We have a database that was used to store some valuable data. The Id column was set to auto increment when a new record was inserted. After about 127 records we started to get the above error message. come to find out we designed the column to use tinyint instead of INT. TinyINT has a max value of 127 , while the record will insert into the table. The id value remained at 127 for all records after. This could have been a huge problem with a larger and high volume application. We ignored the error for about 30 days as it was a warning and not a true error.

Despite what This blog says to issue the following SET GLOBAL SQL_MODE=”; . I would recommend exploring all options before changing the value of the sql mode.

Please check the following resource links to help you make a decision
Numeric Types
MySQL Modes

Reference: http://dev.mysql.com/doc/refman/5.1/en/time-zone-support.html

Some customer will attempt to use the SET SESSION time_zone query to set the time zone for their database. This will only work if we have loaded the zone data into the mysql.time_zone_name Table.

One of the error will be
mysql> SET SESSION time_zone = ‘US/Central’;
ERROR 1298 (HY000): Unknown or incorrect time zone: ‘US/Central’ <*missing zone data*>

Log into the server as root

Type Command : mysql
Run this query to check if the zone data already exist
mysql> SELECT COUNT(*) FROM mysql.time_zone_name; *if the count returns 0 , then the zone data will need to be loaded*

Type exist to leave mysql
at the prompt run
mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql **you may see some errors unable to load** these can be ignored

This will import the zone data from the system into mysql
Additional details: The mysql_tzinfo_to_sql utility reads your system’s time zone files and generates SQL statements from them. Using the pipe to send those SQL statements to the mysql client, it then processes those statements to load the data into the time zone tables.

now run

mysql> SELECT COUNT(*) FROM mysql.time_zone_name; * you should see a higher number indicating how zone records were imported into mysql *

log into mysql as the user
mysql -u username -p

run the set command to verify setting the time zone works as the user
mysql> SET SESSION time_zone = ‘US/Central’;
Query OK, 0 rows affected (0.20 sec)

The user does not need admin rights to the server to perform the SESSION time_zone option. They just need grant rights to their db.

reference
also Reference

If you have mysql installed locally on your pc , you can run the following query to import your data . *please note you should remove the first column which includes the columns titles. *

LOAD DATA local INFILE ‘C:\\wamp\\file.csv’ INTO TABLE bizdir.directoryFIELDS TERMINATED BY ‘,’ LINES TERMINATED BY ‘\r\n’ (col1,col2);

You will need to make some minor adjustments to the query above including the file name and location. Also the columns name to match the columns in the table you are importing into.  You can then export the data from your local mysql instance to a remote server.

127.0.0.1 localhost
#::1 localhost

**this seem to work only when connecting locally **

Thanks Bruce

Error: This means you are connecting to a mysql server using the new hash client while the server is setup to receive the old.

You will first need to make sure old-password is not enabled in my.cnf
old-password

You can just had a # in front of it to comment the settings. Restart the service and do
SET PASSWORD FOR ‘some_user’@'some_host’ = PASSWORD(‘newpwd’);

This will give you a 41 byte hash , you may want to re-enable the old-password option for legacy apps.

support authentication

Password Hashing in MySQL

This indicates that skip-innodb is enabled in the my.cnf file ..

ERROR 3 (HY000): Error writing file ‘/tmp/MY68ie0h’ (Errcode: 28)

this is due to a storage issue with the partition that is holding /tmp

You have two ways to fix this .

1) use a mysql_close() statement within your code. this is not needed for non-persistent connection per the PHP manual
PHP Manual

2) disallow persistent connection by turning it off within the php.ini file.

Persistent connection keeps the last connection active with mysql which goes into sleep mode.

Other errors you may see
Too many connections

Tools
Maakit

Nice script to run via shell

I’ve small handy shell script that removes all tables without dropping and creating MySQL database again.

#!/bin/bash
MUSER="$1"
MPASS="$2"
MDB="$3"

# Detect paths

MYSQL=$(which mysql)
AWK=$(which awk)
GREP=$(which grep)

if [ $# -ne 3 ]
then
	echo "Usage: $0 {MySQL-User-Name} {MySQL-User-Password} {MySQL-Database-Name}"

	echo "Drops all tables from a MySQL"
	exit 1
fi

TABLES=$($MYSQL -u $MUSER -p$MPASS $MDB -e 'show tables' | $AWK '{ print $1}' | $GREP -v '^Tables' )

for t in $TABLES
do
	echo "Deleting $t table from $MDB database..."
	$MYSQL -u $MUSER -p$MPASS $MDB -e "drop table $t"

done

Simply use above script as follows to empty a database called quiz with username tom and password jerry:

$ ./drop.table.sh tom jerry quiz

View the full script below

==============

#!/bin/bash
# A shell script to delete / drop all tables from MySQL database.
# Usage: ./script user password dbnane
# Usage: ./script user password dbnane server-ip
# Usage: ./script user password dbnane mysql.nixcraft.in
# -------------------------------------------------------------------------
# Copyright (c) 2008 nixCraft project <http://www.cyberciti.biz/fb/>

# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.

# ----------------------------------------------------------------------
# See URL for more info:
# http://www.cyberciti.biz/faq/how-do-i-empty-mysql-database/
# ---------------------------------------------------

MUSER="$1"

MPASS="$2"
MDB="$3"

MHOST="localhost"

[ "$4" != "" ] && MHOST="$4"

# Detect paths
MYSQL=$(which mysql)
AWK=$(which awk)
GREP=$(which grep)

# help
if [ ! $# -ge 3 ]
then
	echo "Usage: $0 {MySQL-User-Name} {MySQL-User-Password} {MySQL-Database-Name} [host-name]"

	echo "Drops all tables from a MySQL"
	exit 1
fi

# make sure we can connect to server

$MYSQL -u $MUSER -p$MPASS -h $MHOST -e "use $MDB"  &>/dev/null
if [ $? -ne 0 ]

then
	echo "Error - Cannot connect to mysql server using given username, password or database does not exits!"
	exit 2
fi

TABLES=$($MYSQL -u $MUSER -p$MPASS -h $MHOST $MDB -e 'show tables' | $AWK '{ print $1}' | $GREP -v '^Tables' )

# make sure tables exits
if [ "$TABLES" == "" ]
then
	echo "Error - No table found in $MDB database!"

	exit 3
fi

# let us do it
for t in $TABLES

do
	echo "Deleting $t table from $MDB database..."
	$MYSQL -u $MUSER -p$MPASS -h $MHOST $MDB -e "drop table $t"

done