An example with IBM DB2 DBMS

Figure 5.2. Deploy model of an example with IBM DB2 DBMS

Deploy model of an example with IBM DB2 DBMS

This example was developed using DB2 Express-C 9.7 for Linux (Ubuntu). If you were using a different version you would need to adapt some commands to your environment.

Note

If you did not yet installed the software provided by IBM, please refer to the official IBM site to download the software and to pick-up the information necessary to install and configure the database. This manual does not give you information related to IBM DB2 technology: it is assumed you already installed and configured the database.

Important

The LIXA software must be configured to support the IBM DB2 server resource manager as explained in the section called “Linking third party resource managers”.

Set-up DB2 environment

Start-up the DB2 server

If your server didn't start-up automatically at boot time, you could start it with the following commands:

tiian@ubuntu:~$ ps -ef | grep db2 | grep -v grep
tiian@ubuntu:~$ sudo /etc/init.d/db2exc start
  * Starting DAS:                       done.
  * Instance db2inst1 ( db2c_db2inst1 ):        done.
  * Activating database SAMPLE          done.
tiian@ubuntu:~$ ps -ef | grep db2 | grep -v grep
dasusr1  22959     1  0 10:54 pts/2    00:00:00 /home/dasusr1/das/adm/db2dasrrm
root     23190     1  2 10:54 pts/2    00:00:00 db2wdog                         
db2inst1 23192 23190  4 10:54 pts/2    00:00:01 db2sysc                         
root     23193 23192  0 10:54 pts/2    00:00:00 db2ckpwd                        
root     23194 23192  0 10:54 pts/2    00:00:00 db2ckpwd                        
root     23195 23192  0 10:54 pts/2    00:00:00 db2ckpwd                        
db2inst1 23206 23190  2 10:54 pts/2    00:00:00 db2acd   ,0,0,0,1,0,0,0,1,0,8a6614,14,1e014,2,0,1,11fd0,0x12600000,0x12600000,1600000,740002,2,a0800d
	  

Switch to user db2inst1, try to connect to database SAMPLE:

tiian@ubuntu:~$ sudo su - db2inst1
db2inst1@ubuntu:~$ db2
(c) Copyright IBM Corporation 1993,2007
Command Line Processor for DB2 Client 9.7.1

You can issue database manager commands and SQL statements from the command
prompt. For example:
    db2 => connect to sample
    db2 => bind sample.bnd

For general help, type: ?.
For command help, type: ? command, where command can be
the first few keywords of a database manager command. For example:
 ? CATALOG DATABASE for help on the CATALOG DATABASE command
 ? CATALOG          for help on all of the CATALOG commands.

To exit db2 interactive mode, type QUIT at the command prompt. Outside
interactive mode, all commands must be prefixed with 'db2'.
To list the current command option settings, type LIST COMMAND OPTIONS.

For more detailed help, refer to the Online Reference Manual.

db2 => connect to sample

   Database Connection Information

 Database server        = DB2/LINUX 9.7.1
 SQL authorization ID   = DB2INST1
 Local database alias   = SAMPLE

	  

Check the tables ORG and DEPT exist and contain some data:

db2 => select * from ORG

DEPTNUMB DEPTNAME       MANAGER DIVISION   LOCATION
-------- -------------- ------- ---------- -------------
      10 Head Office        160 Corporate  New York
      15 New England         50 Eastern    Boston
      20 Mid Atlantic        10 Eastern    Washington
      38 South Atlantic      30 Eastern    Atlanta
      42 Great Lakes        100 Midwest    Chicago
      51 Plains             140 Midwest    Dallas
      66 Pacific            270 Western    San Francisco
      84 Mountain           290 Western    Denver

  8 record(s) selected.

db2 => select * from DEPT

DEPTNO DEPTNAME                             MGRNO  ADMRDEPT LOCATION
------ ------------------------------------ ------ -------- ----------------
A00    SPIFFY COMPUTER SERVICE DIV.         000010 A00      -
B01    PLANNING                             000020 A00      -
C01    INFORMATION CENTER                   000030 A00      -
D01    DEVELOPMENT CENTER                   -      A00      -
D11    MANUFACTURING SYSTEMS                000060 D01      -
D21    ADMINISTRATION SYSTEMS               000070 D01      -
E01    SUPPORT SERVICES                     000050 A00      -
E11    OPERATIONS                           000090 E01      -
E21    SOFTWARE SUPPORT                     000100 E01      -
F22    BRANCH OFFICE F2                     -      E01      -
G22    BRANCH OFFICE G2                     -      E01      -
H22    BRANCH OFFICE H2                     -      E01      -
I22    BRANCH OFFICE I2                     -      E01      -
J22    BRANCH OFFICE J2                     -      E01      -

  14 record(s) selected.

	  

OK, the ORG and DEPT tables are populated. If something went wrong, you should refer to IBM DB2 documentation to fix the issue before the next step because you would not be able to execute the sample program without a basic running installation.

User customization

We want to execute our example program with a generic user, not just using db2inst1 because that's the system user dedicated to the database instance execution. The commands below explain as the generic user tiian (my own user) can be used instead of db2inst1.

Grant DBADM privilege to the user tiian:

db2 => grant DBADM on database to user tiian
DB20000I  The SQL command completed successfully.
	  

DBADM is not the lowest authorization level necessary to execute our example, but for the sake of this example it's a good enought choice.

Add something like the 4 lines below to your $HOME/.profile or equivalent profile configuration:

# The following three lines have been added by IBM DB2 instance utilities.
if [ -f /home/db2inst1/sqllib/db2profile ]; then
    . /home/db2inst1/sqllib/db2profile
fi
	  

Then login again and check your environment:

tiian@ubuntu:~$ env|grep -i db2
DB2INSTANCE=db2inst1
LD_LIBRARY_PATH=/home/db2inst1/sqllib/lib32
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/db2inst1/sqllib/bin:/home/db2inst1/sqllib/adm:/home/db2inst1/sqllib/misc:/home/db2inst1/sqllib/db2tss/bin
CLASSPATH=/home/db2inst1/sqllib/java/db2java.zip:/home/db2inst1/sqllib/java/db2jcc.jar:/home/db2inst1/sqllib/java/sqlj.zip:/home/db2inst1/sqllib/function:/home/db2inst1/sqllib/java/db2jcc_license_cu.jar:.
	  

As shown above, DB2INSTANCE, LD_LIBRARY_PATH, PATH variables should refer to DB2 stuff too. Connect to the database using your own user instead of db2inst1:

tiian@ubuntu:~$ db2
(c) Copyright IBM Corporation 1993,2007
Command Line Processor for DB2 Client 9.7.1

You can issue database manager commands and SQL statements from the command
prompt. For example:
    db2 => connect to sample
    db2 => bind sample.bnd

For general help, type: ?.
For command help, type: ? command, where command can be
the first few keywords of a database manager command. For example:
 ? CATALOG DATABASE for help on the CATALOG DATABASE command
 ? CATALOG          for help on all of the CATALOG commands.

To exit db2 interactive mode, type QUIT at the command prompt. Outside
interactive mode, all commands must be prefixed with 'db2'.
To list the current command option settings, type LIST COMMAND OPTIONS.

For more detailed help, refer to the Online Reference Manual.

db2 => connect to sample

   Database Connection Information

 Database server        = DB2/LINUX 9.7.1
 SQL authorization ID   = TIIAN
 Local database alias   = SAMPLE

db2 => select * from DB2INST1.ORG

DEPTNUMB DEPTNAME       MANAGER DIVISION   LOCATION
-------- -------------- ------- ---------- -------------
      10 Head Office        160 Corporate  New York
      15 New England         50 Eastern    Boston
      20 Mid Atlantic        10 Eastern    Washington
      38 South Atlantic      30 Eastern    Atlanta
      42 Great Lakes        100 Midwest    Chicago
      51 Plains             140 Midwest    Dallas
      66 Pacific            270 Western    San Francisco
      84 Mountain           290 Western    Denver

  8 record(s) selected.

db2 => select * from DB2INST1.DEPT

DEPTNO DEPTNAME                             MGRNO  ADMRDEPT LOCATION
------ ------------------------------------ ------ -------- ----------------
A00    SPIFFY COMPUTER SERVICE DIV.         000010 A00      -
B01    PLANNING                             000020 A00      -
C01    INFORMATION CENTER                   000030 A00      -
D01    DEVELOPMENT CENTER                   -      A00      -
D11    MANUFACTURING SYSTEMS                000060 D01      -
D21    ADMINISTRATION SYSTEMS               000070 D01      -
E01    SUPPORT SERVICES                     000050 A00      -
E11    OPERATIONS                           000090 E01      -
E21    SOFTWARE SUPPORT                     000100 E01      -
F22    BRANCH OFFICE F2                     -      E01      -
G22    BRANCH OFFICE G2                     -      E01      -
H22    BRANCH OFFICE H2                     -      E01      -
I22    BRANCH OFFICE I2                     -      E01      -
J22    BRANCH OFFICE J2                     -      E01      -

  14 record(s) selected.

db2 => quit
DB20000I  The QUIT command completed successfully.
	  

You have just verified that a generic user, like tiian in the example above, can connect to the database and execute some query.

Start the LIXA state server

Start the state server as shown below:

tiian@ubuntu:~$ sudo su - lixa
lixa@ubuntu:~$ /opt/lixa/sbin/lixad --daemon
lixa@ubuntu:~$ exit
logout
tiian@ubuntu:~$ ps -ef|grep lixad|grep -v grep
lixa     12866     1  0 21:35 ?        00:00:00 /opt/lixa/sbin/lixad --daemon
	

Build the client program

Prepare the client (Application Program) using the below commands (gcc command was splitted on several lines using \ to help readability, but you may use a single line):

tiian@ubuntu:~$ mkdir tmp
tiian@ubuntu:~$ cd tmp
tiian@ubuntu:~/tmp$ cp /opt/lixa/share/doc/lixa-X.Y.Z/examples/example3_db2.c .
tiian@ubuntu:~/tmp$ gcc example3_db2.c $(/opt/lixa/bin/lixa-config -c -f -l -d) \
> -I/opt/ibm/db2/V9.7/include -L/opt/ibm/db2/V9.7/lib32/ -ldb2 -o example3_db2
	

Verify the executable produced by gcc:

tiian@ubuntu:~/tmp$ ldd example3_db2
        linux-gate.so.1 =>  (0xb775f000)
        liblixac.so.0 => /opt/lixa/lib/liblixac.so.0 (0xb7744000)
        libdb2.so.1 => /home/db2inst1/sqllib/lib32/libdb2.so.1 (0xb6212000)
        libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb60b4000)
        libgmodule-2.0.so.0 => /usr/lib/libgmodule-2.0.so.0 (0xb60b0000)
        libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb60ac000)
        libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0xb60a7000)
        librt.so.1 => /lib/tls/i686/cmov/librt.so.1 (0xb609e000)
        libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0xb5fed000)
        libxml2.so.2 => /usr/lib/libxml2.so.2 (0xb5ecc000)
        liblixab.so.0 => /opt/lixa/lib/liblixab.so.0 (0xb5eb9000)
        libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb5ea1000)
        libcrypt.so.1 => /lib/tls/i686/cmov/libcrypt.so.1 (0xb5e6e000)
        libpam.so.0 => /lib/libpam.so.0 (0xb5e64000)
        libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0xb5e3f000)
        libdb2dascmn.so.1 => /home/db2inst1/sqllib/lib32/libdb2dascmn.so.1 (0xb5e12000)
        libdb2g11n.so.1 => /home/db2inst1/sqllib/lib32/libdb2g11n.so.1 (0xb57a4000)
        libdb2genreg.so.1 => /home/db2inst1/sqllib/lib32/libdb2genreg.so.1 (0xb5763000)
        libdb2install.so.1 => /home/db2inst1/sqllib/lib32/libdb2install.so.1 (0xb5758000)
        libdb2locale.so.1 => /home/db2inst1/sqllib/lib32/libdb2locale.so.1 (0xb5745000)
        libdb2osse.so.1 => /home/db2inst1/sqllib/lib32/libdb2osse.so.1 (0xb5440000)
        libdb2osse_db2.so.1 => /home/db2inst1/sqllib/lib32/libdb2osse_db2.so.1 (0xb53d0000)
        libdb2trcapi.so.1 => /home/db2inst1/sqllib/lib32/libdb2trcapi.so.1 (0xb53bc000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb52c9000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb52be000)
        /lib/ld-linux.so.2 (0xb7760000)
        libpcre.so.3 => /usr/lib/libpcre.so.3 (0xb5297000)
        libz.so.1 => /usr/lib/libz.so.1 (0xb5282000)
        libuuid.so.1 => /lib/libuuid.so.1 (0xb527d000)
	

Set-up LIXA environment

Set-up the LIXA_PROFILE environment variable:

tiian@ubuntu:~/tmp$ echo $LIXA_PROFILE

tiian@ubuntu:~/tmp$ export LIXA_PROFILE=DB2_DYN
tiian@ubuntu:~/tmp$ echo $LIXA_PROFILE
DB2_DYN
	

No additional DB2 variables are needed because they are automatically set at login (see the section called “Set-up DB2 environment”).

Some checks before program execution

We set LIXA_PROFILE to value DB2_DYN, looking at /opt/lixa/etc/lixac_conf.xml:

    <profile name="DB2_DYN">
      <sttsrvs>
        <sttsrv>local_1</sttsrv>
      </sttsrvs>
      <rsrmgrs>
        <rsrmgr>IBMDB2_dynreg</rsrmgr>
      </rsrmgrs>
    </profile>
	

the profile references the Resource Manager named IBMDB2_dynreg, looking again at the config file:

    <rsrmgr name="IBMDB2_dynreg" switch_file="/opt/lixa/lib/switch_ibmdb2_dynreg.so" xa_open_info="axlib=/opt/lixa/lib/liblixac.so,db=sample,tpm=lixa" xa_close_info="" />
	

we can discover how the DB2 database is configured for XA [22].

Program execution (dynamic registration)

It is suggested to open two different terminals: the first one connected to SAMPLE DB2 database and the second one pointing to the directory where the compiled program example3_db2 lives. First teminal session:

tiian@ubuntu:~$ db2
(c) Copyright IBM Corporation 1993,2007
Command Line Processor for DB2 Client 9.7.1

You can issue database manager commands and SQL statements from the command
prompt. For example:
    db2 => connect to sample
    db2 => bind sample.bnd

For general help, type: ?.
For command help, type: ? command, where command can be
the first few keywords of a database manager command. For example:
 ? CATALOG DATABASE for help on the CATALOG DATABASE command
 ? CATALOG          for help on all of the CATALOG commands.

To exit db2 interactive mode, type QUIT at the command prompt. Outside
interactive mode, all commands must be prefixed with 'db2'.
To list the current command option settings, type LIST COMMAND OPTIONS.

For more detailed help, refer to the Online Reference Manual.

db2 => connect to SAMPLE

   Database Connection Information

 Database server        = DB2/LINUX 9.7.1
 SQL authorization ID   = TIIAN
 Local database alias   = SAMPLE

	

Second teminal session:

tiian@ubuntu:~/tmp$ ls -la
total 28
drwxr-xr-x  2 tiian tiian  4096 2011-04-22 16:26 .
drwxr-xr-x 40 tiian tiian  4096 2011-04-18 22:55 ..
-rwxr-xr-x  1 tiian tiian 11030 2011-04-22 16:26 example3_db2
-rw-r--r--  1 tiian tiian  5898 2011-04-22 16:23 example3_db2.c
	

Check the content of DB2INST1.ORG table before program execution:

db2 => select * from DB2INST1.ORG

DEPTNUMB DEPTNAME       MANAGER DIVISION   LOCATION
-------- -------------- ------- ---------- -------------
      10 Head Office        160 Corporate  New York
      15 New England         50 Eastern    Boston
      20 Mid Atlantic        10 Eastern    Washington
      38 South Atlantic      30 Eastern    Atlanta
      42 Great Lakes        100 Midwest    Chicago
      51 Plains             140 Midwest    Dallas
      66 Pacific            270 Western    San Francisco
      84 Mountain           290 Western    Denver

  8 record(s) selected.

	

Execute the program:

tiian@ubuntu:~/tmp$ ./example3_db2 insert org
	

Check the content of the table again:

db2 => select * from DB2INST1.ORG

DEPTNUMB DEPTNAME       MANAGER DIVISION   LOCATION
-------- -------------- ------- ---------- -------------
      10 Head Office        160 Corporate  New York
      15 New England         50 Eastern    Boston
      20 Mid Atlantic        10 Eastern    Washington
      38 South Atlantic      30 Eastern    Atlanta
      42 Great Lakes        100 Midwest    Chicago
      51 Plains             140 Midwest    Dallas
      66 Pacific            270 Western    San Francisco
      84 Mountain           290 Western    Denver
     150 Europe             231 R&D        Mojan

  9 record(s) selected.

	

The example program inserted the last row! You can execute it again

tiian@ubuntu:~/tmp$ ./example3_db2 insert org
	

and it inserts another row:

db2 => select * from DB2INST1.ORG

DEPTNUMB DEPTNAME       MANAGER DIVISION   LOCATION
-------- -------------- ------- ---------- -------------
      10 Head Office        160 Corporate  New York
      15 New England         50 Eastern    Boston
      20 Mid Atlantic        10 Eastern    Washington
      38 South Atlantic      30 Eastern    Atlanta
      42 Great Lakes        100 Midwest    Chicago
      51 Plains             140 Midwest    Dallas
      66 Pacific            270 Western    San Francisco
      84 Mountain           290 Western    Denver
     150 Europe             231 R&D        Mojan
     150 Europe             231 R&D        Mojan

  10 record(s) selected.

	

Because there is no an unique constraint on this table; if you want to check an error while inserting, use DEPT table instead.

db2 => select * from DB2INST1.DEPT

DEPTNO DEPTNAME                             MGRNO  ADMRDEPT LOCATION
------ ------------------------------------ ------ -------- ----------------
A00    SPIFFY COMPUTER SERVICE DIV.         000010 A00      -
B01    PLANNING                             000020 A00      -
C01    INFORMATION CENTER                   000030 A00      -
D01    DEVELOPMENT CENTER                   -      A00      -
D11    MANUFACTURING SYSTEMS                000060 D01      -
D21    ADMINISTRATION SYSTEMS               000070 D01      -
E01    SUPPORT SERVICES                     000050 A00      -
E11    OPERATIONS                           000090 E01      -
E21    SOFTWARE SUPPORT                     000100 E01      -
F22    BRANCH OFFICE F2                     -      E01      -
G22    BRANCH OFFICE G2                     -      E01      -
H22    BRANCH OFFICE H2                     -      E01      -
I22    BRANCH OFFICE I2                     -      E01      -
J22    BRANCH OFFICE J2                     -      E01      -

  14 record(s) selected.

	

Try to insert the same row twice:

tiian@ubuntu:~/tmp$ ./example3_db2 insert dept
tiian@ubuntu:~/tmp$ ./example3_db2 insert dept
Unable to execute the SQL statement ('INSERT INTO DB2INST1.DEPT (DEPTNO, DEPTNAME, ADMRDEPT) VALUES('Z99', 'RESEARCH & DEVELOPMENT', 'E01')'): -1
	

Check the table content:

db2 => select * from DB2INST1.DEPT

DEPTNO DEPTNAME                             MGRNO  ADMRDEPT LOCATION
------ ------------------------------------ ------ -------- ----------------
A00    SPIFFY COMPUTER SERVICE DIV.         000010 A00      -
B01    PLANNING                             000020 A00      -
C01    INFORMATION CENTER                   000030 A00      -
D01    DEVELOPMENT CENTER                   -      A00      -
D11    MANUFACTURING SYSTEMS                000060 D01      -
D21    ADMINISTRATION SYSTEMS               000070 D01      -
E01    SUPPORT SERVICES                     000050 A00      -
E11    OPERATIONS                           000090 E01      -
E21    SOFTWARE SUPPORT                     000100 E01      -
F22    BRANCH OFFICE F2                     -      E01      -
G22    BRANCH OFFICE G2                     -      E01      -
H22    BRANCH OFFICE H2                     -      E01      -
I22    BRANCH OFFICE I2                     -      E01      -
J22    BRANCH OFFICE J2                     -      E01      -
Z99    RESEARCH & DEVELOPMENT               -      E01      -

  15 record(s) selected.

	

Only one record was inserted. As a final step, clean up both the tables:

tiian@ubuntu:~/tmp$ ./example3_db2 delete dept
tiian@ubuntu:~/tmp$ ./example3_db2 delete org
	

and check the tables were cleaned-up:

db2 => select * from DB2INST1.DEPT

DEPTNO DEPTNAME                             MGRNO  ADMRDEPT LOCATION
------ ------------------------------------ ------ -------- ----------------
A00    SPIFFY COMPUTER SERVICE DIV.         000010 A00      -
B01    PLANNING                             000020 A00      -
C01    INFORMATION CENTER                   000030 A00      -
D01    DEVELOPMENT CENTER                   -      A00      -
D11    MANUFACTURING SYSTEMS                000060 D01      -
D21    ADMINISTRATION SYSTEMS               000070 D01      -
E01    SUPPORT SERVICES                     000050 A00      -
E11    OPERATIONS                           000090 E01      -
E21    SOFTWARE SUPPORT                     000100 E01      -
F22    BRANCH OFFICE F2                     -      E01      -
G22    BRANCH OFFICE G2                     -      E01      -
H22    BRANCH OFFICE H2                     -      E01      -
I22    BRANCH OFFICE I2                     -      E01      -
J22    BRANCH OFFICE J2                     -      E01      -

  14 record(s) selected.

db2 => select * from DB2INST1.ORG

DEPTNUMB DEPTNAME       MANAGER DIVISION   LOCATION
-------- -------------- ------- ---------- -------------
      10 Head Office        160 Corporate  New York
      15 New England         50 Eastern    Boston
      20 Mid Atlantic        10 Eastern    Washington
      38 South Atlantic      30 Eastern    Atlanta
      42 Great Lakes        100 Midwest    Chicago
      51 Plains             140 Midwest    Dallas
      66 Pacific            270 Western    San Francisco
      84 Mountain           290 Western    Denver

  8 record(s) selected.

	

To verify the LIXA Transaction Manager and DB2 Resource Manager are using the dynamic transaction registration, you can inspect the trace produced by the LIXA client library:

tiian@ubuntu:~/tmp$ export LIXA_TRACE_MASK=0x00002000
tiian@ubuntu:~/tmp$ echo $LIXA_TRACE_MASK
0x00002000
tiian@ubuntu:~/tmp$ ./example3_db2 insert dept 2>&1 | grep ax_reg
2011-04-22 22:08:40.650458 [6654/3039381232] ax_reg: rmid=0, xid=0xbfcd65d0, flags=0x0
2011-04-22 22:08:40.650858 [6654/3039381232] ax_reg: the application program has started a transaction (TX states S3); this XID '1279875137.9a73b024b7ab4018915b54761d3dcd79.e41205820a9c722218578c0eeec6a27c' will be returned
2011-04-22 22:08:40.651156 [6654/3039381232] ax_reg: sending 153 bytes to the server for step 8
2011-04-22 22:08:40.651316 [6654/3039381232] ax_reg/excp=7/ret_cod=0/errno=2
	

I don't know how you can retrieve the same information on the DB2 side, but there probably is a way to do it. Clean-up again the table...

tiian@ubuntu:~/tmp$ ./example3_db2 delete dept
	

Program execution (static registration)

If you desire static transaction registration instead of the dynamic one, you can switch the LIXA_PROFILE:

tiian@ubuntu:~/tmp$ export LIXA_PROFILE=DB2_STA
tiian@ubuntu:~/tmp$ echo $LIXA_PROFILE
DB2_STA
tiian@ubuntu:~/tmp$ export LIXA_TRACE_MASK=0x00002000
tiian@ubuntu:~/tmp$ echo $LIXA_TRACE_MASK
0x00002000
	

you can verify in file /opt/lixa/etc/lixac_conf.xml that DB2_STA is associated to static registration. Execute the program:

tiian@ubuntu:~/tmp$ ./example3_db2 insert dept 2>&1 | grep xa_start
2011-04-22 22:19:45.717003 [6745/3038836464] lixa_xa_start
[...]
2011-04-22 22:19:45.758075 [6745/3038836464] lixa_xa_start: xa_start_entry(xid, 0, 0x0) = 0
2011-04-22 22:19:45.758321 [6745/3038836464] lixa_xa_start: sending 210 bytes to the server for step 24
2011-04-22 22:19:45.758681 [6745/3038836464] lixa_xa_start/excp=10/ret_cod=0/errno=2
	

Check the content of the table:

db2 => select * from DB2INST1.DEPT

DEPTNO DEPTNAME                             MGRNO  ADMRDEPT LOCATION
------ ------------------------------------ ------ -------- ----------------
A00    SPIFFY COMPUTER SERVICE DIV.         000010 A00      -
B01    PLANNING                             000020 A00      -
C01    INFORMATION CENTER                   000030 A00      -
D01    DEVELOPMENT CENTER                   -      A00      -
D11    MANUFACTURING SYSTEMS                000060 D01      -
D21    ADMINISTRATION SYSTEMS               000070 D01      -
E01    SUPPORT SERVICES                     000050 A00      -
E11    OPERATIONS                           000090 E01      -
E21    SOFTWARE SUPPORT                     000100 E01      -
F22    BRANCH OFFICE F2                     -      E01      -
G22    BRANCH OFFICE G2                     -      E01      -
H22    BRANCH OFFICE H2                     -      E01      -
I22    BRANCH OFFICE I2                     -      E01      -
J22    BRANCH OFFICE J2                     -      E01      -
Z99    RESEARCH & DEVELOPMENT               -      E01      -

  15 record(s) selected.

	

And clean the table again:

tiian@ubuntu:~/tmp$ unset LIXA_TRACE_MASK
tiian@ubuntu:~/tmp$ ./example3_db2 delete dept
	



[22] The content of xa_open_info string is documented at IBM Infocenter: search the string xa_open string formats in the documentation relevant to your installed version; this is a link http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/topic/com.ibm.db2.luw.admin.2pc.doc/doc/r0005080.html but it may change in the future.