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Internal Error Occurrence Due to Condition 'outlen == enc_coldata_len - salt_size - hash_size'

Document Type | Troubleshooting

Category | Administration

Applicable Product Versions | 6FS06, 6FS07, 6FS07PS, 7FS01, 7FS02, 7FS02PS

Document Number | TADTS010

 

Issue

When updating a table, an Internal Error with condition 'bin->distinct_cnt == 1' occurred.

Reference
This phenomenon occurred in the following environment.
  • Product: Tibero
  • Version: Tibero6 FS06_CS_1902

 

Perform Table Update

The table update should be performed without error.

SQL> UPDATE GEN_ADM.GSLYT016
SET CAMPS_SE_CODE='1'
WHERE YETA_YY='2024'
AND EMPNO=XXXX
AND WORK_BEGIN_DE='20240501';

 

Check sys Log

An Internal Error with condition 'outlen == enc_coldata_len - salt_size - hash_size' occurs, and session disconnection is confirmed.

[07-16T16:03:57.804641] [COM-789] [I] Internal Error with condition 'outlen == enc_coldata_len - salt_size - hash_size' (secu_tde.c:760) (pid=19878, sessid=789, tid=789, os_thr_id=4)
[07-16T16:04:00.823545] [FRM-789] [I] THROW. ec=ERROR_SESS_KILLED(-12001) [ Session has been closed.   ] (csr_id:3) [tbsvr_tracedump.c:294:tb_thr_assert_cmd]
[07-16T16:17:15.853960] [FRM-57] [I] SEND STMT_CANCEL SIGNAL to 678
[07-16T16:17:15.854298] [FRM-678] [I] GET STMT_CANCEL SIGNAL (sessid=678 sess_status=4 tid=678 thr_status=5)

 

 

Cause

Error Occurs When Updating a Table with Encrypted Columns, Indexes, and Triggers Present Simultaneously

  1. An UPDATE statement is executed on a table where encrypted columns, indexes, and triggers all exist.
  2. The UPDATE statement changes the value of the target column, and during this process, the index key value is also updated.
  3. At this time, even if the column is not the target of the UPDATE, the internal logic performs an operation to update the hash value of the encrypted column.
  4. During the hash value update process, an attempt is made to modify a duplicate hash value, causing a conflict.
  5. Due to this conflict, the transaction processing (UPDATE and trigger execution) fails in the subsequently executed trigger.
  6. The UPDATE statement is rolled back, an internal error occurs, and the session is abnormally terminated.
 


Solutions

Apply patch 328713.

Caution
Apply the patch through technical support provided by Tmax Tibero.
Reference
By adding a dummy condition that assigns the encrypted column in the SET clause with the same value, this error can be bypassed.
SQL> UPDATE GEN_ADM.GSLYT016
SET CAMPS_SE_CODE='1', YETA_RRNO=YETA_RRNO
WHERE YETA_YY='2024'
AND EMPNO=XXXX
AND WORK_BEGIN_DE='20240501';

 

 

 

 

 

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