Re enable no leak oracle tests (#1484)

* Revert "Disable OracleConnectionTest#testConnectNoLeak tests (#1482)"

This reverts commit c30df2f.

* Reduce number of connections made in testConnectNoLeak tests

We only need a few of them to verify whether there is a leak.
And we avoid putting to much pressure on the Oracle test DB.

Signed-off-by: Thomas Segismont <tsegismont@gmail.com>

---------

Signed-off-by: Thomas Segismont <tsegismont@gmail.com>

vertx-oracle-client/src/test/java/io/vertx/oracleclient/test/tck/OracleConnectionTest.java

@@ -16,8 +16,6 @@
 import io.vertx.sqlclient.spi.DatabaseMetadata;
 import io.vertx.sqlclient.tck.ConnectionTestBase;
 import org.junit.ClassRule;
-import org.junit.Ignore;
-import org.junit.Test;
 import org.junit.runner.RunWith;
 
 @RunWith(VertxUnitRunner.class)
@@ -43,24 +41,4 @@ protected void validateDatabaseMetaData(TestContext ctx, DatabaseMetadata md) {
     ctx.assertTrue(md.fullVersion().contains("Oracle"));
     ctx.assertTrue(md.productName().contains("Oracle"));
   }
-
-  @Test
-  @Ignore
-  @Override
-  public void testConnectNoLeak(TestContext ctx) throws Exception {
-    // Disabled for Oracle because we frequently get ORA-12516 Cannot connect to database
-    // https://docs.oracle.com/en/error-help/db/ora-12516/?r=23ai
-    // Probable cause is that the service handler gets in a blocked state and is not accepting new connections
-    super.testConnectNoLeak(ctx);
-  }
-
-  @Test
-  @Ignore
-  @Override
-  public void testConnectNoLeakInVerticle(TestContext ctx) throws Exception {
-    // Disabled for Oracle because we frequently get ORA-12516 Cannot connect to database
-    // https://docs.oracle.com/en/error-help/db/ora-12516/?r=23ai
-    // Probable cause is that the service handler gets in a blocked state and is not accepting new connections
-    super.testConnectNoLeakInVerticle(ctx);
-  }
 }

vertx-sql-client/src/test/java/io/vertx/sqlclient/tck/ConnectionTestBase.java

@@ -58,8 +58,8 @@ public void testConnect(TestContext ctx) {
   public void testConnectNoLeak(TestContext ctx) throws Exception {
     Set<SqlConnectionBase<?>> connections = Collections.synchronizedSet(Collections.newSetFromMap(new WeakHashMap<>()));
     Set<ConnectionFactory> factories = Collections.synchronizedSet(Collections.newSetFromMap(new WeakHashMap<>()));
-    Async async = ctx.async(100);
-    for (int i = 0; i < 100; i++) {
+    Async async = ctx.async(10);
+    for (int i = 0; i < 10; i++) {
       connect(ctx.asyncAssertSuccess(conn -> {
         SqlConnectionBase<?> base = (SqlConnectionBase<?>) conn;
         connections.add(base);
@@ -80,11 +80,11 @@ public void testConnectNoLeak(TestContext ctx) throws Exception {
   public void testConnectNoLeakInVerticle(TestContext ctx) throws Exception {
     Set<SqlConnectionBase<?>> connections = Collections.synchronizedSet(Collections.newSetFromMap(new WeakHashMap<>()));
     Set<ConnectionFactory> factories = Collections.synchronizedSet(Collections.newSetFromMap(new WeakHashMap<>()));
-    Async async = ctx.async(100);
+    Async async = ctx.async(10);
     vertx.deployVerticle(new AbstractVerticle() {
       @Override
       public void start() throws Exception {
-        for (int i = 0; i < 100; i++) {
+        for (int i = 0; i < 10; i++) {
           connect(ctx.asyncAssertSuccess(conn -> {
             SqlConnectionBase<?> base = (SqlConnectionBase<?>) conn;
             connections.add(base);