SQL1036C An I/O error occurred while accessing the database.
SQLSTATE=58030
Explanation:

The problem may have occurred in one of the following situations:

* The system cannot open, read from, or write to a database file.
* The system cannot create the database because an error occurred while
the system was creating a database file or a directory for the
database.
* The system cannot drop the database because an error occurred while
the system was deleting a database file or a directory for the
database.
* The system cannot create the database because an interrupt was
received while the system was creating or deleting a database file or
a directory for the database.
* The system cannot locate the database subdirectory or database
configuration file during connect.

Problem causes are ordered in terms of their frequency of occurrence:

* A log file cannot be found in the active log path directory.
* There may be a problem with the database directory the operation is
being attempted on.
* There may be inadequate disk space to complete the operation.

The database cannot be used.

User response:

Appropriate responses for the problem causes described above are:

* To verify if a log file is missing, check the db2diag log file for
the presence of a logging error (return code contains SQLO_FNEX). If
present, this error will contain the name of the missing log file.
Ensure that the file is located in the active log path directory. If
the file cannot be located, restore and roll-forward the database to
an earlier point in time referenced in a log file preceding the
missing log file (use a timestamp that is earlier than that of the
missing file).
* There may be a problem with the database directory. Check the
integrity of the directory. Examples of potential problems include:
permissions issues, mount point problems, corruption.
* Increase filesystem size.

NOTE: If the error occurred during CREATE DATABASE or DROP DATABASE, a
subsequent CREATE DATABASE or DROP DATABASE command attempts to erase
files and directories left from the unsuccessful CREATE DATABASE or DROP
DATABASE command.

sqlcode: -1036

sqlstate: 58030

SQL1005N The database alias "DAT5" already exists in either the local
database directory or system database directory.13:19
подробности:
в папке D:\DB2\NODE0000 отсутствует каталог этой базы, нам нужно её грохнуть и восстановить из бэкапа.
удалить не получается с той ошибкой в 13:26
2015-03-16-13.37.12.947000+180 I265882F670 LEVEL: Error
PID : 4836 TID : 8048 PROC : db2syscs.exe
INSTANCE: DB2 NODE : 000 DB : DAT5
APPHDL : 0-6686 APPID: 192.168.121.137.34978.150316103709
AUTHID : ******
EDUID : 8048 EDUNAME: db2agent (DAT5) 0
FUNCTION: DB2 UDB, config/install, sqlf_read_db_and_verify, probe:738
MESSAGE : ZRC=0x860F000A=-2045837302=SQLO_FNEX "File not found."
DIA8411C A file "" could not be found.
DATA #1 : String, 39 bytes
SQL5005: Error opening old config file
DATA #2 : String, 33 bytes
D:\DB2\NODE0000\SQL00008\SQLDBCON

2015-03-16-13.37.12.947000+180 I266554F529 LEVEL: Error
PID : 4836 TID : 8048 PROC : db2syscs.exe
INSTANCE: DB2 NODE : 000 DB : DAT5
APPHDL : 0-6686 APPID: 192.168.121.137.34978.150316103709
AUTHID : *****
EDUID : 8048 EDUNAME: db2agent (DAT5) 0
FUNCTION: DB2 UDB, config/install, sqlf_read_db_and_verify, probe:742
MESSAGE : ZRC=0xFFFFEC73=-5005
DATA #1 : String, 45 bytes
Error while reading and verifying config file13:39
D:\DB2\NODE0000\SQL00008 - папка отсутствует 13:40