db2inst1@nc145016:/opt> db2 BACKUP DATABASE CDSDB TO "/opt/BKP"
Backup successful. The timestamp for this backup image is : 20100709051851
-- The following commands may not run as expected in a multi database partition environment if executed from a single script.
-- Quiesce Database
-- Run on any database partition.
CONNECT TO CDSDB;
QUIESCE DATABASE IMMEDIATE FORCE CONNECTIONS;
CONNECT RESET;
-- Backup Database Partition Grouping 1
-- Run on database partition(s): 0
BACKUP DATABASE CDSDB TO "/opt/BKP" WITH 2 BUFFERS BUFFER 1024 PARALLELISM 1 WITHOUT PROMPTING;
-- Unquiesce Database
-- Run on any database partition.
CONNECT TO CDSDB;
UNQUIESCE DATABASE;
CONNECT RESET;
db2inst1@nc145016:/opt/BKP> db2 RESTORE DATABASE CDSDB FROM "/opt/BKP" TAKEN AT 20100708081818
DB20000I The RESTORE DATABASE command completed successfully.
RESTORE DATABASE CDSDB FROM "/opt/BKP" TAKEN AT 20100708081818 WITH 2 BUFFERS BUFFER 1024 PARALLELISM 1 WITHOUT PROMPTING;
Here is a sample SQL queries to compare the usage of "NOT IN" in Oracle and DB2..
Usually to filter few rows from the result of one SELECT query we combine another SELECT query with NOT IN phrase.
Example : 1 in Oracle
SELECT * FROM emp WHERE rownum=1 AND rowid NOT IN(SELECT rowid FROM emp WHERE rownum < 10);
Example 2 : in DB2
SELECT FD.SERVER_NAME FROM CDSSCHEMA.DEPOT_SERVER FD where FD.SERVER_NAME NOT IN (SELECT DS.SERVER_NAME FROM CDSSCHEMA.TARGETLIST_MAP TM, CDSSCHEMA.TARGETLIST T, CDSSCHEMA.DEPOT_SERVER DS, CDSSCHEMA.TARGET_SERVER TS WHERE TM.PACKAGE_ID='1278328705570' AND TM.TARGETLIST_ID=T.TARGETLIST_ID AND DS.SERVER_ID=TS.SERVER_ID AND TS.TARGETLIST_ID=T.TARGETLIST_ID ORDER BY DS.SERVER_NAME)
The above query return the list of depot server names which are not in the second select queury.
Basically I want to check whether a directory has the read write permissions for the user?
I am using here a simple commonsense that a read write permissions will make the octal permissions of it more than 600 for sure .. that's it.
d rwx rwx rwx
d rw- --- ---
420 000 000
6 0 0
rwx r-x r-x
7 5 5
So it should be always greater than 600 for a directory to have read write permissions always.
Basically I'm using stat tool to find the permissions of a dir
Ex : check stat for /opt/a
nc184120:/opt # stat /opt/a
File: `/opt/a'
Size: 48 Blocks: 0 IO Block: 4096 directory
Device: 802h/2050d Inode: 101912 Links: 2
Access: (0155/d--xr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2010-07-01 22:53:59.845347264 -0700
Modify: 2010-07-01 01:45:43.769709152 -0700
Change: 2010-07-01 01:46:14.790993200 -0700
So the above script doesn't have read or write permissions.
Shell script :
dir="/opt/a"
echo "Checking the permissions for $dir"
stat $dir
echo "##############################################"
if [ `stat -c "%a" $dir` -ge 600 ] ; then
echo "$dir has Read Write permissions."
else
echo "$dir has no read write permissions."
fi
and the output looks like below ...
nc184120:/opt # ./per.sh
Checking the permissions for /opt/a
File: `/opt/a'
Size: 48 Blocks: 0 IO Block: 4096 directory
Device: 802h/2050d Inode: 101912 Links: 2
Access: (0155/d--xr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2010-07-01 22:53:59.845347264 -0700
Modify: 2010-07-01 01:45:43.769709152 -0700
Change: 2010-07-01 01:46:14.790993200 -0700
##############################################
/opt/a has no read write permissions.
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