Log file table configuration in Oracle

Production Mapping ライセンスで利用できます。

エンタープライズ ジオデータベースは、ログ ファイル テーブルを使用して、選択されたレコードのリストを管理します。特定サイズのレコードが選択されたか、バージョン対応のデータベースでリコンサイルまたはポストが実行されたか、またはクライアント アプリケーションでディスコネクト編集のチェックアウトが実行されたとき、後でアプリケーションが使用できるようにレコードをログ ファイル テーブルに書き込みます。ログ ファイル テーブルには選択されたフィーチャの ObjectID が格納されるため、それらを再表示することが可能です。これにより、情報の解析や処理がより高速になります。

ArcGIS でログ ファイル テーブルが使用されるのは、デフォルトでは、選択セットのレコードの数が 100 以上の場合です。この 100 個の選択フィーチャという閾値は、レジストリに設定されます。この閾値を変更できますが、変更は推奨されません。パフォーマンス上の理由から閾値を変更する必要はなく、変更することでかえってパフォーマンスを低下させることもあります。

Log file tables store feature selections in ArcMap that are greater than 100 for each connected geodatabases editor/viewer user. It is recommended that you store the log file tables in a separate tablespace; this can be achieved with the DBTUNE table.

Geodatabases in Oracle use shared log file tables by default. If the connecting user does not have privileges to create tables or sequences in the database, the log file table will be created as a global temporary table owned by the geodatabase administrator. In most cases, this should be sufficient, but you can change log file table settings using the Configure Geodatabase Log File Tables geoprocessing tool.

Creating log file tablespaces

Use the following statement to create log file tablespaces in Oracle.

CREATE SMALLFILE TABLESPACE gdblogfile
DATAFILE 'D:\oracle\ORADATA\PRODLIBDB\GDB\gdblogfile01.dbf' SIZE 10M AUTOEXTEND ON NEXT 1M MAXSIZE 100M
LOGGING EXTENT MANAGEMENT LOCAL UNIFORM SIZE 512K 
SEGMENT SPACE MANAGEMENT AUTO
DEFAULT COMPRESS FOR OLTP STORAGE ( ENCRYPT ) ENCRYPTION USING 'AES256';

CREATE SMALLFILE TABLESPACE gdblogfileidx
DATAFILE 'D:\oracle\ORADATA\PRODLIBDB\GDB\gdblogfileidx01.dbf' SIZE 10M AUTOEXTEND ON NEXT 1M MAXSIZE 100M
LOGGING EXTENT MANAGEMENT LOCAL UNIFORM SIZE 512K 
SEGMENT SPACE MANAGEMENT AUTO
DEFAULT COMPRESS FOR OLTP STORAGE ( ENCRYPT ) ENCRYPTION USING 'AES256';

Changing DBTUNE log file parameters

After creating the data files, modify the DBTUNE table to include a new configuration keyword. Based on this new keyword, the data and database objects will be stored in the tablespaces location that was previously defined. The DBTUNE table is stored in the geodatabase in Oracle. To modify the DBTUNE table, it's necessary to export the DBTUNE table into a text file and make modifications in the text file. After the updates to the text file are made, import the new DBTUNE table from the text file.

1. Export the dbtune file before making any modifications.
   1. Start ArcCatalog.

      ヒント:

      You can also export using ArcMap.

   2. Click the ArcToolbox button on the Standard toolbar.
   3. Expand Data Management Tools > Geodatabase Administration..
   4. Double-click Export Geodatabase Configuration Keywords.

      The Export Geodatabase Configuration Keywords dialog box appears.

   5. Click the browse folder for the Input Database Connection parameter and browse to the connection file for the enterprise geodatabase you want to export.
   6. Click the browse folder for the Output File parameter and browse to the path where the file will be exported.
   7. Name the file dbtune_exp.txt and click Save.
   8. Click OK on the Export Geodatabase Configuration Keywords dialog box.
2. Modify the dbtune_logfile.txt ##LOGFILE_DEFAULTS configuration keyword in a text editor.

   ##LOGFILE_DEFAULTS
   LD_INDEX_DATA_ID	"PCTFREE 0 INITRANS 4 TABLESPACE GDBLOGFILEIDX NOLOGGING "
   LF_INDEXES	"PCTFREE 0 INITRANS 4 TABLESPACE GDBLOGFILEIDX NOLOGGING "
   LF_STORAGE	"PCTFREE 0 INITRANS 4 TABLESPACE GDBLOGFILE"
   SESSION_INDEX	"PCTFREE 0 INITRANS 4 TABLESPACE GDBLOGFILEIDX NOLOGGING "
   SESSION_TEMP_TABLE	0
   SESSION_STORAGE	"PCTFREE 0 INITRANS 4 TABLESPACE GDBLOGFILE"
   LD_STORAGE	"PCTFREE 0 INITRANS 4 TABLESPACE GDBLOGFILE "
   LD_INDEX_ROWID	"PCTFREE 0 INITRANS 4 TABLE PACE GDBLOGFILEIDX NOLOGGING "
   END
   

3. Import the modified dbtune_logfile.txt file using ArcCatalog or ArcMap.
   1. In ArcToolbox, expand Data Management Tools > Geodatabase Administration.
   2. Double-click Geodatabase Configuration Keywords.

      The Import Geodatabase Configuration Keywords dialog box appears.

   3. Click the browse button next to the Input Database Connection parameter and browse to the enterprise geodatabase you want to import.
   4. Click the browse button for the Input File parameter and browse to the path where the file will be imported.
   5. Name the file dbtune_logfile.txt and click Open.
   6. Click OK on the Import Geodatabase Configuration Keywords dialog box.

Creating log file tables

The geodatabase log file tables can be created in ArcMap by performing a large selection.

1. Grant QUOTA permissions in OEM to the users on GDBLOGFILE and GDBLOGFILEIDX.

   ALTER USER SDE QUOTA UNLIMITED ON "GDBLOGFILE";
   ALTER USER SDE QUOTA UNLIMITED ON "GDBLOGFILEIDX";
   
   ALTER USER PRODLIB QUOTA UNLIMITED ON "GDBLOGFILE";
   ALTER USER PRODLIB QUOTA UNLIMITED ON "GDBLOGFILEIDX";
   
   ALTER USER PRODLIBUSER QUOTA UNLIMITED ON "GDBLOGFILE";
   ALTER USER PRODLIBUSER QUOTA UNLIMITED ON "GDBLOGFILEIDX";
   

2. Grant CREATE TABLE permissions for the geodatabase editor/viewer user.
3. Start ArcMap.
4. Select more than 100 features.

   This automatically creates the log file tables.

Learn more about altering log files
5. Remove CREATE TABLE permissions as appropriate.

See the following Technical Support articles to learn more about how to create the ArcSDE log file tables as global temporary tables in Oracle and about log file table options for geodatabases in Oracle.