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SharePlex 8.6.6 - Reference Guide

About this guide Conventions used in this guide SharePlex commands SharePlex parameters SharePlex utilities Appendix B: SharePlex environment variables

show read

SharePlex commands > Alphabetical reference for SharePlex commands > show read

Use the show read command to view statistics about the Read process.

Basic Command

The basic show read command shows an overview of the process, such as the data source, whether the process is running or stopped, and other basic information.

Detailed statistics

To view detailed statistics for the Read process, use the show read command with the [detail] option. This option shows detailed statistics that can help you assess the performance of the process, decide whether tuning parameters need to be adjusted, and detect problems or bottlenecks.

Statistic Description
Host The name of the local machine (source system).
Source The name of the source Oracle instance.
Status

The status of the Read process (running or stopped).

Operations forwarded The number of operations that Read sent to the Export queue.
Since The time that Read started.
Total The number of messages in the capture queue that have yet to be read-released. This number corresponds to the 'Number of messages' returned from running qstatus.
Backlog The number of messages that are waiting in the capture queue to be processed by Read.
Last operation forwarded Identifying information about the most recent operation that Read sent to the export queue, or the last operation it sent if Read is inactive. An operation can be data relating to a DML or DDL operation or an internal SharePlex operation.
Read state

The state of the process, in relation to the replication work it performs: It can be one of the following:

  • IDLE: Read is waiting to collect and process the next batch of records from the capture queue. If Read is idle too long, it could mean that Capture is running behind or that it is idle because there is no new data in the capture queue. If that is not the case, and you want to reduce the latency of the Read process, you can adjust the SP_ORD_DELAY_RECORDS parameter to have Read collect and process records faster.
  • PASS1: Read is in the first phase of processing the data and packaging it for routing.
  • PASS2: Read is in its second phase of processing.

The Read State field is useful if Read appears to be taking too long to process an operation.

Activation ID The internal identifying number of the configuration activation, which identifies the associated processes and queues.
Operations forwarded The number of transactional and internal SharePlex operations sent by Read to the export queue since it started.
Transactions forwarded The number of committed transactions sent by Read to the export queue since it started. Comparing this value with the value for the operations forwarded indicates whether the transactions tend to be small or large. You can use that information to determine why Read appears to be falling behind and why the queues are not emptying (large transactions without a COMMIT).
Full rollbacks The number of rolled back transactions processed by Read.
Full rollback operations skipped The number of operations that Read does not forward to the export queue because the transaction was rolled back.
Cursor cache hit count The number of times Read used a cached cursor.
Cursor cache miss count The number of times Read could not use a cached cursor.
Number of open cursors The number of open cursors reserved by Read to access Oracle if necessary.
Number of active batches The number of transactions currently active that are being processed as a batch transaction. If enabled, Read will combine batch operations so that they can be posted more quickly.
Batch message total The number of operations that the Read process combines into batch operations.

Usage

Supported targets: All
Authorization level: Viewer (3)
Issued for: source system
Related commands: show capture, show export, show import, show post

Syntax

Basic command Command options Remote options
show read

[detail] [for datasource]

[ on host |

on host:portnumber |

on login/password@host |

on login/password@host:portnumber ]

Syntax description

Component Description
show read
  • Shows the state of the Read process and a summary of the operations processed.
    • detail

    This option displays detailed statistics for the Read process.

    Example:

    sp_ctrl(sysA)> show read detail

    for datasource

    This option shows Read statistics for a specific datasource.

    datasource is expressed as o.SID, where SID is an ORACLE_SID.

    Example:

    sp_ctrl(sysA)> show read for o.oraA

       

    Remote options

    These options enable you to issue the command on a remote machine and to script commands that include a login name, password, port number, or combination of those items.

    Option Description
    on host

    Execute the command on a remote system (one other than the one where the current sp_ctrl session is running). You are prompted for login credentials for the remote system. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on SysA

    on host:portnumber

    Execute the command on a remote system when a remote login and port number must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on SysA:8304

    on login/password@host

    Execute the command on a remote system when a remote login, password, and host name must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on john/spot5489@SysA

    on login/password@host:portnumber

    Execute the command on a remote system when a remote login, password, host name, and port number must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on john/spot5489@SysA:8304

    show sql

    SharePlex commands > Alphabetical reference for SharePlex commands > show sql

    Use the show sql command to view the SQL statement being written by the Post process to post data to the target database. If the post queue is empty, or if Post is not processing a statement, the show sql command shows the most recent SQL statement processed.

    Use this command when you think replication is taking too long, or when Post stops on an error. Knowing which SQL statement is at fault can help you determine what is wrong and whether or not further action is required.

    The following is an example of the show sql display:

    sp_ctrl (tustin:8852)> show sql

    Last SQL statement of queue tustin and instance o.ora920-0.ora920 on tustin

    insert into “KWONG”.”KCWTAB2” (“C1”,”C2”) values (:V001,:V002)

    Issue this command for the target system.

    Usage

    Supported targets: All
    Authorization level: Viewer (3)
    Issued for: target system
    Related commands: none

    Syntax

    Basic command Command options Remote options
    show sql

    [queue queuename]

    [for datasource-datadest]

    [thread=n]

    [session=n]

    [ on host |

    on host:portnumber |

    on login/password@host |

    on login/password@host:portnumber ]

    Syntax description

    Component Description
    show sql Without options, shows all SQL statements.
    queue queuename

    Use this option to show the SQL statement for a specific named queue.

    • queue is a required part of the syntax.
    • queuename is the name of the queue. If you are unsure what the queue name is, issue the qstatus command.

    Queue names are case-sensitive on all platforms.

    Example:

    sp_ctrl(sysA)> show sql queue q1

    for datasource-datadest

    Use this option to show the SQL for a specific replication stream when you are replicating to or from more than one Oracle instance.

    • for is a required part of the syntax.
    • datasource is expressed as o.SID, where SID is the ORACLE_SID of the source Oracle instance.
    • datadest is expressed as o.SID, where SID is the ORACLE_SID of the target Oracle instance.

    Example:

    sp_ctrl(sysA)> show sql for o.oraA-o.oraB

    thread=n

    Use this option to show the SQL for a post processing thread.

    • thread= is a required part of the syntax.
    • n is a thread number displayed with the show post threads command.

    Leave no spaces between the components. This option can appear in any order with other options.

    Example:

    sp_ctrl(sysB)> show sql thread=1234

    session=n

    Use this option to show the SQL for a user session.

    • session= is a required part of the syntax.

    • n is a session number displayed with the show post threads command. Leave no space between the components. This option can appear in any order with other options.

    Example:

    sp_ctrl(sysB)> show sql session=1234

    Remote options

    These options enable you to issue the command on a remote machine and to script commands that include a login name, password, port number, or combination of those items.

    Option Description
    on host

    Execute the command on a remote system (one other than the one where the current sp_ctrl session is running). You are prompted for login credentials for the remote system. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on SysA

    on host:portnumber

    Execute the command on a remote system when a remote login and port number must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on SysA:8304

    on login/password@host

    Execute the command on a remote system when a remote login, password, and host name must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on john/spot5489@SysA

    on login/password@host:portnumber

    Execute the command on a remote system when a remote login, password, host name, and port number must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on john/spot5489@SysA:8304

    show statusdb

    SharePlex commands > Alphabetical reference for SharePlex commands > show statusdb

    Use the show statusdb command to view the Status Database. Each machine involved in replication has its own Status Database that contains records of key replication events, including those that did not generate an error message or warning at the user interface. This information can alert you to potential problems and help you resolve existing ones.

    The show statusdb display includes the following information:

    • Level: whether the entry is there only for information purposes or whether it is the result of an error or warning condition.
    • Details: the reason for the event.

    When appropriate, the Status Database refers you to the Event Log if there is more information about an entry.

    Usage

    Supported targets: All
    Authorization level: Viewer (3)
    Issued for: source or target system
    Related commands: status, lstatus

    Syntax

    Basic command Command options Remote options
    show statusdb detail

    [ on host |

    on host:portnumber |

    on login/password@host |

    on login/password@host:portnumber ]

    Syntax description

    Component Description
    detail

    This option displays a higher level of detail for the Status Database.

    Example:

    sp_ctrl(sysB)> show statusdb detail

    Remote options

    These options enable you to issue the command on a remote machine and to script commands that include a login name, password, port number, or combination of those items.

    Option Description
    on host

    Execute the command on a remote system (one other than the one where the current sp_ctrl session is running). You are prompted for login credentials for the remote system. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on SysA

    on host:portnumber

    Execute the command on a remote system when a remote login and port number must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on SysA:8304

    on login/password@host

    Execute the command on a remote system when a remote login, password, and host name must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on john/spot5489@SysA

    on login/password@host:portnumber

    Execute the command on a remote system when a remote login, password, host name, and port number must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on john/spot5489@SysA:8304

    show scn

    SharePlex commands > Alphabetical reference for SharePlex commands > show scn

    Use the show scn command to view the Oracle SCN of the last transaction that a Post process applied to the target. The command shows all of the last SCNs when using multiple post queues.

    NOTE: This command stops all Post processes in order to obtain the SCN information.

    sp_ctrl (sysB)> show scn

    Post processes replicating from o.w111a64f

    Queue spxl11, SCN of the last transaction applied: 292767

    Queue eq1, SCN of the last transaction applied: 192563

    Queue pq1, SCN of the last transaction applied: 232686

    Queue pq2, SCN of the last transaction applied: 18995

    Queue pq3, SCN of the last transaction applied: 31032

    Target o.ora112 is consistent with source o.w111a64f at SCN 18995

    Usage

    Supported targets: Oracle
    Authorization level: Viewer (3)
    Issued for: target system
    Related commands:

    activate config

    Syntax

    Basic command Remote options
    show scn

    [ on host |

    on host:portnumber |

    on login/password@host |

    on login/password@host:portnumber ]

    Remote options

    These options enable you to issue the command on a remote machine and to script commands that include a login name, password, port number, or combination of those items.

    Option Description
    on host

    Execute the command on a remote system (one other than the one where the current sp_ctrl session is running). You are prompted for login credentials for the remote system. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on SysA

    on host:portnumber

    Execute the command on a remote system when a remote login and port number must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on SysA:8304

    on login/password@host

    Execute the command on a remote system when a remote login, password, and host name must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on john/spot5489@SysA

    on login/password@host:portnumber

    Execute the command on a remote system when a remote login, password, host name, and port number must be provided. If used, must be the last component of the command syntax.

    Example: sp_ctrl(sysB)>status on john/spot5489@SysA:8304

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