致命错误：Doctrine \ ORM \ UnitOfWork.php中超出了最大执行时间

Question

当我处理一批数据库操作时，我收到错误：

致命错误：第661行\ vendor \ doctrine \ orm \ lib \ Doctrine \ ORM \ UnitOfWork.php超出最长执行时间120秒

它怎么样？每次我创建或更新实体时，我都会坚持并刷新。 如何检查执行的原因是什么，为什么一些批处理实体需要120秒才能执行并停止脚本？

$timezone = 'Europe/London'; 
$currency = 'EUR'; 

//get all apparments and set the price for them for different dates 
$entAll = $this->em
    ->getRepository( 'BookBundle\Entity\App' )
    ->findBy( [],['aliasApp' => 'ASC'] );

if( $entAll!==null ) {
    foreach ( $entAll as $ent ) {

        $aliasApp = $ent->getAliasApp(); 
        for ( $m=1; $m<=12; $m++ ) {
            for ( $d=1; $d<=31; $d++ ) {
                for ( $y=2019; $y<=2020; $y++ ) {

        $isvalid = checkdate($m,$d,$y);  //m, d, y
        if($isvalid) {

            $aliasAppPr = $aliasApp.'_'.$d.'_'.$m.'_'.$y;

            $curD = new \DateTime( $y.'-'.$m.'-'.$d, new \DateTimeZone($timezone) );
            $curts = $curD->getTimestamp();

            $acp = new AppCalPr(); 

            $acp->setAliasAppPr( $aliasAppPr);
            $acp->setDateAppPrStr( $d.'-'.$m.'-'.$y.'  '.$timezone ); 
            $acp->setDateAppPrInt( $curts);

            if( $m>4 || $m<11 ) { $acp->setIsAppPrActive(1); }
            else { $acp->setIsAppPrActive(0); }

            if( $d<10 || $d>20 ) {  $acp->setIsAppPrBooked(1); }
            else {   $acp->setIsAppPrBooked(0); }

            $price = rand(30,300); 
            $acp->setPriceAppPr($price); 
            $acp->setCurrAppPr($currency);
            $this->em->persist($acp);
            $this->em->flush();

            //single day = single price setting, single booking, single appartment
            print_r( '<br><br> 88 AppCalPrFix,  aliasAppPr=' .$aliasAppPr );
            $acbEnt = $this->em
                ->getRepository( 'BookBundle\Entity\AppCalBookRel' )
                //->findBy( [],['aliasApp' => 'ASC'] );
                ->findOneByAliasAppPrACB( $aliasAppPr );
            if ( $acbEnt== null) {
                $acbEnt =new AppCalBookRel();
                $acbEnt->setAppcalOTO($acp); 
                $acbEnt->setAliasAppPrACB($aliasAppPr); 
                $this->em->persist($acbEnt);
                $this->em->flush();
            }

        } //if($isvalid) {

                } // for ( $y=2019; $y<2025; $y++ ){
            } // for ( $d=1; $d<=31; $d++ ) {
        } // for ( $m=4; $m<10; $m++ ) {
    }// foreach ( $entAll as $ent ) {
} // if( $entAll!==null ) {