Connect to database to verify if it is running

Try to connect to the OCI host via sqlplus to ensure that the connection is already running. Required by the new OCI configuration on CI.

autotest.sh

@@ -203,8 +203,14 @@ function execute_tests {
 
 		echo "Waiting for Oracle initialization ... "
 
-		# grep exits on the first match and then the script continues - times out after 2 minutes
-		timeout 240 docker logs -f "$DOCKER_CONTAINER_ID" 2>&1 | grep -q "Grant succeeded."
+		# Try to connect to the OCI host via sqlplus to ensure that the connection is already running
+      		for i in {1..48}
+                do
+                        if sqlplus "system/oracle@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host=$DATABASEHOST)(Port=1521))(CONNECT_DATA=(SID=XE)))" < /dev/null | grep 'Connected to'; then
+                                break;
+                        fi
+                        sleep 5
+                done
 
 		DATABASEUSER=autotest
 		DATABASENAME='XE'