Hi there,
I have TSM 4.2 running on AIX 4.3.3 and I do a backup for ORACLE 8.1.7 in the 
same TSM server using RMAN & TSM everyday.
Sometimes the rman backup failed. Every time the backup failed, a tape drive 
error will be generated in the error log in the operating system.
Could anyone tell me what is the problem and how can I solve it?

This is the RMAN log: 
 
RMAN-08504: input archivelog thread=1 sequence=17603 recid=22515 stamp=495480018
RMAN-08504: input archivelog thread=1 sequence=17604 recid=22516 stamp=495480752
RMAN-08504: input archivelog thread=1 sequence=17605 recid=22518 stamp=495481650
RMAN-08504: input archivelog thread=1 sequence=17606 recid=22519 stamp=495482801
RMAN-08504: input archivelog thread=1 sequence=17607 recid=22520 stamp=495484635
RMAN-08504: input archivelog thread=1 sequence=17608 recid=22522 stamp=495486622
RMAN-08504: input archivelog thread=1 sequence=17609 recid=22523 stamp=495489370
RMAN-03026: error recovery releasing channel resources
RMAN-08031: released channel: t1
RMAN-08031: released channel: t2
RMAN-08031: released channel: t3
RMAN-08031: released channel: t4
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-10035: exception raised in RPC: O
RMAN-10031: ORA-19624 occurred during call to DBMS_BACKUP_RESTORE.BACKUPPIECECRE
ATE
RMAN-10035: exception raised in RPC: O
RMAN-10031: ORA-19624 occurred during call to DBMS_BACKUP_RESTORE.BACKUPPIECECRE
ATE
RMAN-10035: exception raised in RPC: O
RMAN-10031: ORA-19624 occurred during call to DBMS_BACKUP_RESTORE.BACKUPPIECECRE
ATE
RMAN-03015: error occurred in stored script prod_archivebackup
RMAN-03007: retryable error occurred during execution of command: backup
RMAN-07004: unhandled exception during command execution on channel t1
RMAN-10035: exception raised in RPC: ORA-19506: failed to create sequential file
, name="hgeojmjv_1_1", parms=""
ORA-27028: skgfqcre: sbtbackup returned error
ORA-19511: ANS1474E (RC-451) An error occurred using the Shared Memory protocol
RMAN-10031: ORA-19624 occurred during call to DBMS_BACKUP_RESTORE.BACKUPPIECECRE
ATE
Recovery Manager complete.

This is the AIX error log:
IDENTIFIER: D1A1AE6F 


Date/Time: Sun Jun 1 19:24:16 

Sequence Number: 29671 

Machine Id: 0050675A4C00 

Node Id: hnab 

Class: H 

Type: INFO 

Resource Name: rmt3 

Resource Class: tape 

Resource Type: 3590 

Location: 40-58-01 

VPD: 

Manufacturer................IBM 

Machine Type and Model......03590E1A 

Serial Number...............0000000C5897 

Device Specific.(FW)........E32E 

Loadable Microcode Level....A0B00E26 


Description 

AAA0 


Probable Causes 

TAPE DRIVE 


Failure Causes 

TAPE DRIVE 


Recommended Actions 

REFER TO PRODUCT DOCUMENTATION FOR ADDITIONAL INFORMATION 


Detail Data 

DIAGNOSTIC EXPLANATION 

3100 0044 0000 6140 0130 3030 3030 3030 3233 3245 3537 3030 3941 3030 3030 3030

4646 4335 3539 4335 3539 3830 3030 4942 4D31 332D 3030 3030 3030 3043 3538 3937

3033 3539 3045 3141 



Regards,

Abdulaziz Almaummar