#!/bin/bash
source ~/.bash_profile
export pdb_name=pdb #PDB名称
export ts_name=default_tbs #表空间
export inc_size_gb=1 #需要增加的GB数,单位G
#单次增长上限
inc_size_mb_threshold=$((32 * 1024))
inc_size_mb=(({inc_size_gb} * 1024))
pdb_name=(echo pdb_name | tr 'a-z' 'A-Z')
ts_name=(echo ts_name | tr 'a-z' 'A-Z')
echo PDB名:${pdb_name}
echo 表空间名: ${ts_name}
#该函数执行SQL
function exec_select(){
sqlplus -s '/as sysdba' <<EOF
set head off feedback off serveroutput on lines 1000
$1
quit;
EOF
}
function exec_ddl(){
sqlplus -s '/as sysdba' <<EOF
set head off feedback off serveroutput on
alter session set container=$1;
$2
quit;
EOF
}
db_role=(exec_select "select database_role from v\\database;")
echo 主备库角色:${db_role}
if ${db_role} != 'PRIMARY' ; then
echo 表空间扩容需要在主库执行
exit 1
fi
pdb_exist=(exec_select "select count(\*) from CDB_PDBS where pdb_name = '{pdb_name}';")
if $pdb_exist -ne 1 ; then
echo 目标PDB不存在
exit 1
fi
bigfile_ts=(exec_select "SELECT bigfile FROM CDB_PDBS d join cdb_tablespaces t on d.con_id = t.con_id WHERE d.pdb_name = '{pdb_name}' and t.tablespace_name = '${ts_name}';")
if ! $bigfile_ts ; then
echo PDB{pdb_name}下{ts_name}表空间不存在
exit 1
fi
文件尺寸上限
file_size_mb_limit=$((32 * 1024 - 100))
if $bigfile_ts = 'YES' ; then
echo "big file tablespace"
file_size_mb_limit=$((32 * 1024 * 1024 - 512))
else
echo "normal tablespace"
fi
data_file_info=(exec_select "SELECT \* FROM (SELECT f.file_name, ROUND(f.bytes/1024/1024,5) size_mb, ROUND(f.maxbytes/1024/1024,5) max_size_mb,f.autoextensible FROM CDB_DATA_FILES f join CDB_PDBS d on f.con_id = d.con_id WHERE d.pdb_name ='{pdb_name}' and f.tablespace_name = '${ts_name}' order by max_size_mb) where rownum = 1;")
file_name=(echo {data_file_info} | awk '{ print $1 }')
file_size_mb=(echo {data_file_info} | awk '{ print $2 }' | tr '.' '0.')
file_max_size_mb=(echo {data_file_info} | awk '{ print $3 }' | tr '.' '0.' )
file_autoextensible=(echo {data_file_info} awk '{ print $4 }')
echo 数据文件${file_name}
echo 文件当前尺寸${file_size_mb}MB
echo 文件可扩展:$file_autoextensible
echo 文件自增最大尺寸:${file_max_size_mb}MB
增长后的新文件尺寸
new_file_size_mb=( echo {file_size_mb} + ${inc_size_mb} | bc)
if ${new_file_size_mb} -gt ${file_size_mb_limit} ; then
echo 超出数据文件最大限制${file_size_mb_limit}MB
exit 1
fi
所属ASM磁盘组组名
asm_disk_group=(echo file_name | awk -F '/' '{ print $1 }')
asm_disk_group=${asm_disk_group/+/}
统计ASM磁盘空间
asm_dg_info=(exec_select "SELECT free_mb,total_mb FROM V\\asm_diskgroup_stat WHERE name = '${asm_disk_group}';")
asm_dg_free_mb=(echo {asm_dg_info} | awk '{ print $1 }')
asm_dg_total_mb=(echo {asm_dg_info} | awk '{ print $2 }')
fix_asm_dg_free_mb=(echo "{asm_dg_total_mb} * 0.95 - ({asm_dg_total_mb} - {asm_dg_free_mb})" | bc | awk -F "." '{ print $1 }')
if ${inc_size_mb} -gt ${fix_asm_dg_free_mb} ; then
echo {asm_disk_group}磁盘组剩余{asm_dg_free_mb}MB. 要预留5%的空间，最多能扩展${fix_asm_dg_free_mb}MB
exit 1
fi
新文件尺寸超过文件自增最多尺寸的话，先调整文件最大尺寸
if ${new_file_size_mb} -gt ${file_max_size_mb} ; then
echo "ALTER DATABASE DATAFILE '{file_name}' AUTOEXTEND on MAXSIZE {new_file_size_mb}M;"
exec_ddl {pdb_name} "ALTER DATABASE DATAFILE '{file_name}' AUTOEXTEND on MAXSIZE ${new_file_size_mb}M;"
fi
echo "ALTER DATABASE DATAFILE '{file_name}' resize {new_file_size_mb}M;"
exec_ddl {pdb_name} "ALTER DATABASE DATAFILE '{file_name}' RESIZE ${new_file_size_mb}M;"
echo 操作完成
new_ts_size_mb=(exec_select "SELECT ROUND(sum(f.bytes)/1024/1024) size_mb FROM CDB_DATA_FILES f join CDB_PDBS d on f.con_id = d.con_id WHERE d.pdb_name = '{pdb_name}' and f.tablespace_name = '${ts_name}';")
segment_total_mb=(exec_select "SELECT ROUND(sum(s.bytes)/1024/1024) size_mb FROM cdb_segments s join CDB_PDBS d on s.con_id = d.con_id WHERE d.pdb_name = '{pdb_name}' and s.tablespace_name = '${ts_name}';")
new_ts_free_size_mb=(echo {new_ts_size_mb} - ${segment_total_mb} | bc)
echo 新表空间尺寸{new_ts_size_mb}MB,空闲空间{new_ts_free_size_mb}MB
new_asm_dg_free_mb=(exec_select "SELECT free_mb FROM V\\asm_diskgroup_stat WHERE name = '${asm_disk_group}';")
echo {asm_disk_group}磁盘组最新剩余{new_asm_dg_free_mb}MB
=========================打印正常内容如下=============================
oracle@racdb1:/home/oracle>sh add_tbs.sh
PDB名:PDB
表空间名: DEFAULT_TBS
主备库角色: PRIMARY
normal tablespace
数据文件+DATADG/YQBDB/FA8C41145AA66161E0530AC5A8C04C82/DATAFILE/default_tbs.286.1148745207
文件当前尺寸100MB
文件可扩展:+DATADG/YQBDB/FA8C41145AA66161E0530AC5A8C04C82/DATAFILE/default_tbs.286.1148745207 100 3072 YES awk { print $4 }
文件自增最大尺寸:3072MB
ALTER DATABASE DATAFILE '+DATADG/YQBDB/FA8C41145AA66161E0530AC5A8C04C82/DATAFILE/default_tbs.286.1148745207' resize 1124M;
操作完成
新表空间尺寸 1124MB,空闲空间330MB
DATADG磁盘组最新剩余 688MB
oracle@racdb1:/home/oracle>