The SAP HANA Academy has published a new video in the series SAP HANA SPS 7 Backup and Recovery.
Backup and Recovery - Backup Configuration Files | SAP HANA
In this video you can view how to generate the ALTER SYSTEM ALTER CONFIGURATION statement for changed parameters.
The SQL file is attached to this document.
Syntax
select 'ALTER SYSTEM ALTER CONFIGURATION ('''|| file_name ||''', '''|| case layer_name when 'SYSTEM' then layer_name when 'HOST' then layer_name ||''', '''|| host end || ''') SET ('''|| section ||''', '''|| key ||''') = '''||value ||''' WITH RECONFIGURE;' as "Configuration File Backup" from m_inifile_contents
where layer_name != 'DEFAULT'
We also show a simple sample backup script that copies HOST and SID configuration files.
The backup.sh file is attached to this document.
#!/bin/bash
# Simple sample backup script
# SAP HANA Academy
# http://academy.saphana.com
# Twitter: @saphanaacademy
# define backup prefix
TIMESTAMP="$(date +\%F\_%H\%M)"
BACKUP_PREFIX="SCHEDULED"
BACKUP_PREFIX="$BACKUP_PREFIX"_"$TIMESTAMP"
# source HANA environment
. /usr/sap/shared/DB1/HDB01/hdbenv.sh
# execute command with user key
# asynchronous runs job in background and returns prompt
hdbsql -U backup "backup data using file ('$BACKUP_PREFIX') ASYNCHRONOUS"
# create backup directory
BACKUP_DIR="$DIR_INSTANCE/backup"
BACKUP_DIR="$BACKUP_DIR"/INIFILE/"$TIMESTAMP"
SYS_BACKUP_DIR="$BACKUP_DIR/$SAPSYSTEMNAME"
HOST_BACKUP_DIR="$BACKUP_DIR/$VTHOSTNAME"
mkdir -p $BACKUP_DIR $SYS_BACKUP_DIR $HOST_BACKUP_DIR
# copy host configuration files
HOST_INI_DIR="$DIR_INSTANCE/$VTHOSTNAME"
cp $HOST_INI_DIR/*.ini $HOST_BACKUP_DIR
# copy system configuration files
SYS_INI_DIR="$DIR_INSTANCE"
SYS_INI_DIR="$(dirname "$SYS_INI_DIR")"
SYS_INI_DIR="$SYS_INI_DIR/SYS/global/hdb/custom/config"
cp $SYS_INI_DIR/*.ini $SYS_BACKUP_DIR
cp $SYS_INI_DIR/hdbconfiguration_* $SYS_BACKUP_DIR
Finally, we briefly discuss the SAP HANA hdbparam tool, which - for as far as I know - has not yet been documented.
SAP HANA Academy
Denys van Kempen
