Memory size required for the execution of the database recovery utility (pdrstr)

Condition	Formula for determining memory size (KB)
Single server	65 + {(number of RDAREAs subject to recovery + 9) 10} 6 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 50 + 98 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + c + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 + {(number of RDAREAs subject to recovery + 99) 100} 5 Add the following value if this server contains backup files: + 100 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 Add the following value if unload log files are to be input: + 57 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + 64 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 + {(maximum number of concurrently executable transactions + 99) 100} 5 + (maximum page size for RDAREA subject to recovery) 50 + 0.6 number of RDAREAs subject to recovery + size of work buffer for sorting (value of -y option) Add the following value if differential backup files are used for recovery: + 32 2 + (512 + 128 number of RDAREAs subject to backup) 32768 32 + (256 + 128 number of RDAREAs subject to backup + a + 8 b) 32768 32 + (32 differential backup count) 1024
Utility special unit	100 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100

Condition

Formula for determining memory size (KB)

Single server

65 + {(number of RDAREAs subject to recovery + 9) [Figure]

10}

6
+ {(number of RDAREA component files subject to recovery + 25) [Figure]

16}

8 + 50
+ 98 + 2 [Figure]

MAX(32, value of pd_utl_buff_size)
+ {(number of RDAREAs subject to recovery + 9) [Figure]

10}

6 + c
+ {(number of RDAREA component files subject to recovery + 25) [Figure]

16}

8 + 100
+ {(number of RDAREAs subject to recovery + 99) [Figure]

100}

Add the following value if this server contains backup files:

+ 100 + 2

MAX(32, value of pd_utl_buff_size)
+ {(number of RDAREAs subject to recovery + 9) [Figure]

10}

6
+ {(number of RDAREA component files subject to recovery + 25) [Figure]

16}

8 + 100

Add the following value if unload log files are to be input:

+ 57 + 2

MAX(32, value of pd_utl_buff_size)
+ {(number of RDAREAs subject to recovery + 9) [Figure]

10}

6 + 64
+ {(number of RDAREA component files subject to recovery + 25) [Figure]

16}

8 + 100
+ {(maximum number of concurrently executable transactions + 99) [Figure]

100}

5
+ (maximum page size for RDAREA subject to recovery) [Figure]

50
+ 0.6 [Figure]

number of RDAREAs subject to recovery + size of work buffer for sorting (value of -y option)

Add the following value if differential backup files are used for recovery:

+ 32

2 +

(512 + 128 [Figure]

number of RDAREAs subject to backup) [Figure]

32768

32
+

(256 + 128 [Figure]

number of RDAREAs subject to backup + a + 8 [Figure]

32768

32
+

(32

differential backup count) [Figure]

1024

Utility special unit

100 + 2

MAX(32, value of pd_utl_buff_size)
+ {(number of RDAREAs subject to recovery + 9) [Figure]

10}

6
+ {(number of RDAREA component files subject to recovery + 25) [Figure]

16}

8 + 100

a: Length of the backup file name specified in the -b option (bytes). If multiple backup files are specified, this value is the total length of the file names.

b: Number of backup files specified in the -b option

c: If the write buffer size is specified, this value is MAX(64, write buffer size). If not, this value is 60.: The write buffer size is the value specified by the -Y option.

Condition	Formula for determining memory size (KB)
MGR	65 + {(number of RDAREAs subject to recovery + 9) 10} 6 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 50 Add the following value if differential backup files are used for recovery: + 32 2 + (512 + 128 number of RDAREAs subject to backup) 32768 32 + (256 + 128 number of RDAREAs subject to backup + a + 8 b) 32768 32 + (32 differential backup count) 1024
DS	35 + 2 MAX(32, value of pd_utl_buff_size) + 100 + 98 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + c + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 + {(number of RDAREAs subject to recovery + 99) 100} 5 Add the following value if this server contains backup files: + 100 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 Add the following value if unload log files are to be input: + 57 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + 64 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 + {(maximum number of concurrently executable transactions + 99) 100} 5 + (maximum page size for RDAREAs subject to recovery) 50 + 0.6 number of RDAREAs subject to recovery + size of work buffer for sorting (value of -y option)
BES	98 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + c + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 + {(number of RDAREAs subject to recovery + 99) 100} 5 Add the following value if this server contains backup files: + 100 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 Add the following value if unload log files are to be input: + 57 + 2 MAX(32, value of pd_utl_buff_size) + {(number of RDAREAs subject to recovery + 9) 10} 6 + 64 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100 + {(maximum number of concurrently executable transactions + 99) 100} 5 + (maximum page size for RDAREAs subject to recovery) 50 + 0.6 number of RDAREAs subject to recovery + size of work buffer for sorting (value of -y option)
Server machine containing backup files	100 + 2 MAX(32, value of pd_utl_buff_size) number of servers subject to recovery + {(number of RDAREAs subject to recovery + 9) 10} 6 + {(number of RDAREA component files subject to recovery + 25) 16} 8 + 100

a: Length of the backup file name specified in the -b option (bytes). If multiple backup files are specified, this value is the total length of the file names.

b: Number of backup files specified in the -b option

c: If the write buffer size is specified, this value is MAX(64, write buffer size). If not, this value is 60.: The write buffer size is the value specified by the -Y option.

20.2.10 Memory size required for the execution of the database recovery utility (pdrstr)

(1) HiRDB/Single Server

(2) HiRDB/Parallel Server