怎么才能实现真正的ArcGIS版本压缩（Compress）

其实我在今年的开发者大会中专门对ArcGIS版本压缩做了一个详细的说明。为什么专门来说这个呢？其实现在对ArcGIS用户来说，他们在使用多用户版本操作时，发现性能慢一般都知道进行ArcGIS版本压缩，但是他们往往做的就是Compress操作，这样做是远远不够的，因为什么都不管只进行compress操作，不能彻底的进行压缩，也就是压缩的不彻底， 那么标准的ArcGIS版本压缩流程是什么样的呢？

首先说明，理想的版本压缩后是什么样子的

1：不能出错。（这像是废话）

2：增量表的数据为空

3：状态表和族系表一条记录也就是State_ID=0

相关的压缩流程，使用专门的管理员用户

1：断开其他所有用户的连接，阻止其他新用户连接

2：相关的子版本进行协调和提交

Python实现批量执行ArcGIS版本的协调和提交

http://blog.csdn.net/linghe301/article/details/7777816

3：数据备份（这个和2可以互换顺序）

关于ArcGIS数据迁移方案的策略(备份也可以参考）

http://blog.csdn.net/linghe301/article/details/6330759

4：删除相关子版本（注意如果使用过同步复制，注意相关的隐藏子版本）

5：删除相关的锁信息

 以oracle 数据库为例sde用户下

• state_locks
• table_locks
• object_locks
• layer_locks

ArcGIS锁的介绍

http://blog.csdn.net/linghe301/article/details/7345194

6：进行版本压缩

ArcGIS版本压缩（Compress）报ORA-00001: unique constraint 的解决方法
http://blog.csdn.net/linghe301/article/details/7331992
ArcSDE版本压缩之前对UNDO表空间的设置
http://blog.csdn.net/linghe301/article/details/7335530

关于ArcSDE版本压缩（Compress）的再研究

http://blog.csdn.net/linghe301/article/details/6399036

7：创建子版本

一种快速批量创建子版本的方法

http://blog.csdn.net/linghe301/article/details/7329531

8：重建空间索引

 怎么对ArcSDE数据库的要素类进行批量重建空间索引

http://blog.csdn.net/linghe301/article/details/7720871

9：进行统计分析

10：允许其他新用户连接

那么真正的压缩只有这样才能彻底压缩干净。

那么我们也可以使用python进行这样的操作，我没有经这些环节搞成一个现成可以用的脚本，以下的脚本文件仅供参考

import arcpy, time, smtplib

# set the workspace 
arcpy.env.workspace = 'Database Connections/admin.sde'

# set a variable for the workspace
workspace = arcpy.env.workspace

# get a list of connected users.
userList = arcpy.ListUsers("Database Connections/admin.sde")

# get a list of usernames of users currently connected and make email addresses
emailList = [u.Name + "@yourcompany.com" for user in arcpy.ListUsers("Database Connections/admin.sde")]

# take the email list and use it to send an email to connected users.
SERVER = "mailserver.yourcompany.com"
FROM = "SDE Admin "
TO = emailList
SUBJECT = "Maintenance is about to be performed"
MSG = "Auto generated Message.\n\rServer maintenance will be performed in 15 minutes. Please log off."

# Prepare actual message
MESSAGE = """\
From: %s
To: %s
Subject: %s

%s
""" % (FROM, ", ".join(TO), SUBJECT, MSG)

# Send the mail
server = smtplib.SMTP(SERVER)
server.sendmail(FROM, TO, MESSAGE)
server.quit()

#block new connections to the database.
arcpy.AcceptConnections('Database Connections/admin.sde', False)

# wait 15 minutes
time.sleep(900)

#disconnect all users from the database.
arcpy.DisconnectUser('Database Connections/admin.sde', "ALL")

# Get a list of versions to pass into the ReconcileVersions tool.
versionList = arcpy.ListVersions('Database Connections/admin.sde')

# Execute the ReconcileVersions tool.
arcpy.ReconcileVersions_management('Database Connections/admin.sde', "ALL_VERSIONS", "sde.DEFAULT", versionList, "LOCK_ACQUIRED", "NO_ABORT", "BY_OBJECT", "FAVOR_TARGET_VERSION", "POST", "DELETE_VERSION", "c:/temp/reconcilelog.txt")

# Run the compress tool. 
arcpy.Compress_management('Database Connections/admin.sde')

#Allow the database to begin accepting connections again
arcpy.AcceptConnections('Database Connections/admin.sde', True)

#Get a list of datasets owned by the admin user

# Get the user name for the workspace
# this assumes you are using database authentication.
# OS authentication connection files do not have a 'user' property.
userName = arcpy.Describe(arcpy.env.workspace).connectionProperties.user

# Get a list of all the datasets the user has access to.
# First, get all the stand alone tables, feature classes and rasters.
dataList = arcpy.ListTables('*.' + userName + '.*') + arcpy.ListFeatureClasses('*.' + userName + '.*') + arcpy.ListRasters('*.' + userName + '.*')

# Next, for feature datasets get all of the featureclasses
# from the list and add them to the master list.
for dataset in arcpy.ListDatasets('*.' + userName + '.*'):
    dataList += arcpy.ListFeatureClasses(feature_dataset=dataset)

# pass in the list of datasets owned by the admin to the rebuild indexes and analyze datasets tools
# Note: to use the "SYSTEM" option the user must be an administrator.
arcpy.RebuildIndexes_management(workspace, "SYSTEM", dataList, "ALL")

arcpy.AnalyzeDatasets_management(workspace, "SYSTEM", dataList, "ANALYZE_BASE", "ANALYZE_DELTA", "ANALYZE_ARCHIVE")

以下的压缩代码仅供参考，适用于ArcGIS9.2/9.3

# This script is designed to compress an SDE Geodatabase and then
# loop through and analyze the statistics ofeach feature dataset, feature class and table.
# It is designed to log the entire process to a text file and
# if there are any errors during the process the script will email a specified address.
# Created by Mike Long - [email protected]
# Last Modified on 7/16/09

# Import system, Geoprocessing, time and email modules
import sys, string, os, arcgisscripting, time, smtplib

# Set the date.
Date = time.strftime("%m-%d-%Y", time.localtime())

# Set the time.
Time = time.strftime("%I:%M:%S %p", time.localtime())

# Create the Geoprocessor object
gp = arcgisscripting.create()

gp.CheckProduct("ArcEditor") # Checks the license level.
	
gp.SetProduct("arceditor") # Sets the license level.

print "Process started at " + str(Date) + " " + str(Time) + "." + "\n"

# Set up the log file.
LogFile = file('C:\\PythonScripts\\Analyze\\GIS-' + Date + '.txt', 'w') #Creates a log file with todays date.
output = open('C:\\PythonScripts\\Analyze\\GIS-' + Date + '.txt', 'w') #Path to log file.
output.write(str("Process started at " + str(Date) + " " + str(Time) + "." + "\n")) # Write the start time to the log file.


# Load required toolboxes  (This shouldn't need to be changed unless ArcGIS was
#                           installed to a different location)
gp.AddToolbox("F:/Program Files/ArcGIS/ArcToolbox/Toolboxes/Data Management Tools.tbx")

try:
    # Compress the database
    print "Begining Compress..." + "\n"
    gp.toolbox = "management"
    # For this script to work it will need the full path to the .sde connection file.
    gp.compress("C:\\Documents and Settings\\mlong\\Application Data\\ESRI\\ArcCatalog\\[email protected]")
    print gp.GetMessages() + "\n"
    output.write(gp.GetMessages()+ "\n")

except:
    #Sets up the email parameters

    From = "Geoprocessor"
    To = ["[email protected]"] # This is the email address that will receive any errors.
    Date = time.ctime(time.time())
    Subject = "Error Compressing the GIS Database" 
    Text = gp.GetMessages()

    #Format mail message
    mMessage = ('From: %s\nTo: %s\nDate: %s\nSubject: %s\n%s\n' %
                (From, To, Date, Subject, Text))
    print 'Connecting to Server'
    s = smtplib.SMTP('machinename.domainname.com') # This needs to be set to your email server.

    #Send Email
    rCode = s.sendmail(From, To, mMessage)
    s.quit()

    if rCode:
        print 'Error Sending Message'
    else:
        print 'Message sent sucessfully'

analyzeworkspace = "C:\\Documents and Settings\\mlong\\Application Data\\ESRI\\ArcCatalog\\Model Connection.sde"

try:
    # Loop through and analyze all Feature datasets
    gp.Workspace = analyzeworkspace
    FCList = gp.ListFeatureClasses ("*", "all")
    FC = FCList.Next()
    while FC:
        gp.Analyze_management(FC, "BUSINESS;FEATURE;ADDS;DELETES")
        print gp.GetMessages() + "\n"
        output.write(gp.GetMessages()+ "\n")
        FC = FCList.Next()
    # Loop through and analyze all the Feature classes
    gp.Workspace = analyzeworkspace
    FDList = gp.ListDatasets ("*", "all")
    FD = FDList.Next()
    while FD:
        gp.Analyze_management(FD, "BUSINESS;FEATURE;ADDS;DELETES")
        print gp.GetMessages() + "\n"
        output.write(gp.GetMessages())
        FD = FDList.Next()
    # Loop through and analyze all the Tables.
    # The if-else statements set the script to skip over Multi-Versioned Views.
    gp.Workspace = analyzeworkspace
    TBList = gp.ListTables ("*", "all")
    TB = TBList.Next()
    while TB:
        if '_MVVIEW' in TB:
            print "Skipping Multi-Versioned View"
        elif '_MVView' in TB:
            print "Skipping Multi-Versioned View"
        else:
            gp.Analyze_management(TB, "BUSINESS;FEATURE;ADDS;DELETES")
            print gp.GetMessages() + "\n"
            output.write(gp.GetMessages())
        TB = TBList.Next()

except:
    print gp.GetMessages()
    output.write(gp.GetMessages())

    #Sets up the email parameters

    From = "Geoprocessor"
    To = ["[email protected]"]
    Date = time.ctime(time.time())
    Subject = "Error Analyzing the GIS Database"
    Text = gp.GetMessages()

    #Format mail message
    mMessage = ('From: %s\nTo: %s\nDate: %s\nSubject: %s\n%s\n' %
                (From, To, Date, Subject, Text))
    print 'Connecting to Server'
    s = smtplib.SMTP('machinename.domainname.com')

    #Send Email
    rCode = s.sendmail(From, To, mMessage)
    s.quit()

    if rCode:
        print 'Error Sending Message'
    else:
        print 'Message sent sucessfully'

# Sets the Date & Time since the script started.
Date = time.strftime("%m-%d-%Y", time.localtime())# Set the date.
Time = time.strftime("%I:%M:%S %p", time.localtime()) # Set the time.
output.write(str("Process completed at " + str(Date) + " " + str(Time) + "." + "\n")) # Write the start time to the log file.

output.close() # Closes the log file.

print "Process completed at " + str(Date) + " " + str(Time) + "."

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