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[9.5.449 Pro] - Very strange bug?

 
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[9.5.449 Pro] - Very strange bug?
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gemisigo



Joined: 11 Mar 2010
Posts: 1425

Post [9.5.449 Pro] - Very strange bug? Reply with quote
I've run into a very strange bug/event. I have got a table in Oracle that causes SQL Editor to crash in case a certain combination of columns is selected from it. There are a bunch of NUMBERs, VARCHAR2s, 3 CLOBs, and 2 TIMESTAMPs. The rest of the columns seem not to make any difference but as soon as all the CLOBs and the TIMESTAMPs are selected SE goes down in flames. Check this short video here.


The CREATE statement of the table (extracted by Oracle SQL Developer):
Code:


  CREATE TABLE "DEMO1"."SYM_TRIGGER_HIST"
   (   "TRIGGER_HIST_ID" NUMBER(22,0) NOT NULL ENABLE,
   "TRIGGER_ID" VARCHAR2(128 BYTE) NOT NULL ENABLE,
   "SOURCE_TABLE_NAME" VARCHAR2(255 BYTE) NOT NULL ENABLE,
   "SOURCE_CATALOG_NAME" VARCHAR2(255 BYTE),
   "SOURCE_SCHEMA_NAME" VARCHAR2(255 BYTE),
   "NAME_FOR_UPDATE_TRIGGER" VARCHAR2(255 BYTE),
   "NAME_FOR_INSERT_TRIGGER" VARCHAR2(255 BYTE),
   "NAME_FOR_DELETE_TRIGGER" VARCHAR2(255 BYTE),
   "TABLE_HASH" NUMBER(38,0) DEFAULT 0 NOT NULL ENABLE,
   "TRIGGER_ROW_HASH" NUMBER(38,0) DEFAULT 0 NOT NULL ENABLE,
   "TRIGGER_TEMPLATE_HASH" NUMBER(38,0) DEFAULT 0 NOT NULL ENABLE,
   "COLUMN_NAMES" CLOB NOT NULL ENABLE,
   "PK_COLUMN_NAMES" CLOB NOT NULL ENABLE,
   "LAST_TRIGGER_BUILD_REASON" CHAR(1 BYTE) NOT NULL ENABLE,
   "ERROR_MESSAGE" CLOB,
   "CREATE_TIME" TIMESTAMP (6) NOT NULL ENABLE,
   "INACTIVE_TIME" TIMESTAMP (6),
    CONSTRAINT "SYM_TRIGGER_HIST_PK" PRIMARY KEY ("TRIGGER_HIST_ID")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "DEMO"  ENABLE
   ) SEGMENT CREATION IMMEDIATE
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "DEMO"   NO INMEMORY
 LOB ("COLUMN_NAMES") STORE AS SECUREFILE (
  TABLESPACE "DEMO" ENABLE STORAGE IN ROW CHUNK 8192
  NOCACHE LOGGING  NOCOMPRESS  KEEP_DUPLICATES
  STORAGE(INITIAL 106496 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT))
 LOB ("PK_COLUMN_NAMES") STORE AS SECUREFILE (
  TABLESPACE "DEMO" ENABLE STORAGE IN ROW CHUNK 8192
  NOCACHE LOGGING  NOCOMPRESS  KEEP_DUPLICATES
  STORAGE(INITIAL 106496 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT))
 LOB ("ERROR_MESSAGE") STORE AS SECUREFILE (
  TABLESPACE "DEMO" ENABLE STORAGE IN ROW CHUNK 8192
  NOCACHE LOGGING  NOCOMPRESS  KEEP_DUPLICATES
  STORAGE(INITIAL 106496 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)) ;

  CREATE INDEX "DEMO1"."SYM_IDX_TRIGG_HIST_1" ON "DEMO1"."SYM_TRIGGER_HIST" ("TRIGGER_ID", "INACTIVE_TIME")
  PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
  BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "DEMO" ;

Fri Jan 05, 2018 10:09 am View user's profile Send private message
SysOp
Site Admin


Joined: 26 Nov 2006
Posts: 6573

Post Reply with quote
Thank you very much for reporting this. We are able to reproduce this issue and investigating the root cause.
Sun Jan 07, 2018 12:32 am View user's profile Send private message
SysOp
Site Admin


Joined: 26 Nov 2006
Posts: 6573

Post Reply with quote
PS. An exception occurs in oracore12.dll OCI library when a certain combination of CLOB and TIMESTAMP columns referenced in the SELECT list
Sun Jan 07, 2018 2:12 am View user's profile Send private message
gemisigo



Joined: 11 Mar 2010
Posts: 1425

Post Reply with quote
That's pretty bad. Is there anything there that can be done about it besides not selecting certain combinations of columns?
Mon Jan 08, 2018 4:13 am View user's profile Send private message
SysOp
Site Admin


Joined: 26 Nov 2006
Posts: 6573

Post Reply with quote
Let me get back to this when I hear from the team, we are still investigating if it's caused by an issue on our end.
Mon Jan 08, 2018 8:47 am View user's profile Send private message
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