File Management - IBM

More documents

Recommendations

Info

| | | | | | | | | | | | | | | | 86 File Management V4R5 See “Adding or changing source file sequence number and date fields (SRCOPT and SRCSEQ Parameters)” on page 120 for source file considerations in this operation, and “Copying deleted records (COMPRESS Parameter)” on page 103 for considerations for deleted records. If MBROPT(*ADD) is specified, records are always physically added at the end of the file, even if it is a keyed sequence file. In the following illustration, FILEDB1 is a keyed physical from-file, and FILEDB2 is a keyed physical to-file. The files are shown as they physically appear in storage. FILEDB2 already has three records in it. FILEDB1 FILEDB2 Key Key 6 3 1 7 4 2 5 Keyed Database From-File in Arrival Sequence Existing Records 9 54 24 Keyed Database To-File in Arrival Sequence RV2H079-0 If you specify MBROPT(*ADD), FROMKEY(1 2), and TOKEY(1 5), four records are added in key field order to the end of FILEDB2. FILEDB1 FILEDB2 Key Key 6 3 1 7 4 2 5 Keyed Database From-File in Arrival Sequence Existing Records Added Records 54 24 Keyed Database To-File in Arrival Sequence The added records, however, appear to be merged in the new file when viewed through a keyed sequence access path. 9 2 3 4 5 MBROPT(*ADD) FROMKEY(1 2) TOKEY(1 5) RV2H080-0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Existing Records Added Records FILEDB2 Key 9 54 24 2 3 4 5 Relative Record Number FILEDB2 Key Keyed Access View of To-File There are several ways to select records for copying . One method is selection by relative record number. (See “Selecting records by relative record numbers (FROMRCD and TORCD Parameters)” on page 93.) Using the preceding example, if you selected records to copy to a third file from FILEDB2 by relative record number, from number 3 through 5, you would copy the records with a key value of 24, 2, and 3, not 4, 5, and 9. Specifying *UPDADD when copying files 1 2 3 4 5 6 7 Keyed Database To-File in Arrival Sequence 2 3 4 5 9 24 54 RV2H081-0 When you specify *UPDADD on the CPYF command, a from-file key value builds before the from-file record moves into the to-file. The from-file builds this key value by using the key specifications of the to-file. Before the key value is built, the system performs any necessary field or data mapping, data conversion, or record selection. The system checks the to-file to see if this key value already exists in it (duplicate key of the from-file data). If the key value does exist in the to-file,the from-file record that contains the key value updates that to-file record. The following apply if you specify MBROPT(*UPDADD) on the CPYF command: v The to-file must be a local database physical file that contains a primary or unique key. v You may not specify CRTFILE(*YES). The to-file must exist before you run CPYF. v CPYF cannot copy from multiple formats. v Detected duplicate keys are not skipped but updated with the new from-file record value. Duplicate key errors (CPF5026) are not included as ERRLVL errors. v CPF5027 will be included as an ERRLVL error. This error can occur if another process has a record that is locked. To avoid this error, you may want to pre-allocate the to-file within your job before performing the CPYF. You can use the WAITRCD parameter on the CRTPF and CHGPF commands to limit the length of time that the commands spend waiting for a record lock to be released in the to-file. v All existing FMTOPT values are allowed. However, when using MBROPT(*UPDADD), take care to avoid updating records that you do not want to update. Also avoid updating the same record multiple times when it is not desired. v Nulls are not used in determining duplicate key values if FMTOPT(*NOCHK) is specified or if the from-file is a device file. v You must have the minimum following authorities to the to-file: Chapter 4. Copying files 87
Page 1:
AS/400e File Management Version 4
Page 4 and 5:
© Copyright International Business
Page 6 and 7:
| | | | | Special considerations fo
Page 8 and 9:
vi File Management V4R5
Page 10 and 11:
viii File Management V4R5
Page 12 and 13:
2 File Management V4R5 v Distribute
Page 14 and 15:
Table 1. File Types and Their Main
Page 16 and 17:
Table 2. High-Level Languages and T
Page 18 and 19:
| | Table 3. High-Level Languages a
Page 20 and 21:
Add Add new records to the file. Up
Page 22 and 23:
| Sharing files 12 File Management
Page 24 and 25:
14 File Management V4R5 For example
Page 26 and 27:
16 File Management V4R5 File resour
Page 28 and 29:
18 File Management V4R5 v “Displa
Page 30 and 31:
Application 1 Application 2 Applica
Page 32 and 33:
22 File Management V4R5 LVLCHK(*NO)
Page 34 and 35:
The open feedback area also contain
Page 36 and 37:
26 File Management V4R5 Table 6. OS
Page 38 and 39:
28 File Management V4R5 Table 7. Ma
Page 40 and 41:
30 File Management V4R5 Depending o
Page 42 and 43:
32 File Management V4R5
Page 44 and 45:
34 File Management V4R5 Handling ov
Page 46 and 47: 36 File Management V4R5 output queu
Page 48 and 49: 38 File Management V4R5 The followi
Page 50 and 51: 40 File Management V4R5 application
Page 52 and 53: 42 File Management V4R5 activation
Page 54 and 55: Program A (in user default activati
Page 56 and 57: 46 File Management V4R5 Override 1
Page 58 and 59: 48 File Management V4R5 same call l
Page 60 and 61: 50 File Management V4R5 Program A .
Page 62 and 63: 52 File Management V4R5 Applying OV
Page 64 and 65: Deleting overrides 54 File Manageme
Page 66 and 67: Program A (in user default activati
Page 68 and 69: 58 File Management V4R5 Displaying
Page 70 and 71: 60 File Management V4R5 Command 7 d
Page 72 and 73: 62 File Management V4R5 Display All
Page 74 and 75: Redirecting files 64 File Managemen
Page 76 and 77: 66 File Management V4R5 Default act
Page 78 and 79: 68 File Management V4R5 From Databa
Page 80 and 81: Copying files: overview 70 File Man
Page 82 and 83: 72 File Management V4R5 Table 9. Co
Page 84 and 85: Table 10. Summary of Copy Functions
Page 86 and 87: 76 File Management V4R5 Copying fil
Page 88 and 89: Resending copy file completion mess
Page 90 and 91: 80 File Management V4R5 from-file m
Page 92 and 93: CPYSRCF command support for CCSIDs
Page 94 and 95: | | | | | | | | | | | | | | | | | |
Page 98 and 99: | | | | | | | | | | | | | | | | | |
Page 100 and 101: 90 File Management V4R5 Copying onl
Page 102 and 103: Selecting the records to copy 92 Fi
Page 104 and 105: 94 File Management V4R5 Selecting r
Page 106 and 107: 96 File Management V4R5 Example: bu
Page 108 and 109: 98 File Management V4R5 When you sp
Page 110 and 111: 100 File Management V4R5 A field na
Page 112 and 113: 102 File Management V4R5 v “Null-
Page 114 and 115: 104 File Management V4R5 - INCCHAR(
Page 116 and 117: When you specify PRINT(*EXCLD), the
Page 118 and 119: Note: It is possible for files with
Page 120 and 121: 110 File Management V4R5 Variable-L
Page 122 and 123: Table 14 on page 112 outlines the c
Page 124 and 125: 114 File Management V4R5 in the cur
Page 126 and 127: 116 File Management V4R5 (including
Page 128 and 129: | | | | | | | | | | | | | | | | | |
Page 130 and 131: | | | | | | | | | | | | | | | | | |
Page 132 and 133: Preventing errors when copying file
Page 134 and 135: elationship. However, the copy oper
Page 136 and 137: Preventing allocation errors when c
Page 138 and 139: 128 File Management V4R5 - A depend
Page 140 and 141: Year 2000 support: date, time, and
Page 142 and 143: FLD TYPE DATFMT SPECIFIED FIELD LEN
Page 144 and 145: Restrictions for Year 2000 support
Page 146 and 147:
| | | | | | | | | | AS/400 supports
Page 148 and 149:
| | | | | | | | | | | | | | | | | |
Page 150 and 151:
Using the Copy From Import File (CP
Page 152 and 153:
externally described database file
Page 154 and 155:
144 File Management V4R5 v Two adja
Page 156 and 157:
- Description: This Field Definitio
Page 158 and 159:
Date Fields All date formats suppor
Page 160 and 161:
150 File Management V4R5 Figure 14
Page 162 and 163:
devices that process the same type
Page 164 and 165:
Default system output queues 154 Fi
Page 166 and 167:
Spooling writers 156 File Managemen
Page 168 and 169:
value of *OWNER indicates that only
Page 170 and 171:
160 File Management V4R5 You can us
Page 172 and 173:
162 File Management V4R5 QFNC Finan
Page 174 and 175:
164 File Management V4R5 If a job b
Page 176 and 177:
Spooling subsystem 166 File Managem
Page 178 and 179:
168 File Management V4R5 the DLTSPL
Page 180 and 181:
Table 20. Open Feedback Area (conti
Page 182 and 183:
Table 20. Open Feedback Area (conti
Page 184 and 185:
Table 21. Device Definition List (c
Page 186 and 187:
Page 188 and 189:
Page 190 and 191:
Table 23. Common I/O Feedback Area
Page 192 and 193:
Page 194 and 195:
Page 196 and 197:
Table 24. I/O Feedback Area for ICF
Page 198 and 199:
Table 24. I/O Feedback Area for ICF
Page 200 and 201:
Table 26. I/O Feedback Area for Dat
Page 202 and 203:
Table 27. Get Attributes (continued
Page 204 and 205:
Page 206 and 207:
Page 208 and 209:
(SBCS) A B 1 2 1-Byte Code X’C1
Page 210 and 211:
200 File Management V4R5 Table 28.
Page 212 and 213:
Invalid double-byte code and undefi
Page 214 and 215:
DBCS device file support 204 File M
Page 216 and 217:
206 File Management V4R5 - Create D
Page 218 and 219:
DBCS display support 208 File Manag
Page 220 and 221:
210 File Management V4R5 When you c
Page 222 and 223:
DBCS font tables 212 File Managemen
Page 224 and 225:
214 File Management V4R5 CPYIGCTBLI
Page 226 and 227:
DBCS font files DBCS sort tables 21
Page 228 and 229:
Finding out if a DBCS sort table ex
Page 230 and 231:
220 File Management V4R5 v When you
Page 232 and 233:
User-created dictionary for DBCS 22
Page 234 and 235:
Work with DBCS conversion dictionar
Page 236 and 237:
another alphanumeric entry in the e
Page 238 and 239:
Figure 22. Display Produced by the
Page 240 and 241:
230 File Management V4R5 1. Positio
Page 242 and 243:
Figure 23. Example Screen 1 Positio
Page 244 and 245:
Figure 27. Example Screen 5 234 Fil
Page 246 and 247:
236 File Management V4R5 - If you t
Page 248 and 249:
contains information on data descri
Page 250 and 251:
240 File Management V4R5
Page 252 and 253:
CHGWTR (Change Writer) command 157
Page 254 and 255:
command, CL 160, 212 (continued) Tr
Page 256 and 257:
DBCS conversion dictionary (continu
Page 258 and 259:
file object authority 8 file proces
Page 260 and 261:
output queue (continued) changing 1
Page 262 and 263:
estriction DBCS files 206 deleting
Page 264:
WRKOUTQD (Work with Output Queue De
show all

File Management - IBM

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?