Who can help me to review the question? -"ORA-02019: connection description

Question

Log error was found in Alert.log file in a DB in our production. It shows "ORA-02019: connection description for remote database not found". I check it and find the RECO process prompt this error message.
I did the following steps to check the issue:
1) connect system
2) SQL> select local_tran_id,global_tran_id,state,mixed,advice,retry_time,os_user,host,db_user from dba_2pc_pending;
LOCAL_TRAN_ID GLOBAL_TRAN_ID STATE MIX RETRY_TIM OS_USER HOST DB_USER
8.2.7545 ITOWN01M.US.ORACLE.COM.9ed5378 collecting no 27-SEP-04 oracle DB1 EPORT
a.8.2.7545
7.35.9404 ITOWN01M.US.ORACLE.COM.9ed5378 collecting no 27-SEP-04 administrator SZITOWN\SZITOWN-016 EPORT
a.7.35.9404
3.47.10637 ITOWN01M.US.ORACLE.COM.9ed5378 collecting no 27-SEP-04 administrator SZITOWN\SZITOWN-016 EPORT
a.3.47.10637
1.0.20850 ITOWN01M.US.ORACLE.COM.9ed5378 collecting no 27-SEP-04 administrator SZITOWN\SZITOWN-016 EPORT
a.1.0.20850
1.47.21806 ITOWN01M.US.ORACLE.COM.9ed5378 collecting no 27-SEP-04 Administrator WORKGROUP\SZITOWN-013 EPORT
a.1.47.21806
3) SQL> select local_tran_id,in_out,database,dbuser_owner,interface,dbid,sess#,branch from dba_2pc_neighbors;
LOCAL_TRAN_ID IN_ DATABASE DBUSER_OWN I DBID SESS# BRANCH
8.2.7545 in EPORT N 1 0000
7.35.9404 in EPORT N 1 0000
3.47.10637 in EPORT N 1 0000
1.0.20850 in EPORT N 1 0000
1.47.21806 in EPORT N 1 0000
8.2.7545 out CIQUSR_HG.US.ORACLE.COM EPORT N 234c63b2 1 4
7.35.9404 out CIQUSR_HG.US.ORACLE.COM EPORT N 234c63b2 1 4
3.47.10637 out CIQUSR_HG.US.ORACLE.COM EPORT N 234c63b2 1 4
1.0.20850 out CIQUSR_HG.US.ORACLE.COM EPORT N 234c63b2 1 4
1.47.21806 out CIQUSR_HG.US.ORACLE.COM EPORT N 234c63b2 1 4
4) I try to commit them by FORCE.
SQL> commit force '8.2.7545';
commit force '8.2.7545'
ERROR at line 1:
ORA-02058: no prepared transaction found with ID 8.2.7545
5) It seems no such entry, so I want to purge it.
SQL> exec dbms_transaction.purge_lost_db_entry('8.2.7545');
BEGIN dbms_transaction.purge_lost_db_entry('8.2.7545'); END;
ERROR at line 1:
ORA-30019: Illegal rollback Segment operation in Automatic Undo mode
ORA-06512: at "SYS.DBMS_TRANSACTION", line 65
ORA-06512: at "SYS.DBMS_TRANSACTION", line 85
ORA-06512: at line 1
What should I do at the point?? Although the issue do not get any bad effect to current Production, I really hope eveything would be OK.
Any help from you would be appreciated!!
Robin

Answer 1

Hello,
you have to fix the basic problem,ORA-02019 means your remote database cannot be reached because of an invalid connect string. So it's also impossible to do a COMMIT FORCE,same reason.
ORA-30019 is due to a bug, document 274321.1 in metalink describes what to do. Here's an extract:
If you get the following errors while purging transactions using "dbms_transaction.purge_lost_db_entry"
SQL> EXECUTE DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('5.23.2386');
BEGIN DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('5.23.2386'); END;
ERROR at line 1:
ORA-30019: Illegal rollback Segment operation in Automatic Undo mode
ORA-06512: at "SYS.DBMS_TRANSACTION", line 65
ORA-06512: at "SYS.DBMS_TRANSACTION", line 85
ORA-06512: at line 1
Fix:
===
This problem is logged as
Bug.2191458 (unpublished) UNABLE TO EXEC DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY WITH AUTO UNDO MANAGEMENT and is worked by development.
Use the following workaround:
You have to use local_tran_id.....
Issue commit before alter system set "_smu_debug_mode" = 4;
Follow the steps,
SQL>commit;
SQL> alter session set "_smu_debug_mode" = 4;
SQL>execute DBMS_TRANSACTION.PURGE_LOST_DB_ENTRY('local_tran_id');