//文件：DbConnectionDefaultPool.java的第二部分
/**
* Housekeeping thread. Runs in the background with low CPU overhead.
* Connections are checked for warnings and closure and are periodically
* restarted.
* This thread is a catchall for corrupted
* connections and prevents the buildup of open cursors. (Open cursors
* result when the application fails to close a Statement).
* This method acts as fault tolerance for bad connection/statement programming.
*/
public void run() {
boolean forever = true;
Statement stmt=null;
String currCatalog=null;
while(forever) {
// Make sure the log file is the one this instance opened
// If not, clean it up!
try {
BufferedReader in = new BufferedReader(new
FileReader(logFileString + "pid"));
String curr_pid = in.readLine();
if(curr_pid.equals(pid)) {
//log.println("They match = " + curr_pid);
}
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