "DECIMAL((1 - 10E+29), 31, 0)")
-            .addExpectedValues(null, "1", "1.0E30", "-1.0E30")
+            .addExpectedValues(null, "1", "%.0f".formatted(Double.valueOf("1.0E30")), "%.0f".formatted(Double.valueOf("-1.0E30")))
             .build());
     addDataTypeTestData(
         TestDataHolder.builder()
diff --git a/airbyte-integrations/connectors/source-oracle/src/test-integration/java/io/airbyte/integrations/source/oracle/OracleSourceDatatypeTest.java b/airbyte-integrations/connectors/source-oracle/src/test-integration/java/io/airbyte/integrations/source/oracle/OracleSourceDatatypeTest.java
index 7d8541597a85..c80b0998f91d 100644
--- a/airbyte-integrations/connectors/source-oracle/src/test-integration/java/io/airbyte/integrations/source/oracle/OracleSourceDatatypeTest.java
+++ b/airbyte-integrations/connectors/source-oracle/src/test-integration/java/io/airbyte/integrations/source/oracle/OracleSourceDatatypeTest.java
@@ -146,7 +146,10 @@ protected void initTests() {
             .sourceType("NUMBER")
             .airbyteType(JsonSchemaType.NUMBER)
             .addInsertValues("null", "1", "123.45", "power(10, -130)", "9.99999999999999999999 * power(10, 125)")
-            .addExpectedValues(null, "1", "123.45", String.valueOf(Math.pow(10, -130)), String.valueOf(9.99999999999999999999 * Math.pow(10, 125)))
+            /* The 999990000… below is the plain string representation of 9.999 * power(10, 125) */
+            /* because normalization expects a plain integer strings whereas `Math.pow(10, 125)` returns a scientific notation */
+            .addExpectedValues(null, "1", "123.45", String.valueOf(Math.pow(10, -130)),
+                "999999999999999999999000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
             .build());
 
     addDataTypeTestData(
@@ -155,7 +158,7 @@ protected void initTests() {
             .airbyteType(JsonSchemaType.NUMBER)
             .fullSourceDataType("NUMBER(6,-2)")
             .addInsertValues("123.89")
-            .addExpectedValues("100.0")
+            .addExpectedValues("100")
             .build());
 
     addDataTypeTestData(
@@ -164,7 +167,7 @@ protected void initTests() {
             .airbyteType(JsonSchemaType.NUMBER)
             .fullSourceDataType("FLOAT(5)")
             .addInsertValues("1.34", "126.45")
-            .addExpectedValues("1.3", "130.0")
+            .addExpectedValues("1.3", "130")
             .build());
 
     addDataTypeTestData(