Sybase数据库技术，数据库恢复专家

初始化数据设备1

disk init
name='pmdb_dat1',
physname='/export/home/sybdata/HUAWEIU2000/pmdb_dat1.dat',
size='8000m'
go

初始化日志设备1
disk init
name='pmdb_log1',
physname='/export/home/sybdata/HUAWEIU2000/pmdb_log1.dat',
size='8000m'
go

初始化数据设备2
disk init
name='pmdb_dat2',
physname='/export/home/sybdata/HUAWEIU2000/pmdb_dat2.dat',
size='16000m'
go

创建数据库pmdb
create database pmdb on pmdb_dat1='8000m',pmdb_dat2='16000m' log on pmdb_log1='8000m'
go

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添加job

use sybmgmtdb
go
sp_sjobcreate @name='jname=job_clear_log_of_pmdb',@option='jdesc=truncate the log of database pmdb every hour,jproperties=shared'
go

use sybmgmtdb
go
sp_sjobcmd @name='jname=job_clear_log_of_pmdb',@option='add',@text='
use pmdb
dump tran pmdb with no_log
go'
go

添加调度
use sybmgmtdb
go
sp_sjobcreate @name='sname=sche_clear_log_of_pmdb',@option='repeats=1hours,starttime=00:00,endtime=23:59'
go

添加预定作业

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在为数据库配置自动扩展时，提示需要增加参数：stack size的大小。

执行下面的SQL语句，使得用户数据库pmdb的default段的阈值为：1000m

sp_dbextend 'set','threshold',pmdb,'default','1000m'

go

但是返回下面的错误：

Msg 3626, Level 17, State 4:
Server 'syb1503', Procedure 'sp_exec_SQL', Line 49:
The transaction was aborted because it used too much stack space. Either use
sp_configure to increase the stack size, or break the query into smaller pieces.
spid: 27, suid: 1, hostname: LIUZHENFU, application name: isql
Msg 19206, Level 16, State 1:
Server 'syb1503', Procedure 'sp_exec_SQL', Line 53:
sp_dbxt_ins_db_seginfo: Execute immediate SQL failed. SQL statement is: insert
#syssegments(dbname, inserted_by, segment, name, status) select
'pmdb','sp_dbxt_set_extend_db', segment, name, status from pmdb.dbo.syssegments
(return status = 1)

那就按照提示做吧。 将stack size参数的大小配置为:130KB

sp_configure "stack size",130000
go

此参数：stack size是静态参数，需要重启ASE服务器。

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