Re: Data access Utility DUL

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What is Oracle sos tools?
Oracle sos tools is one of the most professional team of Oracle database recovery in China. We have in-depth understanding of Oracle's internal mechanisms, specialize in conventional and unconventional methods to the case of Oracle recovery. If your database is corrupted, in the absence of backup or valid backup, we may be your last chance.

What is sos tools?
The full name of sos tools is Oracle Database Unloader, a tool developed by Oracle sos tools. Similar to DUL (a famous Oracle database recovery utility), sos tools can unload data from a complete crashed or corrupted database, even if the database cannot be started anymore or the database itself cannot access the data for whatever reason. We have used it in several real life situations already (customers with a crashed database and no backup), with 100% success rate. In some real cases, DUL can not unload all the important data, but sos tools can.

The main features of sos tools are as follows:

?Bypass Oracle's database engine, extracting data directly at the block level.
?Supports ASM - sos tools can unload data directly from ASM disks even all the diskgroups are dismounted.
?Supports extract files of any type directly from ASM disks even all the diskgroups are dismounted, including datafile, redo log, archive log, etc.
?In severe ASM disk corruption cases (for example, file directory is totally corrupted), sos tools can scan ASM disks, extract all the datafiles which are not overwritten, and then recover all the data.
?Supports Oracle RDBMS versions 7, 8i, 9i, 10g, 11g and 12c.
?Supports multiple database platforms, including AIX, LINUX, HPUX, SOLARIS, WINDOWS and so on. Supports cross-platform unloading, for example unloading AIX based datafiles on a Windows host.
?Supported data types: NUMBER, CHAR, VARCHAR2, NCHAR, NVARHCAR2, LONG, DATE, RAW, LONG RAW, BLOB, CLOB, TIMESTAMP (9i +), BINARY FLOAT, BINARY DOUBLE (10g +).
?Fully support LOB:
?Supports CLOB, NCLOB and BLOB
?Supports CLOB big endian and little endian byte order
?Supports partitioned and subpartioned LOBs
?Supports different chunk sizes of different LOB columns in the same table
?CLOB data can be exported to the same file with other columns, or stored in a separate file
?LOBs are still be able to export even the SYSTEM tablespace is not available
?LOBs are still be able to export even the associated lob index is corrupted
?Supports recover SecureFile LOB in Oracle 11g and above versions (currently does not support compression, deduplication and encryption SecureFile LOB)
?Supports various types of tables, including ordinary HEAP table, IOT table, CLUSTER table.
?Supports IOT, supported IOT types are:
?Ordinary IOT
?Compressed IOT
?IOT with overflow segments
?Partitioned and subpartitioned IOT
?IOT's are only supported when SYSTEM is available
?Supports compressed table.
?Supports data recovery after truncate table.
?Supports data recovery after drop table.
?Automatic acquisition of data dictionary information if SYSTEM tablespace is not totally corrupted.
?Supports data recovery in the absence of SYSTEM tablespace and data dictionary corruption. If data dictionary is not available, sos tools can automatically determine the data type of a data column.
?Supports BigFile tablespace in Oracle 10g and above.
?Fully support for 64-bit systems, supports more than 4G size of the datafiles.
?Supports bad file copy even the operating system command (for example, cp) can not copy successfully.
?Supports different block size of datafiles in the same database.
?Supports conversion between various character sets, can convert CLOB, NCLOB, NVARCHAR2 column type of data to the specified character set correctly.
?Auto detection of tablespace number, file number and block size of datafiles.
?Export data formats including both plain text and DMP file. When exporting to plain text, sos tools can generate the necessary sql statements for creating table and control file used for SQL*Loader automatically.
?Simulated dump block function of the Oracle, can dump data blocks from datafiles.
?Supports DESC command to a table to display the column definition.
?Supports list all table partitions and subpartions.
?Supports recover accidentally deleted data, even if the table where the data is deleted has LOB columns, even if all the deleted rows' offsets in corresponding row directory are completely cleared by Oracle.
Received on Wed Sep 02 2015 - 15:53:01 CEST