restarting network in linux
Restart networking: # /etc/init.d/network restart
How to change hostname in Linux
=> Edit file /etc/sysconfig/network using your favourite editor. => Look for HOSTNAME=xxxxxx => Change the xxxx to the name you wish to set for your computer. (ex: HOSTNAME=techiecorner.com) => Save the file and restart the server.
good linux notes
http://tldp.org/HOWTO/Partition/intro.html
ORA-8031 issue and solution if it is occuring due to truncate.
After doing further research on Oracle errors from metalink, I found following for ORA-8031. CAUSE: The data_object_id (seg/obj) stored in the block is different than the data_object_id stored in the segment header. EXPLAINATION: The expected behavior can be that tables are being truncated while a query from those tables is still in execution. Look if…
Read More “ORA-8031 issue and solution if it is occuring due to truncate.” »
fdisk -l explaination about Primary-Logical-Extended Partitions
# fdisk -l Disk /dev/hda: 240 heads, 63 sectors, 1940 cylinders Units = cylinders of 15120 * 512 bytes Device Boot Start End Blocks Id System /dev/hda 1 286 2162128+ c Win95 FAT32 (LBA) /dev/hda2 * 288 1940 12496680 5 Extended /dev/hda5 288 289 15088+ 83 Linux /dev/hda6 290 844 4195768+ 83 Linux /dev/hda7 845…
Read More “fdisk -l explaination about Primary-Logical-Extended Partitions” »
Drop database in Oracle 10g
Dropping a Database in 10G Consists of the following steps. echo $ORACLE_SID sqlplus “/as sysdba” SQL> startup nomount; ORACLE instance started. Total System Global Area 1077936128 bytes Fixed Size 2034344 bytes Variable Size 427824472 bytes Database Buffers 633339904 bytes Redo Buffers 14737408 bytes SQL> alter database mount exclusive; Database altered. SQL> alter system enable restricted…
find the files that are 1 day old.
find . -name “*” -type f -mtime -1 -exec ls -rlt {} ;
Remove duplicate rows from table
declare cursor c1 is select distinct PRODUCT_SKU, FIT_ID from geo_florist order by PRODUCT_SKU, FIT_ID; begin for cur1 in c1 loop delete from geo_florist a where a.rowid != ( select max(b.rowid) from geo_florist b where a.product_sku = b.product_sku and a.fit_id = b.fit_id) and a.product_sku = cur1.product_sku and a.fit_id = cur1.fit_id; if (mod(c1%rowcount, 1000) = 0) then…
on IBM-AIX for display
On IBM-AIX, vi was not working properly. Then set the environment variable as following and it started working. ( Thanks Magesh for same). $ export TERM=vt100 $
Unix split command to split files
split -20 source_filename.lst test1 Above command will split source_filename.lst with every 20 lines. Will create files with 20 lines and with following names. -rw-r–r– 1 oracle dba 41 Dec 28 11:53 test1ag -rw-r–r– 1 oracle dba 2127 Dec 28 11:53 test1af -rw-r–r– 1 oracle dba 2240 Dec 28 11:53 test1ae -rw-r–r– 1 oracle dba 2243…