web analytics

mySQL: size of the database

SELECT table_schema "Database",  SUM( data_length + index_length ) / 1024 / 1024 "Size (MB)",  SUM( data_free )/ 1024 / 1024 "Free (MB)" FROM information_schema.tables GROUP BY table_schema ;

This will work in mySQL 5.0.2 and newer. Use SHOW TABLE STATUS command for other versions.

MS SQL & Sybase: recreate master database

Sybase: before 12.5: buildmaster (bldmatr for NT)

buildmaster -d master_device -s size_in_2k_pages

12.5 and later: dataserver with some options (sqlsvr for NT)

dataserver -d master_device -b size -forcebuild -z page_size -Z size_of_master_db


before MS 2005: rebuildm utility (GUI)

MS SQL 2005:

Start server in single-user mode (sqlserver.exe -m) setup.exe /qn INSTANCENAME=instance_name REINSTALL=SQL_Engine REBUILDDATABASE=1 […]

Process all databases in Sybase

#!/usr/bin/ksh echo "Started…" print -u2 -n "Enter password:" stty -echo read PASS stty echo print rm -f databases.lst isql -U sa -S $DSQUERY -w 999<<EOF | awk ‘/DBLABEL/ { print $2 }’ > databases.lst $PASS select ‘DBLABEL’ "XXX", name from master..sysdatabases go exit EOF for DB in $(cat databases.lst) ; do print -u2 "Processing $DB […]