diff --git a/pom.xml b/pom.xml
index 0bd0853..16df048 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,12 +39,6 @@
               </exclusion>
           </exclusions>
       </dependency>
-      <dependency>
-          <groupId>com.zaxxer</groupId>
-          <artifactId>HikariCP</artifactId>
-          <version>3.3.1</version>
-          <scope>compile</scope>
-      </dependency>
       <dependency>
           <groupId>javax.xml.bind</groupId>
           <artifactId>jaxb-api</artifactId>
diff --git a/src/main/java/org/utplsql/cli/LoggerConfiguration.java b/src/main/java/org/utplsql/cli/LoggerConfiguration.java
index 3dcd09b..2a83085 100644
--- a/src/main/java/org/utplsql/cli/LoggerConfiguration.java
+++ b/src/main/java/org/utplsql/cli/LoggerConfiguration.java
@@ -6,7 +6,6 @@
 import ch.qos.logback.classic.encoder.PatternLayoutEncoder;
 import ch.qos.logback.classic.spi.ILoggingEvent;
 import ch.qos.logback.core.ConsoleAppender;
-import com.zaxxer.hikari.HikariDataSource;
 import org.slf4j.LoggerFactory;
 
 public class LoggerConfiguration {
@@ -39,7 +38,6 @@ private static void configureSilent() {
 
     private static void configureInfo() {
         setRootLoggerLevel(Level.INFO);
-        muteHikariLogger();
         setSingleConsoleAppenderWithLayout("%msg%n");
     }
 
@@ -53,10 +51,6 @@ private static void setRootLoggerLevel(Level level) {
         root.setLevel(level);
     }
 
-    private static void muteHikariLogger() {
-        ((Logger) LoggerFactory.getLogger(HikariDataSource.class)).setLevel(Level.OFF);
-    }
-
     private static void setSingleConsoleAppenderWithLayout(String patternLayout) {
         Logger logger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
         LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
diff --git a/src/main/java/org/utplsql/cli/RunAction.java b/src/main/java/org/utplsql/cli/RunAction.java
index de960ed..b9fcef9 100644
--- a/src/main/java/org/utplsql/cli/RunAction.java
+++ b/src/main/java/org/utplsql/cli/RunAction.java
@@ -1,6 +1,5 @@
 package org.utplsql.cli;
 
-import com.zaxxer.hikari.HikariDataSource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.utplsql.api.*;
@@ -59,13 +58,13 @@ public int doRun() throws OracleCreateStatmenetStuckException {
         init();
         outputMainInformation();
 
-        HikariDataSource dataSource = null;
+        DataSource dataSource = null;
         int returnCode = 0;
         try {
 
             final List<Reporter> reporterList;
 
-            dataSource = (HikariDataSource) DataSourceProvider.getDataSource(config.getConnectString(), getReporterManager().getNumberOfReporters() + 2);
+            dataSource = DataSourceProvider.getDataSource(config.getConnectString(), getReporterManager().getNumberOfReporters() + 2);
 
             initDatabase(dataSource);
             reporterList = initReporters(dataSource);
@@ -112,10 +111,6 @@ public int doRun() throws OracleCreateStatmenetStuckException {
         } catch (Throwable e) {
             e.printStackTrace();
             returnCode = Cli.DEFAULT_ERROR_CODE;
-        } finally {
-            if (dataSource != null) {
-                dataSource.close();
-            }
         }
         return returnCode;
     }
diff --git a/src/main/java/org/utplsql/cli/datasource/InitializableOracleDataSource.java b/src/main/java/org/utplsql/cli/datasource/InitializableOracleDataSource.java
new file mode 100644
index 0000000..db32b1a
--- /dev/null
+++ b/src/main/java/org/utplsql/cli/datasource/InitializableOracleDataSource.java
@@ -0,0 +1,32 @@
+package org.utplsql.cli.datasource;
+
+import oracle.jdbc.pool.OracleDataSource;
+
+import java.sql.CallableStatement;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+public class InitializableOracleDataSource extends OracleDataSource {
+
+    private String initSql;
+
+    public InitializableOracleDataSource() throws SQLException {
+    }
+
+    @Override
+    public Connection getConnection() throws SQLException {
+        Connection con = super.getConnection();
+
+        if ( initSql != null && !initSql.isEmpty() ) {
+            try (CallableStatement stmt = con.prepareCall(initSql)) {
+                stmt.execute();
+            }
+        }
+
+        return con;
+    }
+
+    public void setConnectionInitSql( String sql ) {
+        this.initSql = sql;
+    }
+}
diff --git a/src/main/java/org/utplsql/cli/datasource/TestedDataSourceProvider.java b/src/main/java/org/utplsql/cli/datasource/TestedDataSourceProvider.java
index 8c72c87..8ecfeca 100644
--- a/src/main/java/org/utplsql/cli/datasource/TestedDataSourceProvider.java
+++ b/src/main/java/org/utplsql/cli/datasource/TestedDataSourceProvider.java
@@ -1,12 +1,13 @@
 package org.utplsql.cli.datasource;
 
-import com.zaxxer.hikari.HikariDataSource;
+import oracle.jdbc.pool.OracleDataSource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.utplsql.api.EnvironmentVariableUtil;
 import org.utplsql.cli.ConnectionConfig;
 import org.utplsql.cli.exception.DatabaseConnectionFailed;
 
+import javax.sql.DataSource;
 import java.sql.Connection;
 import java.sql.SQLException;
 import java.util.ArrayList;
@@ -35,11 +36,9 @@ public TestedDataSourceProvider(ConnectionConfig config, int maxConnections) {
         possibilities.add(new ThinConnectStringPossibility());
     }
 
-    public HikariDataSource getDataSource() throws SQLException {
+    public DataSource getDataSource() throws SQLException {
 
-        HikariDataSource ds = new HikariDataSource();
-        ds.setAutoCommit(false);
-        ds.setMaximumPoolSize(maxConnections);
+        InitializableOracleDataSource ds = new InitializableOracleDataSource();
 
         setInitSqlFrom_NLS_LANG(ds);
         setThickOrThinJdbcUrl(ds);
@@ -47,15 +46,15 @@ public HikariDataSource getDataSource() throws SQLException {
         return ds;
     }
 
-    private void setThickOrThinJdbcUrl(HikariDataSource ds) throws SQLException {
+    private void setThickOrThinJdbcUrl(OracleDataSource ds) throws SQLException {
         List<String> errors = new ArrayList<>();
         Throwable lastException = null;
 
-        ds.setUsername(config.getUser());
+        ds.setUser(config.getUser());
         ds.setPassword(config.getPassword());
 
         for (ConnectStringPossibility possibility : possibilities) {
-            ds.setJdbcUrl(possibility.getConnectString(config));
+            ds.setURL(possibility.getConnectString(config));
             try (Connection ignored = ds.getConnection()) {
                 logger.info("Use connection string {}", possibility.getMaskedConnectString(config));
                 return;
@@ -69,7 +68,7 @@ private void setThickOrThinJdbcUrl(HikariDataSource ds) throws SQLException {
         throw new DatabaseConnectionFailed(lastException);
     }
 
-    private void setInitSqlFrom_NLS_LANG(HikariDataSource ds) {
+    private void setInitSqlFrom_NLS_LANG(InitializableOracleDataSource ds) {
         String nls_lang = EnvironmentVariableUtil.getEnvValue("NLS_LANG");
 
         if (nls_lang != null) {