我正在对数据库中的16个表进行选择查询，因为对于大量数据和获取游标限制超出了异常。
我已经关闭了连接，预处理语句和结果集，但仍然使游标限制超出异常。
我关闭了连接，但仍未释放数据库游标
我已关闭init块中的连接，如下面的代码段所示，并已关闭finally块中的resultSet和preparedStatement
请建议我如何释放游标以避免此异常。
附加代码以供参考。
public class DataReader {
PDFProperty properties = new PDFProperty();
FileInputStream fileInputStream = null;
XSSFWorkbook workbook = null;
XSSFSheet sheet = null;
private Connection connection;
private PreparedStatement ps;
private ResultSet rs;
private ArrayDeque<String> OHR = new ArrayDeque<String>(18502);
private DataReader reader = null;
private PDFCollection collect;
ArrayDeque<String> OHRArrayList = new ArrayDeque<>();
private String dbArray[] = null;
private PDFProperty prop = null;
Iterator<String> headerIterator = null;
Iterator<List<String>> dataIterator = null;
Iterator<String> nestedIterator = null;
List<String> nestedList = new ArrayList<String>();
private List<List<String>> totalData = new ArrayList<List<String>>(100000);
HashMap<String, String> map = new HashMap<String, String>();
HashMap<String, String> map1 = new HashMap<String, String>();
{
System.out.println("called before constructor......");
try {
if(connection!=null)
connection.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public DataReader() {
/* Connect connect = Connect.getInstance();
connection = connect.getConnection();*/
Connect connect = new Connect();
connection = connect.setConnection();
System.err.println("******************************************************************");
System.err.println("connection is:"+connection);
System.err.println("******************************************************************");
}
public ArrayDeque<String> getOHRList() {
/*
* Connect connect = Connect.getInstance();
*
* connection = connect.getConnection();
*
* String sql = "select employee_ohr_id from OVERALL_RATING";
*
* try { ps = connection.prepareStatement(sql); rs = ps.executeQuery();
*
* while (rs.next()) { System.out.println(rs.getString(1));
*
* OHR.add(rs.getString(1));
*
* } System.out.println(OHR);
*
* } catch (SQLException e) { // TODO Auto-generated catch block
* e.printStackTrace(); }
*/
OHR.add("703045278");/*
* OHR.add("601002590");
*
* OHR.add("601002424");
*/
return OHR;
}
public List<String> getTableHeader(String name) {
List<String> header = new ArrayList<String>();
String sql = "SELECT column_name FROM USER_TAB_COLUMNS WHERE table_name = '" + name + "'ORDER BY COLUMN_ID ";
System.out.println("Header sql :" + sql);
/*Connect connect = new Connect();
connection = connect.setConnection();*/
/*
Connect connect = Connect.getInstance(); connection =
connect.getConnection();*/
try {
connection.setAutoCommit(false);
ps = connection.prepareStatement(sql);
rs = ps.executeQuery();
while (rs.next()) {
header.add(rs.getString(1));
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
connection.commit();
ps.close();
rs.close();
ps=null;
rs=null;
System.err.println("result set :"+rs);
System.err.println("prepared statement :"+ps);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
System.out.println("Table Name :" + name);
System.out.println("Header :" + header);
return header;
}
/*
* public static void main(String[] args) { DataReader dr = new
* DataReader(); System.out.println(dr.getTableHeader("REVIEW_PERIOD")); }
*/
public void getData(String list, PDFCollection col) {
/*Connect connect = new Connect();
connection = connect.setConnection();*/
/*Connect connect = Connect.getInstance(); connection =
connect.getConnection();*/
System.out.println("lis is " + list);
System.out.println("data reader :" + col);
List<String> headers = new ArrayList<String>();
reader = new DataReader();
/*
* Connect connect = Connect.getInstance();
*
* connection = connect.getConnection();
*/
prop = new PDFProperty();
dbArray = prop.getProperty("TABLE_NAMES").split("~");
/* for (String list : OHRArrayList) { */
for (String table : dbArray) {
List<String> allData = new ArrayList<String>();
List<String> rows = new ArrayList<String>();
String sql = "";
/*
* String sql =
* "select * from CAREER_PLAN where EMPLOYEE_OHR_ID = '703045278'" ;
*/
String columnCount = "SELECT count(column_name) FROM USER_TAB_COLUMNS WHERE table_name = '" + table + "'";
int count = 0;
try {
//connection.setAutoCommit(false);
ps = connection.prepareStatement(columnCount);
rs = ps.executeQuery();
while (rs.next()) {
count = Integer.parseInt(rs.getString(1));
}
headers = reader.getTableHeader(table);
System.out.println("headers :" + headers);
for (String head : headers) {
if (head.equals("OHR_ID") || head.equals("EMPLOYEE_OHR_ID")) {
sql = "select * from " + table + " where " + head + "= '" + list + "'";
}
}
System.out.println("sql is :" + sql);
System.out.println(table);
ps = connection.prepareStatement(sql, ResultSet.CLOSE_CURSORS_AT_COMMIT);
rs = ps.executeQuery();
String res = "";
while (rs.next()) {
for (int i = 1; i <= count; i++) {
res = rs.getString(i);
if (res == null) {
res = "";
}
allData.add(res);
}
}
System.out.println("all data is :" + allData);
totalData = Lists.partition(allData, count);
System.out.println(table);
// System.out.println("total data :" + totalData);
/*
* Iterator it = totalData.iterator();
*
* while (it.hasNext()) { System.out.println(it.next());
*
* }
*/
} catch (SQLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} finally {
try {
System.err.println("inside finally");
//connection.commit();
rs.close();
ps.close();
//System.out.println(rs.);
// connection.close();
// connection.close();
/// System.out.println("connection after ");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
System.out.println("======================================================================");
System.out.println(table);
System.out.println("======================================================================");
if (table.equals("EMPLOYEE_INFORMATION")) {
headerIterator = headers.iterator();
dataIterator = totalData.iterator();
while (dataIterator.hasNext()) {
nestedList = dataIterator.next();
nestedIterator = nestedList.iterator();
}
System.out.println("nested List :" + nestedList);
System.out.println("Employee Headers" + headers);
if (!(nestedList.isEmpty())) {
while (headerIterator.hasNext() && nestedIterator.hasNext()) {
map.put(headerIterator.next(), nestedIterator.next());
}
System.out.println("=============================================================================");
System.out.println("employee map :" + map);
System.out.println("=============================================================================");
for (Map.Entry<String, String> ee : map.entrySet()) {
if (ee.getKey().equalsIgnoreCase("OHR_ID")) {
col.setOHR_ID(ee.getValue().trim());
}
if (ee.getKey().equalsIgnoreCase("EMPLOYEE_FIRST_NAME")) {
col.setFirst_Name(ee.getValue().trim());
}
if (ee.getKey().equalsIgnoreCase("EMPLOYEE_MIDDLE_NAME")) {
if (ee.getValue() != null)
col.setMiddle_Name(ee.getValue().trim());
else
col.setMiddle_Name("");
}
if (ee.getKey().equalsIgnoreCase("EMPLOYEE_LAST_NAME")) {
col.setLast_Name(ee.getValue().trim());
}
if (ee.getKey().equalsIgnoreCase("FORM_TEMPLATE_NAME")) {
col.setTemplate(ee.getValue().trim() + " for");
}
if (ee.getKey().equalsIgnoreCase("FORM_COMPLETED_ON_DATE")) {
System.out.println(ee.getValue());
if (ee.getValue().trim().contains(":")) {
String compDate[] = ee.getValue().trim().split("\\s+");
col.setFormCompeletionDate(compDate[0]);
} else {
col.setFormCompeletionDate(ee.getValue().trim());
}
}
}
}
col.setOriginator(col.getFirst_Name() + " " + col.getLast_Name() + " (" + col.getOHR_ID() + ")");
}
if (table.equals("CAREER_PLAN")) {
if (totalData.size() == 0) {
List<List<String>> tempList = new ArrayList<List<String>>();
List<String> nullList = null;
for (int i = 0; i < headers.size(); i++) {
nullList = new ArrayList<String>();
nullList.add("NO DATA");
}
tempList.add(nullList);
col.setCareerPlanHeader(headers);
col.setCareerPlanTotalFilteredRows(totalData);
} else {
col.setCareerPlanHeader(headers);
col.setCareerPlanTotalFilteredRows(totalData);
}
}
if (table.equals("COMPETENCIES")) {
System.out.println("competencies " + totalData);
if (totalData.size() > 1) {
List<List<String>> sortedList = new ArrayList<List<String>>();
Map keyValueofSortedValue = new HashMap();
int index = headers.indexOf("COMPETENCY_NAME");
for (List list1 : totalData) {
String value = (String) list1.get(index);
String num[] = value.split("\\.");
System.out.println(num[0]);
keyValueofSortedValue.put(Integer.parseInt(num[0]), list1);
}
for (int i = 1; i <= keyValueofSortedValue.size(); i++) {
List finalList = (List) keyValueofSortedValue.get(i);
sortedList.add(finalList);
}
System.out.println("sett head " + headers);
col.setCompetenciesExcelHeader(headers);
col.setCompetenciesTotalFilteredRows(sortedList);
} else {
col.setCompetenciesExcelHeader(headers);
col.setCompetenciesTotalFilteredRows(totalData);
}
}
if (table.equals("FEEDBACK_APPRAISAL_PROCESS")) {
System.out.println("FEEDBACK_ON_APPRAISAL_PROCESS :" + totalData);
col.setFeedbackHeader(headers);
col.setFeedbackTotalFilteredRows(totalData);
}
if (table.equals("OVERALL_RATING")) {
System.out.println("inside overall rating" + totalData);
headerIterator = headers.iterator();
dataIterator = totalData.iterator();
while (dataIterator.hasNext()) {
System.out.println("inside while");
List nestedList = dataIterator.next();
nestedIterator = nestedList.listIterator();
}
if (!(nestedList.isEmpty())) {
while (headerIterator.hasNext() && nestedIterator.hasNext()) {
map1.put(headerIterator.next(), nestedIterator.next());
}
for (Map.Entry<String, String> ee : map1.entrySet()) {
if (ee.getKey().equalsIgnoreCase("OVERALL_PERFORMANCE_RATING")) {
if (ee.getValue().trim().equalsIgnoreCase("1")) {
col.setPerformance("1.0 - T20");
} else if (ee.getValue().trim().equalsIgnoreCase("2")) {
col.setPerformance("2.0 - HV70");
} else if (ee.getValue().trim().equalsIgnoreCase("3")) {
col.setPerformance("3.0 - LE10");
} else {
col.setPerformance("Unrated");
}
}
if (ee.getKey().equalsIgnoreCase("OVERALL_POTENTIAL_RATING_DESCRIPTION")) {
if (ee.getValue().trim().equalsIgnoreCase("High")) {
col.setPotential("1.0 - High");
} else if (ee.getValue().trim().equalsIgnoreCase("Specialist")) {
col.setPotential("2.0 - Specialist");
} else if (ee.getValue().trim().equalsIgnoreCase("Medium")) {
col.setPotential("3.0 - Medium");
} else if (ee.getValue().trim().equalsIgnoreCase("Low")) {
col.setPotential("4.0 - Low");
} else {
col.setPotential(" ");
}
}
}
}
}
if (table.equals("REVIEW_PERIOD")) {
System.out.println("Review headers :" + headers);
headerIterator = headers.iterator();
dataIterator = totalData.listIterator();
while (dataIterator.hasNext()) {
List nestedList = dataIterator.next();
nestedIterator = nestedList.listIterator();
}
HashMap<String, String> map1 = new HashMap<String, String>();
while (headerIterator.hasNext() && nestedIterator.hasNext()) {
map1.put(headerIterator.next(), nestedIterator.next().toString());
}
for (Map.Entry<String, String> ee : map1.entrySet()) {
if (ee.getKey().equalsIgnoreCase("FORM_START_DATE")) {
col.setFormStartDate(ee.getValue().trim());
}
if (ee.getKey().equalsIgnoreCase("FORM_END_DATE")) {
col.setFormEndDate(ee.getValue().trim());
}
if (ee.getKey().equalsIgnoreCase("FORM_DUE_DATE")) {
col.setDue_Date(ee.getValue().trim());
}
if (ee.getKey().equalsIgnoreCase("ORIGINATOR_FIRST_NAME")) {
col.setOrgFirstName(ee.getValue().trim());
}
if (ee.getKey().equalsIgnoreCase("ORIGINATOR_LAST_NAME")) {
col.setOrgLastName(ee.getValue().trim());
}
if (ee.getKey().equalsIgnoreCase("ORIGINATOR_OHR_ID")) {
col.setOrgOHRId(ee.getValue().trim());
}
}
col.setReview_Period(col.getFormStartDate() + " - " + col.getFormEndDate());
/*
* col.setFormStartDate("16-feb-2015");
* col.setFormEndDate("28-feb-2015"); col.setDue_Date("");
* col.setOrgFirstName(""); col.setOrgLastName("");
* col.setOrgOHRId(""); col.setReview_Period(
* "16-feb-2015 - 28-feb-2015");
*/
}
if (table.equals("PROJECT_GOALS")) {
System.out.println("project goals :" + totalData);
if (totalData.size() == 0) {
List<List<String>> tempList = new ArrayList<List<String>>();
List<String> nullList = null;
for (int i = 0; i < headers.size(); i++) {
nullList = new ArrayList<String>();
nullList.add("NO DATA");
}
tempList.add(nullList);
col.setTotalFilteredRows(tempList);
col.setExcelHeader(headers);
} else {
col.setTotalFilteredRows(totalData);
col.setExcelHeader(headers);
}
}
if (table.equals("GOALS")) {
if (totalData.size() == 0) {
List<List<String>> tempList = new ArrayList<List<String>>();
List<String> nullList = null;
for (int i = 0; i < headers.size(); i++) {
nullList = new ArrayList<String>();
nullList.add("NO DATA");
}
tempList.add(nullList);
col.setGoalExcelHeader(headers);
col.setGoalTotalFilteredRows(tempList);
} else {
col.setGoalExcelHeader(headers);
col.setGoalTotalFilteredRows(totalData);
}
}
if (table.equals("OVERALL_COMMENTS_ON_GOALS")) {
col.setOverallHeader(headers);
col.setOverallTotalFilteredRows(totalData);
}
if (table.equals("OVERALL_COMMENTS_ON_GOALS_ADD_REVIEWER")) {
/*
* it1 = headerArrayList.iterator(); it2 =
* filteredArrayList.listIterator(); while (it2.hasNext()) {
* List nestedList = it2.next(); it3 =
* nestedList.listIterator(); }
*
* HashMap<String, String> map = new HashMap<String, String>();
*
* while (it1.hasNext() && it3.hasNext()) { map.put(it1.next(),
* it3.next().toString()); }
*
* for (Map.Entry<String, String> ee : map.entrySet()) {
*
* if (ee.getKey().equalsIgnoreCase("Section Comment")) {
* coll.setHussain_Comments(ee.getValue().trim()); } if
* (ee.getKey().equalsIgnoreCase("Section Comment Owner User ID"
* )) { coll.setOverallCommentUserID(ee.getValue().trim()); } }
*/
col.setHussain_Comments("");
col.setOverallCommentUserID("");
}
if (table.equals("GENPACT_VALUES")) {
headerIterator = headers.iterator();
dataIterator = totalData.iterator();
while (dataIterator.hasNext()) {
List nestedList = dataIterator.next();
nestedIterator = nestedList.listIterator();
}
HashMap<String, String> map1 = new HashMap<String, String>();
while (headerIterator.hasNext() && nestedIterator.hasNext()) {
map1.put(headerIterator.next(), nestedIterator.next().toString());
}
for (Map.Entry<String, String> ee : map1.entrySet()) {
if (ee.getKey().equalsIgnoreCase("SECTION_COMMENT")) {
col.setGenpactValue(ee.getValue().trim());
}
}
}
if (table.equals("OVERALL_COMMENTS_ON_POTENTIAL")) {
col.setOverallPotHeader(headers);
col.setOverallPotTotalFilteredRows(totalData);
}
if (table.equals("OVERALL_COMMENTS_POTENTIAL_REV")) {
System.out.println("OVERALL_COMMENTS_ON_POTENTIAL_REVIEWER");
col.setOverallPotReviewHeader(headers);
col.setOverallPotReviewTotalFilteredRows(totalData);
}
if (table.equals("PERONAL_DEVELOPMENT_PLAN")) {
System.out.println("inside pdp");
if (totalData.size() > 1) {
List<List<String>> sortedList = new ArrayList<List<String>>();
Map trainingMap = new HashMap();
Map competencyMap = new HashMap();
int index = headers.indexOf("SECTION_CUSTOM_FIELD_NAME");
for (List list1 : totalData) {
String value = (String) list1.get(index);
value = value.substring(0, value.length() - 1);
String num[] = value.split("\\s+");
if (num[0].trim().contains("Training")) {
trainingMap.put(Integer.parseInt(num[1].trim()), list1);
} else if (num[0].trim().contains("Competency")) {
competencyMap.put(Integer.parseInt(num[1].trim()), list1);
}
}
for (int i = 1; i <= competencyMap.size(); i++) {
List finalList = (List) competencyMap.get(i);
sortedList.add(finalList);
}
for (int i = 1; i <= trainingMap.size(); i++) {
List finalList = (List) trainingMap.get(i);
sortedList.add(finalList);
}
col.setPDPHeader(headers);
col.setPDPTotalFilteredRows(sortedList);
} else {
col.setPDPHeader(headers);
col.setPDPTotalFilteredRows(totalData);
}
}
if (table.equals("PERSONAL_DEV_PLAN_RATING_TRAIN")) {
System.out.println("PERSONAL_DEVELOPEMENT_PLAN_REVIEW");
col.setPDPReviewHeader(headers);
col.setPDPReviewTotalFilteredRows(totalData);
}
if (table.equals("SUCCESSION_PLAN")) {
col.setSuccessHeader(headers);
col.setSuccessTotalFilteredRows(totalData);
}
if (table.equals("RELEASIBILITY_TIMELINE")) {
/*
* it1 = headerArrayList.iterator(); it2 =
* filteredArrayList.listIterator(); while (it2.hasNext()) {
* List nestedList = it2.next(); it3 =
* nestedList.listIterator(); }
*
* HashMap<String, String> map = new HashMap<String, String>();
*
* while (it1.hasNext() && it3.hasNext()) { map.put(it1.next(),
* it3.next().toString()); }
*
* for (Map.Entry<String, String> ee : map.entrySet()) {
*
* if (ee.getKey().equalsIgnoreCase("Section Custom Field Name"
* )) { coll.setReleasability_CFN(ee.getValue().trim()); } if
* (ee.getKey().equalsIgnoreCase("Section Custom Field Value"))
* { if (ee.getValue().trim().equalsIgnoreCase("n1224m")) {
* coll.setReleasability_CFV("Next 12 to 24 Month"); } else if
* (ee.getValue().trim().equalsIgnoreCase("n612m")) {
* coll.setReleasability_CFV("Next 6 to 12 Month"); } else if
* (ee.getValue().trim().equalsIgnoreCase("n6m")) {
* coll.setReleasability_CFV("Next 6 Month"); } else if
* (ee.getValue().trim().equalsIgnoreCase("np")) {
* coll.setReleasability_CFV("Not Planned"); } else {
* coll.setReleasability_CFV(" "); } } }
*/
col.setReleasability_CFN("");
col.setReleasability_CFV("");
}
if (table.equals("SIGNATURE")) {
}
}
/*try {
connection.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}*/
}
public List<String> getOHRListFromMore4K() {
String columnWanted = "Employee OHR ID";
Integer columnNo = null;
// output all not null values to the list
List<String> list = new ArrayList<String>();
try {
// fileInputStream = new
// FileInputStream(properties.getProperty("OHR_COUNT_FILE"));
// For Rating
System.err.println(properties.getProperty("OHR_4K"));
fileInputStream = new FileInputStream(properties.getProperty("OHR_4K"));
workbook = new XSSFWorkbook(fileInputStream);
sheet = workbook.getSheetAt(0);
// Row firstRow = sheet.getRow(0);
/*
* for (Cell cell : firstRow) { if
* (cell.getStringCellValue().equals(columnWanted)) { columnNo =
* cell.getColumnIndex(); System.err.println(columnNo); } }
*/
for (Row row : sheet) {
Cell cell = row.getCell(0);
if (cell == null || cell.getCellType() == Cell.CELL_TYPE_BLANK) {
// Nothing in the cell in this row, skip it
} else {
if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
DataFormatter dataFormatter = new DataFormatter();
String cellActualValue = dataFormatter.formatCellValue(cell);
list.add(cellActualValue.trim());
}
if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
DataFormatter dataFormatter = new DataFormatter();
String cellActualValue = dataFormatter.formatCellValue(cell);
list.add(cellActualValue.trim());
}
}
}
} catch (IOException ioe) {
ioe.printStackTrace();
} finally {
if (fileInputStream != null) {
try {
fileInputStream.close();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}
boolean flag = false;
for (String str : list) {
if (str.equalsIgnoreCase("Employee OHR ID")) {
flag = true;
}
}
if (flag) {
list.remove("Employee OHR ID");
}
return list;
}
}
堆栈追踪 -
competencies [[2015 Appraisal, 760004687, Genpact Values, Ana is committed to Genpact values, although she is new in the company she has been adapting very quickly, Completed]]
java.sql.SQLException: ORA-01000: maximum open cursors exceeded
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399)
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1017)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:655)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:249)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:566)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:215)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:58)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:776)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:897)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1034)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3820)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3867)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1502)
at com.genpact.dao.DataReader.getData(DataReader.java:212)
at com.genpact.templateGen.EmpTemplateGen.getTemplate(EmpTemplateGen.java:160)
at com.genpact.templateGen.EmpTemplateGen.main(EmpTemplateGen.java:113)