在我的问题情况下，我使用服务每天在特定时间更新数据库，以提高插入速度我已将数据库插入操作放入try-catch-finally块并使用了事务，这是我最终成功并在那里结束。这些都适用于某些手机上的瑕疵，但在双核和4.0软糖的三星Duos上崩溃。我得到的错误信息是：
02-15 00:00:28.435: W/SQLiteConnectionPool(11250): The connection pool for database '+data+data+com_exa_xxx+databases+Bdr' has been unable to grant a connection to thread 1 (main) with flags 0x5 for 28.005001 seconds.
02-15 00:00:28.435: W/SQLiteConnectionPool(11250): Connections: 0 active, 1 idle, 0 available.
以下是我的插入函数的完整代码：
public void refreshRecords(){
dbHelper.beginTransaction();
try{
System.out.println("in refresh");
int years;
long secon;
long min;
int hours;
int mon;
int days;
int weeks;
String CONTACT_ID,CONTACT_NAME,CONTACT_IMAGE_URI;
String dateToInsert;
intCal = new IntervalCalculation();
DateFormat df = new SimpleDateFormat("EEE, d MMM yyyy, h:mm a");
String datex = df.format(Calendar.getInstance().getTime());
SharedPreferences prefsx = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
Editor editorx = prefsx.edit();
editorx.putString("refresh", datex);
editorx.commit();
Cursor c = dbHelper.fetchAdhoc();
dbHelper.NotificationDrop();
if (c.moveToFirst()) {
do {
try{
String name = c.getString(c.getColumnIndexOrThrow("Name"));
String displayBirthday = c.getString(c.getColumnIndexOrThrow("DOB"));
String imageData = c.getString(c.getColumnIndexOrThrow("ImageData"));
//CONTACT_ID,CONTACT_NAME,CONTACT_IMAGE_URI
CONTACT_ID = "10203040506070";
CONTACT_NAME = toTitleCase(name);
CONTACT_IMAGE_URI = imageData;
dateToInsert = displayBirthday;
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date date = format.parse(dateToInsert);
java.sql.Date dx = new java.sql.Date(date.getTime());
Date key = dx;
years = getDiffYear(key); // For years elapsed
secon = seconds(key); // for seconds elapsed
min = seconds(key) / 60; // For minutes elapsed
hours = (int) (seconds(key) / 60) / 60; // For hours elapsed
mon = months(String.valueOf(key)); // for months elapsed
days = daysElapsed(key); // Days elapsed
weeks = daysElapsed(key) / 7; // For weeks
dbHelper.insert(dateToInsert, CONTACT_NAME, String.valueOf(days), String.valueOf(hours), CONTACT_IMAGE_URI, String.valueOf(min),String.valueOf(mon), String.valueOf(secon), CONTACT_ID, String.valueOf(weeks), String.valueOf(years));
int PRIMARY_ID = dbHelper.getPrimaryId(); // Fetch the PrimaryId (_id) of the above inserted row, its the Foreign key for Notification and SpecialNotifications Table.
String FOREIGN_KEY = dbHelper.getHighestID(PRIMARY_ID); // Same as above, but fetches the Name field of the last inserted row.
//=========================================================================
//**Database Insertions Notifications Table/ SpecialNotifications Table**
//=========================================================================
//=======================================================================================//
//Regular intervals DB Insertions:
//======================================================================================//
//Notification Types:
//1 for months
//2 for weeks
//3 for days
//4 for minutes
//5 for years
//6 for seconds
//7 for hours
//======================================================================================//
//==============================
//For Months
//==============================
intCal.monthsNotify(mon, dateToInsert);
int monSpecial = intCal.getMonthRegular();
Date dateMonReg = intCal.getMonRegDate();
dbHelper.insertNotifications(1, convertDate(dateMonReg), 0, monSpecial,FOREIGN_KEY,PRIMARY_ID);
//===============================
//For Weeks
//===============================
intCal.weeksToNotify(weeks,dateToInsert);
int weekSpecial = intCal.getWeekRegular();
Date dateWeekReg =intCal.getWeekRegDate();
dbHelper.insertNotifications(2, convertDate(dateWeekReg), 0, weekSpecial,FOREIGN_KEY,PRIMARY_ID);
//===============================
//For Days
//===============================
intCal.daysToNotify(days, dateToInsert);
int daysSpecial= intCal.getDaysRegular();
Date dateDaysReg = intCal.getDaysRegDate();
dbHelper.insertNotifications(3, convertDate(dateDaysReg), 0, daysSpecial,FOREIGN_KEY,PRIMARY_ID);
//===============================
//For minutes
//===============================
intCal.minutesToNotify(min,dateToInsert);
long minutesSpecial= intCal.getMinutesRegular();
Date dateMinsReg = intCal.getMinutesRegDate();
dbHelper.insertNotifications(4, convertDate(dateMinsReg), 0,(int) minutesSpecial,FOREIGN_KEY,PRIMARY_ID);
//==============================
//For Years
//==============================
intCal.yearsToNotify(years, dateToInsert);
int yearsSpecial = intCal.getYearsRegular();
Date dateYearsReg = intCal.getYearsRegDate();
dbHelper.insertNotifications(5, convertDate(dateYearsReg), 0, yearsSpecial,FOREIGN_KEY,PRIMARY_ID);
//=============================
//For Seconds
//=============================
intCal.secondsToNotify(secon, dateToInsert);
long secondsSpecial= intCal.getSecondsRegular();
Date dateSecondsReg = intCal.getSecondsRegDate();
dbHelper.insertNotifications(6, convertDate(dateSecondsReg), 0, secondsSpecial,FOREIGN_KEY,PRIMARY_ID);
//=============================
//For Hours
//=============================
intCal.hoursToNotify(hours, dateToInsert);
int hoursSpecial= intCal.getHoursRegular();
Date dateHoursReg= intCal.getHoursRegDate();
dbHelper.insertNotifications(7, convertDate(dateHoursReg), 0, hoursSpecial,FOREIGN_KEY,PRIMARY_ID);
//============================================================================================//
//Special Intervals
//============================================================================================//
//Notification Types:
//1 for months
//2 for weeks
//3 for days
//4 for minutes
//5 for years
//6 for seconds
//7 for hours
//For Years
intCal.specialIntervalYears(years, dateToInsert);
int yearsOnceSpecial =intCal.getYearsSpecial();
Date dateYearsSpecial = intCal.getYearsSpDate();
dbHelper.insertSpecialNotifications(5, convertDate(dateYearsSpecial), yearsOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Months
intCal.specialIntervalMonths(mon,dateToInsert);
int monthsOnceSpecial= intCal.getMonthsSpecial();
Date dateMonthsSpecial = intCal.getMonthsSpDate();
dbHelper.insertSpecialNotifications(1, convertDate(dateMonthsSpecial), monthsOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Weeks
intCal.specialIntervalsWeeks(weeks,dateToInsert);
int weeksOnceSpecial= intCal.getWeeksSpecial();
Date dateWeeksSpecial = intCal.getWeeksSpDate();
dbHelper.insertSpecialNotifications(2, convertDate(dateWeeksSpecial), weeksOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Days
intCal.specialIntervalsDays(days, dateToInsert);
int daysOnceSpecial= intCal.getDaysSpecial();
Date dateDaysSpecial = intCal.getDaysSpDate();
dbHelper.insertSpecialNotifications(3, convertDate(dateDaysSpecial), daysOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Hours
intCal.specialIntervalsHours(hours,dateToInsert);
int hoursOnceSpecial= intCal.getHoursSpecial();
Date dateHoursSpecial = intCal.getHoursSpDate();
dbHelper.insertSpecialNotifications(7, convertDate(dateHoursSpecial), hoursOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Minutes
intCal.specialIntervalMinutes(min,dateToInsert);
long minutesOnceSpecial= intCal.getMinutesSpecial();
Date dateMinutesSpecial= intCal.getMinutesSpDate();
dbHelper.insertSpecialNotifications(4, convertDate(dateMinutesSpecial), (int)minutesOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Seconds
intCal.specialIntervalsSeconds(secon,dateToInsert);
long secondsOnceSpecial= intCal.getSecondsSpecial();
Date dateSecondsSpecial= intCal.getSecondsSpDate();
dbHelper.insertSpecialNotifications(6, convertDate(dateSecondsSpecial), secondsOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
}catch(Exception e){
}
}while(c.moveToNext());
}
File toRead = null;
try{
File file = new File(getApplicationContext().getFilesDir()+"/BirthdayReminders/output.txt");
if (file.exists()) {
BufferedReader br = new BufferedReader(new FileReader(getApplicationContext().getFilesDir()+"/BirthdayReminders/output.txt"));
if (br.readLine() != null) {
toRead=new File(getApplicationContext().getFilesDir()+"/BirthdayReminders/output.txt");
}else{
System.out.println("F1");
toRead=new File(getApplicationContext().getFilesDir()+"/BirthdayReminders/fileone.txt");
}
}else{
toRead=new File(getApplicationContext().getFilesDir()+"/BirthdayReminders/fileone.txt");
}
FileInputStream fis = new FileInputStream(toRead);
Scanner sc=new Scanner(fis);
String currentLine;
int count = 0;
while(sc.hasNextLine()){
count++;
currentLine=sc.nextLine();
StringTokenizer st=new StringTokenizer(currentLine,"=",false);
CONTACT_NAME = toTitleCase(st.nextToken());
if(CONTACT_NAME.contains("'")){
CONTACT_NAME = CONTACT_NAME.replace("'", "");
}
System.out.println(CONTACT_NAME);
// *********
String listStr = st.nextToken();
String cut = listStr.substring(1, listStr.length() - 1);
String[] array = cut.split(",");
CONTACT_ID = (array[0].trim());
System.out.println(CONTACT_ID);
String dateStr = (array[1].trim());
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date date = format.parse(dateStr);
java.sql.Date dx = new java.sql.Date(date.getTime());
Date key = dx;
dateToInsert = String.valueOf(dx);
CONTACT_IMAGE_URI = (array[2].trim());
System.out.println(CONTACT_IMAGE_URI);
years = getDiffYear(key); // For years elapsed
System.out.println(years);
secon = seconds(key); // for seconds elapsed
System.out.println(secon);
min = seconds(key) / 60; // For minutes elapsed
System.out.println(min);
hours = (int) (seconds(key) / 60) / 60; // For hours elapsed
System.out.println(hours);
mon = months(String.valueOf(key)); // for months elapsed
System.out.println(mon);
days = daysElapsed(key); // Days elapsed
System.out.println(days);
weeks = daysElapsed(key) / 7; // For weeks
System.out.println(weeks);
//dbHelper.open();
//===============================================================================================================
if (dateToInsert.contains("0001-") == true){ //Special Case, we added 0001 to Birthdays Which Have NO Year field.
//===========================================================================================================
dbHelper.insert(dateToInsert, CONTACT_NAME, "","", CONTACT_IMAGE_URI, "", "", "", CONTACT_ID, "", ""); // All other fields will be empty, because we don't have a Year.
int PRIMARY_ID = dbHelper.getPrimaryId();
String FOREIGN_KEY = dbHelper.getHighestID(PRIMARY_ID);
//=====================================================================================================
//In this case we are only interested in fetching the year alert for next birthday of this contact -->
//=====================================================================================================
intCal.yearsToNotify(years, dateToInsert);
int yearsSpecial = intCal.getYearsRegular();
Date dateYearsReg = intCal.getYearsRegDate();
dbHelper.insertNotifications(5, convertDate(dateYearsReg), 0, yearsSpecial,FOREIGN_KEY,PRIMARY_ID);
}
//=========================================================================
//Case when all the Date fields exist and we set up notifications --->
//=========================================================================
else if(dateToInsert != "null" && dateToInsert.contains("0001-") != true){
dbHelper.insert(dateToInsert, CONTACT_NAME, String.valueOf(days), String.valueOf(hours), CONTACT_IMAGE_URI, String.valueOf(min),String.valueOf(mon), String.valueOf(secon), CONTACT_ID, String.valueOf(weeks), String.valueOf(years));
int PRIMARY_ID = dbHelper.getPrimaryId(); // Fetch the PrimaryId (_id) of the above inserted row, its the Foreign key for Notification and SpecialNotifications Table.
String FOREIGN_KEY = dbHelper.getHighestID(PRIMARY_ID); // Same as above, but fetches the Name field of the last inserted row.
//=========================================================================
//**Database Insertions Notifications Table/ SpecialNotifications Table**
//=========================================================================
//=======================================================================================//
//Regular intervals DB Insertions:
//======================================================================================//
//Notification Types:
//1 for months
//2 for weeks
//3 for days
//4 for minutes
//5 for years
//6 for seconds
//7 for hours
//======================================================================================//
//==============================
//For Months
//==============================
intCal.monthsNotify(mon, dateToInsert);
int monSpecial = intCal.getMonthRegular();
Date dateMonReg = intCal.getMonRegDate();
dbHelper.insertNotifications(1, convertDate(dateMonReg), 0, monSpecial,FOREIGN_KEY,PRIMARY_ID);
//===============================
//For Weeks
//===============================
intCal.weeksToNotify(weeks,dateToInsert);
int weekSpecial = intCal.getWeekRegular();
Date dateWeekReg =intCal.getWeekRegDate();
dbHelper.insertNotifications(2, convertDate(dateWeekReg), 0, weekSpecial,FOREIGN_KEY,PRIMARY_ID);
//===============================
//For Days
//===============================
intCal.daysToNotify(days, dateToInsert);
int daysSpecial= intCal.getDaysRegular();
Date dateDaysReg = intCal.getDaysRegDate();
dbHelper.insertNotifications(3, convertDate(dateDaysReg), 0, daysSpecial,FOREIGN_KEY,PRIMARY_ID);
//===============================
//For minutes
//===============================
intCal.minutesToNotify(min,dateToInsert);
long minutesSpecial= intCal.getMinutesRegular();
Date dateMinsReg = intCal.getMinutesRegDate();
dbHelper.insertNotifications(4, convertDate(dateMinsReg), 0,(int) minutesSpecial,FOREIGN_KEY,PRIMARY_ID);
//==============================
//For Years
//==============================
intCal.yearsToNotify(years, dateToInsert);
int yearsSpecial = intCal.getYearsRegular();
Date dateYearsReg = intCal.getYearsRegDate();
dbHelper.insertNotifications(5, convertDate(dateYearsReg), 0, yearsSpecial,FOREIGN_KEY,PRIMARY_ID);
//=============================
//For Seconds
//=============================
intCal.secondsToNotify(secon, dateToInsert);
long secondsSpecial= intCal.getSecondsRegular();
Date dateSecondsReg = intCal.getSecondsRegDate();
dbHelper.insertNotifications(6, convertDate(dateSecondsReg), 0, secondsSpecial,FOREIGN_KEY,PRIMARY_ID);
//=============================
//For Hours
//=============================
intCal.hoursToNotify(hours, dateToInsert);
int hoursSpecial= intCal.getHoursRegular();
Date dateHoursReg= intCal.getHoursRegDate();
dbHelper.insertNotifications(7, convertDate(dateHoursReg), 0, hoursSpecial,FOREIGN_KEY,PRIMARY_ID);
//============================================================================================//
//Special Intervals
//===========================================================================================//
//Notification Types:
//1 for months
//2 for weeks
//3 for days
//4 for minutes
//5 for years
//6 for seconds
//7 for hours
//For Years
intCal.specialIntervalYears(years, dateToInsert);
int yearsOnceSpecial =intCal.getYearsSpecial();
Date dateYearsSpecial = intCal.getYearsSpDate();
dbHelper.insertSpecialNotifications(5, convertDate(dateYearsSpecial), yearsOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Months
intCal.specialIntervalMonths(mon,dateToInsert);
int monthsOnceSpecial= intCal.getMonthsSpecial();
Date dateMonthsSpecial = intCal.getMonthsSpDate();
dbHelper.insertSpecialNotifications(1, convertDate(dateMonthsSpecial), monthsOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Weeks
intCal.specialIntervalsWeeks(weeks,dateToInsert);
int weeksOnceSpecial= intCal.getWeeksSpecial();
Date dateWeeksSpecial = intCal.getWeeksSpDate();
dbHelper.insertSpecialNotifications(2, convertDate(dateWeeksSpecial), weeksOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Days
intCal.specialIntervalsDays(days, dateToInsert);
int daysOnceSpecial= intCal.getDaysSpecial();
Date dateDaysSpecial = intCal.getDaysSpDate();
dbHelper.insertSpecialNotifications(3, convertDate(dateDaysSpecial), daysOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Hours
intCal.specialIntervalsHours(hours,dateToInsert);
int hoursOnceSpecial= intCal.getHoursSpecial();
Date dateHoursSpecial = intCal.getHoursSpDate();
dbHelper.insertSpecialNotifications(7, convertDate(dateHoursSpecial), hoursOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Minutes
intCal.specialIntervalMinutes(min,dateToInsert);
long minutesOnceSpecial= intCal.getMinutesSpecial();
Date dateMinutesSpecial= intCal.getMinutesSpDate();
dbHelper.insertSpecialNotifications(4, convertDate(dateMinutesSpecial), (int)minutesOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
//For Seconds
intCal.specialIntervalsSeconds(secon,dateToInsert);
long secondsOnceSpecial= intCal.getSecondsSpecial();
Date dateSecondsSpecial= intCal.getSecondsSpDate();
dbHelper.insertSpecialNotifications(6, convertDate(dateSecondsSpecial), secondsOnceSpecial,FOREIGN_KEY,PRIMARY_ID);
System.out.println("Iterating Count: "+count);
}
}
System.out.println("Final Count: "+count);
LC.writeToSD();
}catch (Exception e){
System.out.println("Inner Catch in service"+e);
}
}catch(Exception e){
System.out.println("Catch in service"+e);
}finally{
dbHelper.setTransactionSuccessful();
dbHelper.endTransaction();
dbHelper.close();
}
}
答案 0 :(得分：0)
检查您在另一段尚未完成的代码中是否有交易。这是导致此错误的最可能原因。
确保您没有多次启动AsyncTask，并且您在dbhelper中调用的方法正确地打开和关闭所有内部事务。