DBA

http://www.mssqltips.com/sqlservertip/2977/demonstrations-of-transaction-isolation-levels-in-sql-server/?utm_source=dailynewsletter&utm_medium=email&utm_content=headline&utm_campaign=20130826 Demonstrations of Transaction Isolation Levels in SQL Server By:  Derek Colley    |    Read Comments (5)    |   Related Tips:  More  >  Locking and Blocking Free SQL Server Learning: You Inherited a Database, Now What? Problem You are looking at ways of ensuring atomicity and consistency in your database by ensuring transactional integrity. You may want to avoid locks, or ensure problems such as lost updates or dirty reads cannot occur, or otherwise ensure the quality of your data. Transactional isolation is a narrow but somewhat complex subject that might be ideal for your needs. Solution This article will cover the five transaction isolation settings - READ UNCOMMITTED, READ COMMITTED (lock...

I have a request from user that he want to run a report from server automatically on third Monday every month, I use the following Unix shell script to take care of it. #RUNDATE=`cal |awk 'NR == 3 { print $2; }'` #if [ "$RUNDATE" == '' ]; then NUMBERFIELD=`cal |awk 'NR == 3 { print NF; }'` if [ $NUMBERFIELD -lt 6 ]; then         RUNDATE=`cal |awk 'NR == 6 { print $2; }'`         else RUNDATE=`cal |awk 'NR == 5 { print $2; }'` fi echo $RUNDATE TODAY=`date +%e` if [ $TODAY == $RUNDATE ]; then echo "Today `date +%Y%m%d` is run day!" else echo "Today `date +%Y%m%d` is NOT run day!" echo "run date should be at ${RUNDATE}th, which is the thrid Monday for each month." exit fi ... sqlplus -s / as sysdba <<- EOF         SET MARKUP HTML ON ENTMAP ON SPOOL ON PREFORMAT OFF         SET ECHO OFF TERM OFF VERIFY OFF FEEDBACK OFF TRIMS OFF PAGESIZE 999         set marku...

I have a database link created between oracle and sqlserver using oracle tg4odbc, the product is installed on windows server and run as service "OracleOraGtw11g_home1TNSListener", but sometime the service cannot started, the root cause of this problem is that the port number 1521 is used by an non-existent process. The first step is to use netstat -bano|find "1521" to get the process id, in my case it's 5844, which shows the connection is from my oracle server 10.8.0.169 H:\>netstat -bano|find "1521"   TCP    0.0.0.0:1521           0.0.0.0:0              LISTENING       5844   TCP    10.14.45.33:1521       10.8.0.169:42987       ESTABLISHED     5844 however the process id does not show in either task manager or process explorer. The next step is to run tcpview, which shows non-existent under process column, there are three rows, t...