1. pddbst can be executed only while HiRDB is HiRDB is running.
2. Execute pddbst at the server machine that contains the single server or where the system manager is located.
3. The maximum number of concurrent executions of pddbst depends on the pd_utl_exec_mode operand value.
   

   When pd_utl_exec_mode=0 is specified:

   The maximum number of concurrent executions of pddbst is 16.

   When pd_utl_exec_mode=1 is specified:

   The maximum number of concurrent executions of pddbst is equal to the pd_max_users operand value.

4. An RDAREA to be analyzed (data dictionary RDAREA, data dictionary LOB RDAREA, registry RDAREA, or registry LOB RDAREA) must be in one of the following statuses:
   
   • Open status without shutdown
   • Command shutdown and open status
   • Referencing-possible shutdown and open status
   For details about user RDAREAs and user LOB RDAREAs, see Appendix C. RDAREA Status During Command Execution.
   
5. You must set the LANG environment variable in order to execute pddbst. For details about LANG, see the manual HiRDB Version 8 UAP Development Guide.

1. The following are the pddbst utility's return codes:
   0: Normal termination
   4: Warning termination (invalid specification or skipped analysis processing)
   8: Abnormal termination
   
2. When pddbst is executed, an RDAREA to be analyzed is locked (shared retrieval mode: SR).
3. If logical analysis (-k logi specified) or analysis by table (-t specified) is performed on a table whose reorganization by pdrorg terminated abnormally, DATA_UNFINISH is displayed for Status.
4. When you execute the facility for predicting reorganization time, make sure that the pd_lck_pool_size operand value specified in the single server definition or the dictionary server definition is no less than the default value. Specify at least the value that is obtained from the following formula:
   

   pd_lck_pool_size operand value = y/x (kilobytes)

   x: 6 in the 32-bit mode; 4 in the 64-bit mode

   y: Number of locked resources used by pddbst

   y=MAX(a,b,c)

   a: Number of defined RDAREAs 30

   b: Number of defined tables + number of defined abstract data types + total number of columns of an abstract data type^* + 61

   c: Number of defined indexes + 124

   ^* An abstract data type is counted once for each table or column in which it is used.

If you selected utf-8 as the character encoding in the pdntenv command, you may be able to use a file with a BOM as the input file for pddbst. Table 15-9 shows whether or not files with a BOM can be used with pddbst. Note that even when a file with a BOM is used as the input file, the BOM is skipped. No BOM is included in the file that is output by pddbst.

Table 15-9 Whether or not files with a BOM can be used in pddbst (applicable to UTF-8)

Option	Input file	Use of file with a BOM
-c	Standard value definition file	Y
-v	Control statements file	Y

Legend:

Y: Can be used