Question

我目前正在尝试进行批量上传操作，我需要解析excel并将详细信息更新到数据库中。问题是需要将数据存储到多个表中并保持关系。问题不在于我有大约50-100条记录需要更新，但是当我有大约50000条记录要更新时会受到很大影响。上传需要很长时间，有时浏览器会放弃等待响应到达。请在下面找到代码和映射文件。请让我知道我可以做些什么来提高性能并更快地完成处理。

注意：级联都是必需的。

***.hbm.xml
    <?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Mar 19, 2012 9:24:47 AM by Hibernate Tools 3.3.0.GA -->
<hibernate-mapping>
    <class name="com.****.****.hibernate.****" table="V_ACCOUNT_DIM">
        <id name="acctDimIdN" type="long">
            <column name="ACCT_DIM_ID_N" precision="10" scale="0" />
             <generator class="sequence">
                <param name="sequence">ACCOUNT_DIM_SEQ</param>
            </generator>
        </id>
        <property name="gdwIdN" type="long">
            <column name="GDW_ID_N" precision="38" scale="0" not-null="true" />
        </property>
        <property name="pycisInstnIdN" type="java.lang.Long">
            <column name="PYCIS_INSTN_ID_N" precision="10" scale="0" />
        </property>
        <property name="acctNotesC" type="string">
            <column name="ACCT_NOTES_C" length="4000" />
        </property>
        <property name="trdSysShrtNmC" type="string">
            <column name="TRD_SYS_SHRT_NM_C" length="100" />
        </property>
        <property name="reimbAuthorizeD" type="date">
            <column name="REIMB_AUTHORIZE_D" length="7" />
        </property>
        <property name="reimbInitD" type="date">
            <column name="REIMB_INIT_D" length="7" />
        </property>
        <property name="reimbEffD" type="date">
            <column name="REIMB_EFF_D" length="7" />
        </property>
        <property name="acctGainLossAmtN" type="java.lang.Double">
            <column name="ACCT_GAIN_LOSS_AMT_N" precision="15" />
        </property>
        <property name="buySellIndC" type="string">
            <column name="BUY_SELL_IND_C" length="10" />
        </property>
        <property name="navImpcN" type="java.lang.Double">
            <column name="NAV_IMPC_N" precision="15" />
        </property>
        <property name="delIndC" type="string">
            <column name="DEL_IND_C" length="1" not-null="true" />
        </property>
        <property name="updUsrC" type="string">
            <column name="UPD_USR_C" length="12" />
        </property>
        <property name="updTsD" type="date">
            <column name="UPD_TS_D" length="7" />
        </property>
        <property name="insUsrC" type="string">
            <column name="INS_USR_C" length="12" not-null="true" />
        </property>
        <property name="insTsD" type="date">
            <column name="INS_TS_D" length="7" not-null="true" />
        </property>
        <set name="incidentAcctSecFacts" table="V_INCIDENT_ACCT_SEC_FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="ACCT_DIM_ID_N" precision="22" scale="0" not-null="true" />
            </key>
            <one-to-many class="com.****.***.***.I***Fact" />
        </set>
        <set name="incidentAcctFacts" table="V_INCIDENT_ACCT_FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="ACCT_DIM_ID_N" precision="22" scale="0" not-null="true" />
            </key>
            <one-to-many class="com.****.***.***.I***Fact" />
        </set>
        <set name="accountAttachmentFacts" table="V_ACCOUNT_ATTACHMENT_FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="ACCT_DIM_ID_N" precision="22" scale="0" not-null="true" />
            </key>
            <one-to-many class="com.****.***.***.A****Fact" />
        </set>
    </class>
</hibernate-mapping>

I****Dim.hbm.xml

    <?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Mar 19, 2012 9:24:47 AM by Hibernate Tools 3.3.0.GA -->
<hibernate-mapping>
    <class name="com.****.***.***.I****Dim" table="V_****_DIM">
        <id name="incidentDimIdN" type="long">
            <column name="INCIDENT_DIM_ID_N" precision="10" scale="0" />
            <generator class="sequence">
                <param name="sequence">INCIDENT_DIM_SEQ</param>
            </generator>
        </id>
        <property name="errMemoIdC" type="string">
            <column name="ERR_MEMO_ID_C" length="60" not-null="true" unique="true" />
        </property>
        <property name="errMemoD" type="date">
            <column name="ERR_MEMO_D" length="7" />
        </property>
        <property name="idD" type="date">
            <column name="ID_D" length="7" not-null="true" />
        </property>
        <property name="incidentD" type="date">
            <column name="INCIDENT_D" length="7" not-null="true" />
        </property>
        <property name="ntfcD" type="date">
            <column name="NTFC_D" length="7" not-null="true" />
        </property>
        <property name="totGainLossN" type="java.lang.Double">
            <column name="TOT_GAIN_LOSS_N" precision="18"  scale="2"/>
        </property>
        <property name="ovrdAttachedAcctC" type="string">
            <column name="OVRD_ATTACHED_ACCT_C" length="1" />
        </property>
        <property name="gainLossCalcMthdC" type="string">
            <column name="GAIN_LOSS_CALC_MTHD_C" length="4000" />
        </property>
        <property name="deemedAnErrC" type="string">
            <column name="DEEMED_AN_ERR_C" length="1" not-null="true" />
        </property>
        <property name="errRatifiedC" type="string">
            <column name="ERR_RATIFIED_C" length="1" not-null="true" />
        </property>
        <property name="errAcctUsedC" type="string">
            <column name="ERR_ACCT_USED_C" length="1" not-null="true" />
        </property>
        <property name="aprvPrcsC" type="string">
            <column name="APRV_PRCS_C" length="4000" />
        </property>
        <property name="incidentShrtDescC" type="string">
            <column name="INCIDENT_SHRT_DESC_C" length="4000" />
        </property>
        <property name="incidentSumC" type="string">
            <column name="INCIDENT_SUM_C" length="4000" />
        </property>
        <property name="incidentNotesC" type="string">
            <column name="INCIDENT_NOTES_C" length="4000" />
        </property>
        <property name="delIndC" type="string">
            <column name="DEL_IND_C" length="1" not-null="true" />
        </property>
        <property name="updUsrC" type="string">
            <column name="UPD_USR_C" length="12" />
        </property>
        <property name="updTsD" type="date">
            <column name="UPD_TS_D" length="7" />
        </property>
        <property name="insUsrC" type="string">
            <column name="INS_USR_C" length="12" not-null="true" />
        </property>
        <property name="insTsD" type="date">
            <column name="INS_TS_D" length="7" />
        </property>
        <set name="incidentAttachmentFacts" table="V_****FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="INCIDENT_DIM_ID_N" precision="10" scale="0" not-null="true" />
            </key>
            <one-to-many class="com.****.***.***.I***Fact" />
        </set>
        <set name="incidentActionItemFacts" table="V_****_FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="INCIDENT_DIM_ID_N" precision="22" scale="0" />
            </key>
            <one-to-many class="com.****.***.***.I****Fact" />
        </set>
        <set name="incidentAcctSecFacts" table="V_****FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="INCIDENT_DIM_ID_N" precision="22" scale="0" not-null="true" />
            </key>
            <one-to-many class="com.***.***.****.IncidentAcctSecFact" />
        </set>
        <set name="irgMemberAssignmentFacts" table="V_IRG_MEMBER_ASSIGNMENT_FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="INCIDENT_DIM_ID_N" precision="22" scale="0" />
            </key>
            <one-to-many class="com.***.***.****.IrgMemberAssignmentFact" />
        </set>
        <set name="incidentAcctFacts" table="V_INCIDENT_ACCT_FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="INCIDENT_DIM_ID_N" precision="22" scale="0" not-null="true" />
            </key>
            <one-to-many class="com.***.***.****.IncidentAcctFact" />
        </set>
        <set name="acctAttachmentFacts" table="V_ACCOUNT_ATTACHMENT_FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="INCIDENT_DIM_ID_N" precision="22" scale="0" not-null="true" />
            </key>
            <one-to-many class="com.***.***.****.AccountAttachmentFact" />
        </set>
    </class>
</hibernate-mapping>

CerSecurityDim.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Mar 19, 2012 9:24:47 AM by Hibernate Tools 3.3.0.GA -->
<hibernate-mapping>
    <class name="com.***.***.****.CerSecurityDim" table="V_CER_SECURITY_DIM">
        <id name="cerSecuDimIdN" type="long">
            <column name="CER_SECU_DIM_ID_N" precision="22" scale="0" />
             <generator class="sequence">
                <param name="sequence">CER_SECURITY_DIM_SEQ</param>
            </generator>
        </id>
        <property name="fmrCusipC" type="string">
            <column name="FMR_CUSIP_C" length="30" not-null="true" />
        </property>
        <property name="tckrC" type="string">
            <column name="TCKR_C" length="30" />
        </property>
        <property name="secuNmC" type="string">
            <column name="SECU_NM_C" not-null="true" />
        </property>
        <property name="numOfShrTrdN" type="java.lang.Long">
            <column name="NUM_OF_SHR_TRD_N" precision="10" scale="0" />
        </property>
        <property name="secuGainLossN" type="java.lang.Double">
            <column name="SECU_GAIN_LOSS_N" precision="15" />
        </property>
        <property name="buySellIndC" type="string">
            <column name="BUY_SELL_IND_C" length="10" />
        </property>
        <property name="delIndC" type="string">
            <column name="DEL_IND_C" length="1" not-null="true" />
        </property>
        <property name="updUsrC" type="string">
            <column name="UPD_USR_C" length="12" />
        </property>
        <property name="updTsD" type="date">
            <column name="UPD_TS_D" length="7" />
        </property>
        <property name="insUsrC" type="string">
            <column name="INS_USR_C" length="12" not-null="true" />
        </property>
        <property name="insTsD" type="date">
            <column name="INS_TS_D" length="7" not-null="true" />
        </property>
        <set name="incidentAcctSecFacts" table="V_INCIDENT_ACCT_SEC_FACT" inverse="true" lazy="true" fetch="select" cascade="all-delete-orphan"  >
            <key>
                <column name="SECU_DIM_ID_N" precision="22" scale="0" not-null="true" />
            </key>
            <one-to-many class="com.***.***.****.IncidentAcctSecFact" />
        </set>
    </class>
</hibernate-mapping>


IncidentAcctFact.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Mar 19, 2012 9:24:47 AM by Hibernate Tools 3.3.0.GA -->
<hibernate-mapping>
    <class name="com.***.***.****.IncidentAcctFact" table="V_INCIDENT_ACCT_FACT">
        <id name="incidentAcctFactIdN" type="long">
            <column name="INCIDENT_ACCT_FACT_ID_N" precision="22" scale="0" />
            <generator class="sequence">
                <param name="sequence">INCIDENT_ACCT_FACT_SEQ</param>
            </generator>
        </id>
        <many-to-one name="accountDim" class="com.***.***.****.AccountDim" fetch="select">
            <column name="ACCT_DIM_ID_N" precision="22" scale="0" not-null="true" />
        </many-to-one>
        <many-to-one name="incidentDim" class="com.***.***.****.IncidentDim" fetch="select">
            <column name="INCIDENT_DIM_ID_N" precision="22" scale="0" not-null="true" />
        </many-to-one>
       <!--  <many-to-one name="attachmentTypeDim" class="com.***.***.****.AttachmentTypeDim" fetch="select">
            <column name="ATTACHMENT_TYPE_DIM_ID_N" precision="22" scale="0" not-null="false" />
        </many-to-one> -->
        <property name="relEffFromD" type="date">
            <column name="REL_EFF_FROM_D" length="7" />
        </property>
        <property name="relEffThruD" type="date">
            <column name="REL_EFF_THRU_D" length="7" />
        </property>
        <property name="ltstRelIndC" type="string">
            <column name="LTST_REL_IND_C" length="1" />
        </property>
        <property name="delIndC" type="string">
            <column name="DEL_IND_C" length="1" not-null="true" />
        </property>
        <property name="updUsrC" type="string">
            <column name="UPD_USR_C" length="12" />
        </property>
        <property name="updTsD" type="date">
            <column name="UPD_TS_D" length="7" />
        </property>
        <property name="insUsrC" type="string">
            <column name="INS_USR_C" length="12" />
        </property>
        <property name="insTsD" type="date">
            <column name="INS_TS_D" length="7" />
        </property>
    </class>
</hibernate-mapping>


IncidentAcctSecFact.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Mar 19, 2012 9:24:47 AM by Hibernate Tools 3.3.0.GA -->
<hibernate-mapping>
    <class name="com.***.***.****.IncidentAcctSecFact" table="V_INCIDENT_ACCT_SEC_FACT">
        <id name="incidentAcctSecIdN" type="long">
            <column name="INCIDENT_ACCT_SEC_ID_N" precision="22" scale="0" />
            <generator class="sequence">
                <param name="sequence">INCIDENT_ACCT_SEC_FACT_SEQ</param>
            </generator>
        </id>
        <many-to-one name="accountDim" class="com.***.***.****.AccountDim" fetch="select">
        <column name="ACCT_DIM_ID_N" precision="22" scale="0" not-null="true" />
        </many-to-one>
        <many-to-one name="cerSecurityDim" class="com.***.***.****.CerSecurityDim" fetch="select">
            <column name="SECU_DIM_ID_N" precision="22" scale="0" not-null="true" />
        </many-to-one>
        <many-to-one name="incidentDim" class="com.***.***.****.IncidentDim" fetch="select">
            <column name="INCIDENT_DIM_ID_N" precision="22" scale="0" not-null="true" />
        </many-to-one>
         <property name="relEffFromD" type="date">
             <column name="REL_EFF_FROM_D" length="7" />
         </property>
         <property name="relEffThruD" type="date">
             <column name="REL_EFF_THRU_D" length="7" />
         </property>
         <property name="ltstRelIndC" type="string">
             <column name="LTST_REL_IND_C" length="1" />
         </property>
         <property name="delIndC" type="string">
             <column name="DEL_IND_C" length="1" />
         </property>
         <property name="updUsrC" type="string">
             <column name="UPD_USR_C" length="12" />
         </property>
         <property name="updTsD" type="date">
             <column name="UPD_TS_D" length="7" />
         </property>
         <property name="insUsrC" type="string">
             <column name="INS_USR_C" length="12" />
         </property>
         <property name="insTsD" type="date">
             <column name="INS_TS_D" length="7" />
         </property>
    </class>
</hibernate-mapping>


The method where the actual processing is as follows.

   public boolean retrieveDataAndParseFile(IncidentDetailsForm incidentDetailsForm,  BaseViewBean baseViewBean$Session, 
                                                ActionMessages errors) throws Exception {
        boolean savedStatus = false;    
        boolean deletedstatus = false;

        /*List<AccountDim> accountsList = new ArrayList<AccountDim>();
        List<CerSecurityDim> cerSecuList = new ArrayList<CerSecurityDim>();
        List<IncidentAcctSecFact> inciAcctSecFactList = new ArrayList<IncidentAcctSecFact>();
        List<IncidentAcctFact> inciAcctFactList = new ArrayList<IncidentAcctFact>();
        List<IncidentDim> incidentList = new ArrayList<IncidentDim>();*/

        try {
            double totalSecGL= 0.00;
            double secTrdNetTotal= 0.00;
            DecimalFormat twoDForm = new DecimalFormat("#.##");

            String loginUser = baseViewBean$Session.getLoggedInUser().getUserId();
            List<Long> addedElementList = new ArrayList<Long>();

            CerSecurityDim cerSecDim = null;
            AccountDim account = null;
            IncidentAcctSecFact iasFact = null;
            IncidentAcctFact iaFact = null;
            long incidentId = baseViewBean$Session.getIncidentDim$Session().getIncidentDimIdN();
            IncidentDim incident = (IncidentDim)incidentDimDao.findById(IncidentDim.class, incidentId);
            ExcelListenerBean beanDetails;

            List<AccountDim> acctList = new ArrayList<AccountDim>();
            List <CerSecurityDim> cerSecList = new ArrayList<CerSecurityDim>();
            List <IncidentAcctSecFact> iasFactList = new ArrayList<IncidentAcctSecFact>();

            for (Map.Entry<Integer, ExcelListenerBean> entry : baseViewBean$Session.getExcelRecords().entrySet())
            {
                beanDetails = entry.getValue();

                //Initialize the net amounts for incorrect trade and correction trade.
                secTrdNetTotal= 0;

                cerSecDim = new CerSecurityDim();
                account = new AccountDim();
                iasFact = new IncidentAcctSecFact();
                iaFact = new IncidentAcctFact();

                //
                Object[] pycisDet = investmentDimDao.getPyCISIdByShrtName(beanDetails.getShortName());
                if(pycisDet != null && pycisDet.length > 0){
                    account.setPycisInstnIdN((Long)pycisDet[0]);
                    account.setGdwIdN((Long)pycisDet[1]);
                    account.setTrdSysShrtNmC(beanDetails.getShortName());
                    if(!addedElementList.contains((Long)pycisDet[0])){
                        addedElementList.add((Long)pycisDet[0]);
                    } 
                } 

                //
                cerSecDim.setFmrCusipC(beanDetails.getFmrCusip());
                SecurityDim sec = getSecDetailsByCusip(beanDetails.getFmrCusip());
                if(sec != null){
                    cerSecDim.setSecuNmC(sec.getSecuNmC());
                    cerSecDim.setTckrC(sec.getTckrC());
                }else {
                    cerSecDim.setSecuNmC("UNKNOWN");
                    cerSecDim.setTckrC("UNKNOWN");
                }

                //
                cerSecDim.setNumOfShrTrdN(beanDetails.getIncorrectTrdShares().longValue());

                //
                cerSecDim.setBuySellIndC(beanDetails.getIncorrectTrdBuySell().toUpperCase());
                account.setBuySellIndC(beanDetails.getIncorrectTrdBuySell().toUpperCase());

                //
                secTrdNetTotal  = Double.valueOf(twoDForm.format(beanDetails.getIncorrectTrdNet())) +
                                                Double.valueOf(twoDForm.format(beanDetails.getCorrectionTrdNet()));

                //
                totalSecGL = totalSecGL + secTrdNetTotal;

                boolean updatedStatus = false;

                // create the relationship and then add to the respective lists.
                cerSecDim.setInsUsrC(loginUser);
                cerSecDim.setInsTsD(AppGlobalUtil.getCurrentTimeStamp());
                cerSecDim.setDelIndC(AppGlobalConstants.HardCodedValues.No);

                if(!acctList.isEmpty()){
                    for( AccountDim olderAccount :acctList){
                        if(olderAccount.getPycisInstnIdN().compareTo(account.getPycisInstnIdN()) == 0) {
                            double newAcctGainLossAmt=0;
                            double oldAcctGainLossAmt=0;
                            if(account.getAcctGainLossAmtN() != null){
                                newAcctGainLossAmt = account.getAcctGainLossAmtN();
                            }
                            if(olderAccount.getAcctGainLossAmtN() != null){
                                oldAcctGainLossAmt = olderAccount.getAcctGainLossAmtN();
                            }
                            double newGLAmt = newAcctGainLossAmt + oldAcctGainLossAmt;
                            account = olderAccount;
                            account.setAcctGainLossAmtN(newGLAmt);
                            updatedStatus = true;
                        }
                    }
                }

                if(!cerSecList.isEmpty()){
                    for(CerSecurityDim olderCerSecDim : cerSecList){
                        if(olderCerSecDim.getFmrCusipC().equals(cerSecDim.getFmrCusipC())) {
                            cerSecDim = olderCerSecDim;
                            double newSecuGainLoss = 0;
                            double oldSecuGainLoss = 0;
                            if(cerSecDim.getSecuGainLossN() != null){
                                newSecuGainLoss = cerSecDim.getSecuGainLossN();
                            }
                            if(olderCerSecDim.getSecuGainLossN() != null){
                                oldSecuGainLoss = olderCerSecDim.getSecuGainLossN();
                            }
                            cerSecDim.setSecuGainLossN(newSecuGainLoss + oldSecuGainLoss);

                            for(IncidentAcctSecFact olderIASFact : iasFactList){
                                if(olderIASFact != null && olderIASFact.getCerSecurityDim() != null
                                        && olderIASFact.getCerSecurityDim().getFmrCusipC().equals(cerSecDim.getFmrCusipC())){
                                    iasFact = olderIASFact;
                                }
                            }
                        }
                    }
                }
                if(!deletedstatus){
                    deleteAllImpactedAccounts(baseViewBean$Session);
                    deletedstatus = true;
                }
                totalSecGL = Double.valueOf(twoDForm.format(totalSecGL));

                account.setInsUsrC(loginUser);
                account.setInsTsD(AppGlobalUtil.getCurrentTimeStamp());
                account.setDelIndC(AppGlobalConstants.HardCodedValues.No);
                accountDimDao.saveOrUpdate(account);

                iasFact.setAccountDim(account);
                iasFact.setIncidentDim(incident);
                iasFact.setCerSecurityDim(cerSecDim);
                iasFact.setInsUsrC(loginUser);
                iasFact.setInsTsD(AppGlobalUtil.getCurrentTimeStamp());
                iasFact.setDelIndC(AppGlobalConstants.HardCodedValues.No);

                cerSecDim.getIncidentAcctSecFacts().add(iasFact);
                account.getIncidentAcctSecFacts().add(iasFact);
                incident.getIncidentAcctSecFacts().add(iasFact);

                if(!updatedStatus){ 
                    iaFact.setAccountDim(account);
                    iaFact.setIncidentDim(incident);
                    iaFact.setInsUsrC(loginUser);
                    iaFact.setInsTsD(AppGlobalUtil.getCurrentTimeStamp());
                    iaFact.setDelIndC(AppGlobalConstants.HardCodedValues.No);

                    incident.getIncidentAcctFacts().add(iaFact);
                    account.getIncidentAcctFacts().add(iaFact);
                }
                incident.setTotGainLossN(totalSecGL);

                cerSecurityDimDao.saveOrUpdate(cerSecDim);
                incidentAcctSecFactDao.saveOrUpdate(iasFact);
                if(!updatedStatus){
                    accountDimDao.saveOrUpdate(account);
                }
                if(!acctList.contains(account)){
                    acctList.add(account);
                }
                if(!cerSecList.contains(cerSecDim)){
                    cerSecList.add(cerSecDim);
                }
                if(!iasFactList.contains(iasFact)){
                    iasFactList.add(iasFact);
                }
                if(!updatedStatus){
                    incidentAcctFactDao.saveOrUpdate(iaFact);
                }
                incidentDimDao.saveOrUpdate(incident);

                NumberFormat formatter = new DecimalFormat("#0.00");
                incidentDetailsForm.setTotalGainLoss(formatter.format(totalSecGL));

                savedStatus = true;

                /*accountsList.add(account);
                cerSecuList.add(cerSecDim);
                inciAcctSecFactList.add(iasFact);
                inciAcctFactList.add(iaFact);
                incidentList.add(incident);*/
            }

        } catch (Exception e) {
            logger.error(e.getMessage());
            e.printStackTrace();
            throw e;
        }
        finally{
            baseViewBean$Session.getExcelRecords().clear();
            baseViewBean$Session.setExcelRecords(null);
        }

        /*accountDimDao.saveOrUpdateAll(accountsList);
        cerSecurityDimDao.saveOrUpdateAll(cerSecuList);
        incidentAcctSecFactDao.saveOrUpdateAll(inciAcctSecFactList);
        incidentAcctFactDao.saveOrUpdateAll(inciAcctFactList);
        incidentDimDao.saveOrUpdateAll(incidentList);*/

        return savedStatus;
    }

The dao functions are accessed from another file. 

Please let me know how i can increase my performance.

Answer 1

问题在于您尝试从浏览器执行此操作，其中页面的默认超时为30秒。您应该从应用程序执行此操作，以便您可以控制等待上载记录的时间。

Answer 2

我遇到了类似的问题。

确保您拥有加入和搜索字段的所有密钥。
可能是您可以将文件存储在临时位置，然后通过并行线程处理它。
另一种选择是使用无状态会话（网上几乎没有信息，请参阅hibernate手册）我不确定是否有填充ManyToMany集合的选项。
通过在内存中保存表副本来缓存getOrCreate查询可能对您有所帮助（但您可能会遇到OutOfMemory异常，因此将-Xmx param传递给您的应用程序）。
所有这些可能无法解决您的问题。我决定使用本机sql查询实现这些插入。

Answer 3

应该查看多个问题：

长时间运行的操作应该异步运行。如果您使用的是Spring，则可以注释@Async。然后，您的交易不会受到网络连接或浏览器/ HTTP超时的影响。
Hibernate中的批处理操作可能非常慢。即使您设置了JDBC批处理，即使您按照in the Hibernate documentation的说明操作，您仍然会对您使用ORM这一事实感到满意。 ORMS最适合用于维护面向对象操作的状态，而不是用于批处理操作，其中任何单个对象的状态不太相关。
Hibernate中的批处理操作非常挑剔。例如，Hibernate批处理文档没有注意到您需要在配置中设置其他标志以确保它正确批处理。有关详细信息，请参阅this post。

在一天结束时，ORM总是比基本SQL慢。考虑切换到基本SQL，可能连接SQL语句，以便减少数据库跳数，或者使用存储过程，将数据传递给proc并让它运行插入。

Answer 4

打开会话时使用openStatelessSession并在结尾调用session.update。这样，persistentcontext在缓存中不能有10000个对象，所有更新都在db。

中进行

更新超过10K记录的Hibernate性能问题

4 个答案: